724-01 Signal Cable
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 SECTION 724 - TRAFFIC SIGNALS (Last Revised September , 2022)
724-01 Signal Cable
SCOPE. This specification covers the material requirements for signal cable used in traffic signal systems wiring. Signal cable shall be installed in underground ducts or used as an aerial cable supported by a messenger cable. MATERIAL REQUIREMENTS. Signal cable shall conform to the requirements of the International Municipal Signal Association (IMSA) Specification 20-1. The gauge and number of conductors shall be as specified in the contract doc uments. The conductors shall be stranded copper wire. BASIS OF ACCEPTANCE. Signal cable will be accepted on the basis of a Material Certification that the product conforms to the requirements of this specification.
724-02 Span Wire
SCOPE. This specification covers the material requirements for span wire used in the suspension of traffic signal heads and overhead traffic signal signs. Span wire may be used as a single span wire, dual span wire including a tether wire, messenger wire, or guy wire. MATERIAL REQUIREMENTS. Span wire shall meet the requirements of ASTM B228, Grade 30 EHS. BASIS OF ACCEPTANCE. Span wire will be accepted on the basis of a Material Certification that the product conforms to the requirements of this specification.
724-03 Traffic Signal Poles
SCOPE. This specification covers the material requirements, design criteria, and fabrication details for traffic signal poles used for vehicular and pedestrian traffic signals. Traffic signal poles are classified according to the following applications:
A.Span -Wire Poles. Span -wire poles are used for supporting span wire to which traffic signal heads and overhead signs are attached. Span -wire poles are also referred to as strain poles.
B.Mast -Arm Poles. Mast -arm poles consist of a vertical pole and an approximately horizontal arm to which traffic signal heads and overhead signs are attached. Mast -arm poles may be equipped with more than one mast arm.
C.Post-Top-Mount Poles. Post-top-mount poles are used for mounting t raffic signal heads directly on the top of the pole.
D.Bracket -Mount Poles. Bracket -mount poles are used to support traffic signal heads and other devices bracketed from, or attached to, the side of the pole.
E.Monotube Poles. Monotube poles consist of two vertical poles (one on each side of the intersection) and an approximately horizontal shaft that is connected to the vertical poles. Traffic signal heads and overhead signs are then attached to the horizontal shaft.
724-03 Traffic Signal Poles
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 MATERIAL REQUIREMENTS .
A.General. The following materials shall be used for traffic signal pole fabrication. Span wire, mast arm, and monotube poles shall be galvanized steel. Post -top-mount and bracket -mount poles shall be galvanized steel or aluminum. Acceptable aluminum materials are those contained in the AASHTO Standard Specifications for Structural Supports for Highwa y Signs, Luminaires and Traffic Signals (2013 version). The following are the acceptable steel materials for the traffic signal pole components:
1.Traffic Signal Poles. Traffic Signal Poles shall be made of one of the following:
a.ASTM A500, Grade B, or ASTM A501.
b.ASTM A53, Grade B pipe.
c.ASTM A53, Grade B pipe, with a minimum yield of 48,000 psi guaranteed by the manufacturer and documented by the submission of certified copies of physical tests performed on the lots of material from which the poles were manufactured.
d.ASTM A252, Grade 2 or Grade 3.
e.ASTM A252, Grade 2, with a minimum yield of 48,000 psi guaranteed by the manufacturer and documented by the submission of certified copies of physical tests performed on the lots of material f rom which the poles were manufactured.
f.ASTM A572, Grades 40, 50, 60 or 65.
g.ASTM A595, Grade A.
h.ASTM A618, Grade I, II or III.
i.ASTM A588.
j.ASTM A513, with a minimum yield strength of 36,000 psi guaranteed by the manufacturer and documented by the submission of certified copies of physical tests performed on the lots of material from which the poles were manufactured.
k.ASTM A1008/A1008M Grade 60 Class 2.
l.ASTM A1011/A1011M Grade 60 Class 2.
m.Span wire sleeve shall be of the same material as the main pole.
n.Flange connection for mast arm and monotube poles shall be of compatible material as the horizontal shaft that is of the same strength or stronger.
2.Base Plates. The base plates for traffic signal poles shall be m ade of one of the following:
a.ASTM A27 Grade 65 -35, mild to medium strength carbon steel castings.
724-03 Traffic Signal Poles
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 b. ASTM A36.
c.ASTM A588.
d.ASTM A572, Grade 40, 50, 60 or 65.
e.ASTM A633 (Any Grade).
3.Connection Devices (excluding anchor bolts). All hardware, including thimble eyebolts and circumferential pole clamps, shall meet the requirements of one of the following:
a.ASTM A36.
b.ASTM A588.
c.ASTM F3125, Grade A325.
4.Pole Caps and Anchor Bolt Covers. Pole caps for traffic signal poles shall be galvanized steel, galvanized cast iron, aluminum, or zinc alloy AG40A. Anchor bolt covers (if specified in the contract documents) shall be galvanized steel, galvanized cast iron, or aluminum. DESIGN CRITERIA .
A.General. Traffic signal poles shall be designed in accordance with AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals (2013 version) except as modified herein. The following elements shall be designed for the most critical orientation of the loads applied to a traffic signal pole:
1.All tubular segments of the structure.
2.Hand hole reinforcement and other hole reinforcements.
3.Devices used to connect cable (e.g., span wire and tether wire) to pole.
4.Base plates.
5.Mast arm to pole connections.
6.Multiple mast arms connected to one vertical pole.
7.Horizontal shaft to pole connections of monotube traffic signal pole structure.
8.Centered flange connection(s) of a two or three -section horizontal shaft of monotube traffic signal pole structure
9.All traffic signal pole mounting hardware including anchor bolts, washers, anchor bars, and hex nuts.
10.Span wire steel sleeve (for span wire poles with wall thickness less than 0.25inch).
724-03 Traff Ic Signal Poles
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 The design calculations and working drawings shall be approved, stamped, and signed by a Professional Engineer. All necessary holes in the pole below the load attachment point, and greater than 0.6875 inch in diameter, shall be made by the manufacturer only, and reinforced according to the fabrication details , contract documents, and the New York State Steel Construction Manual.
B.Wind Loads. All traffic signal poles and attachments shall be designed to withstand loads generated from maximum wind speeds below: Nassau and Suffolk Counties – 120 mph Counties in New York City: New York (Manhattan), Kings (Brooklyn), Bronx, Richmond (Staten Island), and Queens – 110 mph All other counties – 90 mph Wind Importance factors shall be based on a 50 -year minimum design life.
C.Welds. All welded connectio ns shall be as specified per AASHTO (2013).
D.Span -Wire Poles. Cross -sectional shape of span wire poles shall be round or multi -sided (minimum six-sides).
1.Design Load. The design load and allowable stresses for span -wire poles shall be in accordance with AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals (2013 version) and applied at a point 18 inches from the top of the pole. Minimum span wire sag of 5% of span length under dead loads shall be assumed. Span wire structures shall be analyzed as rigid supports using the simplified method outlined by AASHTO and considering the following deflection limits:
a.Maximum Deflection - Shall be computed at a point 18 inches from the top of the pole.
b.Deflection limits shall be as defined in AASHTO (2013) Section 10.4.2.1. Span wire poles shall be raked during construction and shall be plumb after all loads are applied. The shop drawings shall indicate the required footing capacity for the pole desi gn load as well as the pole material’s yield and ultimate stresses.
2.Dimensions. Span -wire poles shall conform to the following requirements:
a.Minimum Wall Thickness - Shall be 0.125 inch.
b.Maximum Pole Diameter at the Base – Shall be 24 inches.
3.Span -Wire Connecting Hardware. For tapered multi -sided poles or fluted poles, the connecting hardware shall be a galvanized thimble eyebolt or a circumferential pole clamp. For round poles, the connecting hardware shall be thimble eyebolt only. The design strength shall be 70% of yield strength of the connecting device. The yield strength of the connecting device shall be determined using a cable load aligned 85 degrees to the vertical axis of the pole. A span wire steel sleeve shall be welded to the span wire pole (in the area where thimble eyebolt will be located) prior to drilling the hole for the thimble eyebolt if the pole’s wall thickness is less than 0.25 inch.
724-03 Traffic Signal Poles
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 E. Mast -Arm Poles. Cross -sectional shape of both vertical pole and horizontal arm (mast arm) shall be round, fluted, or multi -sided (minimum six sides) and shall have the same cross -sectional shape.
1.Design Loads. Each part of the mast arm pole structure shall be designed for the combination of loads producing the maximum effect using unit stresses increased for the material and group loads as described in AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals (2013 version). The vertical supports for mast arm poles shall be analyzed as rigid supports using the simplified method outlined by AASHTO 2013. The fatigue category shall be chosen based on the length of the arm and the posted speed of the roadway as shown in the table below. The highest posted speed among all the roadways meeting at an intersection shall be considered for all mast arms at that intersection. FATIGUE CATEGORY FOR MAST ARM STRUCTURES ARM LENGTH SPEED LIMIT ≤40 MPH ≥45 MPH ≤50' III II 51' – 65’ II I For all fatigue categories, the mast arm pole design shall include only Natural Wind Gusts. Truck -induced gusts, Vortex shedding, and Galloping need not be considered. Minimum design life of Traffic Signal Structures shall be 50 years. Deflect ion limits of the vertical support shall be as defined in AASHTO (2013), Section 10.4.2.1. Maximum deflection at the end of the mast arm after all the dead loads are applied shall be 0.5 in/ft of arm length. Mast arm shall be cambered such that the perma nent camber after all dead loads are applied is a minimum of L/1000 above the horizontal plane, where L is the length of the mast arm in feet. The shop drawings shall indicate the required footing capacity for the pole design load as well as the pole mater ial’s yield and ultimate stresses.
2.Mast -Arm Section. Mast arms shall be continuously tapered from pole connection to the tip.
3.Mast -Arm to Pole Connection. The mast arm shall be secured to the pole by at least four bolts. The mast arm shall be equipped with a flange plate. The flange plate shall be attached to the pole through the use of the connection details in the Fatigue Design section of AASHTO (2013). Flange plates on poles and mast arms shall have a de -burred hole with a smooth cable guid e for wiring.
4.Dimensions. Mast arms and poles shall conform to the following requirements:
a.Minimum Wall Thickness – 0.125 inch.
b.Maximum Diameter at base of pole or arm:
1.Pole – 24 inches.
2.Mast Arm – 0.5 inch per foot of length.
c.Maximum length of mast arm shall be sixty -five (65) feet.
724-03 Traffic Signal Poles
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 5. Poles with Multiple Mast Arms. Poles with multiple mast arms shall be designed and constructed in accordance with the mast -arm configuration in the contract do cuments.
F.Post-Top-Mount and Bracket -Mount Poles . Cross -sectional shape of poles shall be round or fluted.
1.Design Loads. These traffic signal poles shall be designed for the combination of loads producing the maximum effect using unit stresses increased as indicated for the material and group loads as described in AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals (2013 version) . If these poles are not protected by a guiderail and are constructed of galvanized steel, then they shall be designed for installation with breakaway transformer bases.
2.Dimensions. These poles shall conform to the following requirements:
a.Minimum Wall Thickness - 0.125 inch.
b.Maximum Diameter at base of pole:
1.Pole - 0.7 inch per foot of length.
G.Monotube Poles. Cross -sectional shape of both vertical pole and horizontal shaft shall be round, fluted, or multi -sided (minimum six sides) and shall have the same cross -sectio nal shape.
1.Design Loads. Each part of the monotube pole structure shall be designed for the combination of loads producing the maximum effect using unit stresses increased for the material and group loads as described in AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals (2013 version). Deflection limits of the vertical support shall be as defined in AASHTO (2013), Section 10.4.2.1. Maximum deflection of the horizontal shaft after all the dead loads are applied shall be 0.25 inch per foot of entire length.
2.Horizontal Shaft. Shall have a maximum of three sections and all sections shall be un -tapered.
3.Horizontal Shaft to Pole Connections. The horizontal shaft shall be secured to the vertical poles by at least four bolts at each end of horizontal shaft. The horizontal shaft shall be equipped with a flange plate on each end of shaft with vertical and horizontal gusset plates (top and bottom and at each side) welded to the butt en ds of the horizontal shaft. A mating flange plate shall be attached to the poles using vertical and horizontal gusset plates (top and bottom and at each side). Flange plates shall have a de -burred hole with a cable guide for wiring.
4.Horizontal Shaft Center Connection(s). Any horizontal shaft center connection shall be a flange type connection and secured by at least four bolts. Each flange shall have four equally spaced gusset plates. Flange plates shall have a de -burred hole with a c able guide for wiring. Alternative center connection designs shall be pre -approved by the Engineer before manufacture .
5.Dimensions. Horizontal shafts and poles shall conform to the following requirements:
a.Minimum Wall Thickness – 0.125 inch.
b.Maximum Diameter at base of pole or horizontal shaft :
1.Pole – 24 inches.
724-03 Traffic Signal Poles
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4
2.Horizontal Shaft - 0.5 inch per foot of length. FABRICATION DETAILS
A.Welding. All welding shall be performed by certified welders and in accordance with the New York State Steel Construction Manual. Field welding shall be at a minimum. Galvanizing of poles shall be performed after all welding is completed.
B.Base Plates and Hardware. The traffic signal pole base plate shall be welded to the pole by the pole manu facturer in accordance with the pole fabrication details, contract documents, and the New York State Steel Construction Manual. Base plates shall be galvanized (after being welded to pole) in accordance with §719 -01 Galvanized Coatings and Repair Method, Type I. Flange plates on horizontal shafts shall be circular on the outside and shall have a de-burred hole with a smooth cable guide for wiring. The horizontal shaft for a monotube pole structure may be constructed in one, two or three sections. For two sections the flanged connection shall be located at the center of the span. For three sections the two flanged connections shall be located at the one -third points from the ends.
C.Traffic Signal Poles. Finished traffic signal poles sh all be galvanized in accordance with §719 -01 Galvanized Coatings and Repair Methods, Type I. All traffic signal poles, excluding those intended for breakaway transformer base mounting (i.e., post-top-mount or bracket -mount poles), shall be equipped with hand holes. Hand holes shall be centered approximately 2 feet above the base plate end of the pole. The maximum hand hole size shall not exceed 4 inches by 6.5 inches. Poles shall be equipped with a grounding terminal accessible through the hand hole. Holes for wiring fittings shall consist of a pipe coupling of the diameter specified in the contract documents and shall be shop installed when possible. Hand holes and holes for wiring fittings located near the base of the pole sha ll be reinforced with steel at least equal in area to the steel removed from the pole for the fabrication of the hole. All holes shall be de -burred before starting the galvanizing process. A steel sleeve is required at the location of the thimble eyebolt f or span wire pole when the span wire pole wall thickness at that location is less than 0.25 inches. In such a case the steel sleeve shall be welded to the span wire pole, centered in the area where thimble eyebolt will be located, prior to drilling the hol e for the thimble eyebolt. Traffic signal poles shall be fabricated in any of the following shapes and styles:
1.Round, Continuously Tapered Construction. Poles shall be fabricated with one longitudinal seam only which shall be continuously welded and ground or rolled flush. Poles shall have a uniform wall thickness and shall taper uniformly starting at the butt end and decreasing in diameter at a rate between 0.25 and 0.5 inch per three feet of length.
2.Round, Step -Tapered Construction. (Applica ble only to span wire poles) Poles shall be fabricated from round pipe sections with one longitudinal seam only. Poles shall be joined by a hot- swaged shrink fit and continuously seal welded to prevent entrance of water. Starting at the butt end, poles sha ll achieve a tapered effect of 0.25 to 0.5 inch per 3 feet of length by use of decreasing diameter, round -pipe sections of uniform wall thickness and shall be concentric in relation to one another.
724-03 Traffic Signal Poles
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 3. Multi -sided, Continuously Tapered Construction. The multi -sided pole shall conform to the requirements set forth above under Round, Continuously Tapered Construction except that it shall have no more than 2 longitudinal seams which shall be continuously welded and ground or rolled flush. Poles with 5 sides or less shall not be allowed.
4.Round, Un-tapered Construction. Span wire poles, all sections of monotube pole structures and vertical portion of mast arm poles may be round un -tapered with one longitudinal seam only and have uniform wall thickness which shall be continuously welded and ground or rolled flush. When un-tapered, vortex shedding shall be considered where applicable.
5.Fluted Construction. Poles of fluted construction shall be round (tapered or un-tapered) and shall have a uniform wall thickness with up to two longitudinal seams which shall be continuously welded and ground or rolled flush. Span wire poles shall be of the same type and style at a n ew or rebuilt signalized intersection.
D.Mast Arms and Horizontal Shafts of Monotube Poles. Horizontal mast arms shall be continuously tapered starting at the pole connection and decreasing in diameter at a rate between 0.25 and 0.5 inch per three feet of length. All vertical and horizontal members of the monotube pole structure shall be un-tapered.
E.Pole Marking .
1.Span -Wire Poles. The following information shall be stamped on the top of the base plate or ground sleeve with at least 0.5-inch tall letters to such a depth as to be clearly visible after galvanizing: Desired Information Example Manufacturers Name or Logo - Month and Year of Manufacture 1109 D# Contract D254321 Design Load 8000 lb Overall Height 28 ft
2.Vertical Mast -Arm Poles and Monotube Poles. The following information shall be stamped on the top of the base plate or ground sleeve with at least 0.5 -inch tall letters to such a depth as to be clearly visible after galvani zing. Desired Information Example Manufacturers Name or Logo - Month and Year of manufacture 1009 D# Contract D254321 Minimum Yield Strength 55 ksi
3.Horizontal Mast -Arms and Shaft of Monotube Poles. The following information shall be stamped on the mast arm or horizontal shaft of monotube pole structure with at least 0.5 -inch tall letters to such a depth as to be clearly visible after galvanizing. Desired Information Example Manufacturers Name or Logo - Month and Year of Manufacture 1009
724-04 Vehicular and Pedestrian Traffic Signal Heads
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 D# Contract D254321 Minimum Yield Strength 50 ksi BASIS OF ACCEPTANCE. Acceptance of all Traffic Signal Poles covered by this specification shall be based on the following:
A.Submission of fabrication details and design calculations for each pole, intended for a worst -case configuration of the loads, as specified in the contract documents, signed and sealed by a Professional Engineer licensed and registered to practice in New York State.
B.Submission of the manufacturer's certificate of compliance with these specification requirements and the approved fabrication details.
C.In addition, for all span wire, mast arm and monotube poles, mill certification of all structural materials (includi ng anchor bolts) shall be submitted to the Engineer. A Material Certification shall be provided for every traffic signal pole that it conforms to this specification. Pole dimensions (i.e.: mast arm length and mounting height, span wire pole height, etc.) shall be confirmed and calculations and shop drawings approved before traffic signal pole orders are placed.
724-04 Vehicular and Pedestrian Traffic Signal Heads
SCOPE. This specification covers the material requirements, design criteria, and fabrication details for Vehicular and Pedestrian Traffic Signal Heads consisting of one or more traffic signal sections. A Standard Traffic Signal Section is a complete unit for illuminating one lens and consists of a housing, lens, reflector, and lamp rec eptacle (Type I traffic signal section does not have a lens, reflector, or lamp receptacle). Vehicular and Pedestrian Traffic Signal Heads shall be made of Aluminum or Polycarbonate material. The following types of vehicular and pedestrian traffic signal heads are currently available:
A.Aluminum Vehicular Traffic Signal Head. Manufactured in die cast aluminum material and available in sizes that accept standard size vehicular traffic signal indications.
B.Polycarbonate Vehicular Traffic Signal Head. Manufactured in polycarbonate material and available in sizes that accept standard size vehicular traffic signal indications.
C.Aluminum Pedestrian Traffic Signal Head. Manufactured in die cast aluminum material and available in sizes that a ccept standard size pedestrian traffic signal indications.
D.Polycarbonate Pedestrian Traffic Signal Head. Manufactured in polycarbonate material and available in sizes that accept standard size pedestrian traffic signal indications. MATERIAL REQUIREMENTS. Vehicular and pedestrian traffic signal heads are manufactured using die cast aluminum or polycarbonate materials. Multi -section traffic signal heads shall be constructed of traffic signal sections of the same type of material (eithe r aluminum or polycarbonate) – there shall be no mixing of material types within the same traffic signal head. The following shall be used for vehicular and pedestrian traffic signal head fabrication:
A.Aluminum . All aluminum vehicular and pedestrian tra ffic signal heads shall be die -cast of aluminum in accordance with the requirements of ASTM B85, Alloy A360, A380, or A413.
724-04 Vehicular and Pedestrian Traffic Signal Heads
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 B. Polycarbonate. All polycarbonate vehicular and pedestrian traffic signal heads shall be made of injection -molded, ultraviolet resistant, heat stabilized, flame retardant polycarbonate resin, capable of withstanding a 70ft-lb impact without fracture or permanent deformation, and shall be resistant to heat. The temperature rating for polycarbonate traf fic signal heads shall be -35 to 165 °F.
C.Wiring. All wiring shall consist of No. 14 AWG or larger stranded copper wire with thermoplastic insulation and a 600 -volt rating. DESIGN CRITERIA .
A.Wind Loads. All traffic signal heads, mounting brackets, attachments and fittings shall be designed for a wind load generated from maximum wind speeds below:
1.Nassau and Suffolk Counties – 120 mph
2.Counties in New York City: New York (Manhattan), Kings (Brooklyn), Bronx, Richmond (Staten Island), and Queens – 110 mph
3.All other counties – 90 mph
B.Snow and Ice Load. All traffic signal heads, mounting brackets, attachments and fittings shall be designed for snow and ice load pressure depending on geographic location of installation.
C.Electrical Characteristics. All traffic signal heads shall be designed for operation on 115 volts ±30 volts, 60 Hertz, single phase AC power unless otherwise indicated.
1.Aluminum Vehicular Traffic Signal Heads
a.Traffic Signal Sectio n. The traffic signal section wall thickness shall be 0.0625 inch (minimum). Each traffic signal section shall be arranged with openings in the top and bottom, so that it may be rotated about a vertical axis between waterproof supporting brackets or trunnion s and shall be capable of being securely fastened at increments of not more than 7 degrees of rotation. The top and bottom of each traffic signal section shall have integrally cast locking rings or other provisions to provide positive interlocking and inde xing. The top and bottom of each traffic signal section shall be provided with tees or crosses equipped with pipe- plug knobs or caps which can be removed to assist in wiring. Flat arms or spiders will be accepted as an alternative for use on the bottom of adjustable traffic signals. Each traffic signal section shall be designed so that additional sections may be added. The construction shall permit the assembly of different size traffic signal sections of the same manufacturer. The construction shall permit joining smaller size traffic signal sections either above or below larger size traffic signal sections. All traffic signal sections shall be rigidly and securely fastened together into one unitized, weather -resistant traffic signal face. An adju stable traffic signal head shall consist of two or more traffic signal faces fastened to, and supported by, a pipe assembly and suitable entrance fitting.
b.Doors . The traffic signal section door shall be provided with four visor mounting holes located equidistant about the lens opening to allow the mounting of the visor in either a vertical or horizontal position. The holes shall be drilled and tapped and provided with stainless steel mounting screws. Neoprene gasketing shall be provided between the body of the traffic signal section and the door. The door shall be suitably hinged and shall be forced tightly against the
724-04 Vehicular and Pedestri An Traffic Signal Heads
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 gasket and the housing by simple stainless -steel locking devices. All other exterior hardware such as hinge pins, lens clips, et c., shall be of stainless steel. The locking device shall be capable of being operated without the use of tools. Hinges shall be arranged to allow convenient relamping. On the outside of the door, there shall be a rim encircling the lens opening to prevent any light leakage between optical systems.
c.Visors. The traffic signal section visor shall be separate and removable from the door. The visor shall be held in place by stainless steel fastenings attached to the door in such a manner as to preven t the possibility of any light leakage between the door and visor which might be discernible from the side. Traffic signal section visors shall be of sheet aluminum, at least 0.050 inches thick, and shall mount to the traffic signal head with four slotted mounting tabs which align with the mounting screws on the housing door. Unless otherwise specified in the contract documents, all traffic signal heads shall be provided with cap -type visors. The underside of visors and the entire surface of louvers or fins used in front of traffic signal lenses shall be painted a flat black to minimize light reflection to the sides of the traffic signal heads. Visors shall tilt down from the horizontal a minimum of 3.5 degrees and shall be at least 9.5 inches in length for larger diameter lenses and 7 inches in length for smaller diameter lenses.
d.Terminal Block. Each traffic signal face shall be equipped with a 5 -point heat -resistant terminal block. The terminal block shall have five terminals with connectors for recepta cle leads and screw terminals for field wires. The individual terminal blocks in the separate traffic signal faces of a traffic signal head shall be interconnected. In one face of each multi -face traffic signal head there shall be an additional 9 - position terminal block to which all field wires are connected. All socket leads of all traffic signal faces shall terminate at this 9 -position terminal block.
e.Dust -Tight Optical System. The dust -tight optical system shall be properly gasketed to exclu de dust and dirt from the reflecting surface of the reflector and the inner surface of the lens. Gaskets shall be placed between the reflector and supporting member, and between the reflector holder and the inner surface of the lens. This system applies to incandescent lamps only.
2.Polycarbonate Vehicular Traffic Signal Heads
a.Traffic Signal Section. The traffic signal section shall have a wall thickness of 0.100 inch (minimum). The housing and door shall be one-piece construction. All traffic signal sections are to be designed in the same manner. When using different sized traffic signal sections in combination, all traffic signal sections shall match each other. The top and bottom opening of each traffic signal section shall have integral, serrated bosses that will provide positive positioning of the traffic signal head to eliminate undesirable rotation or misalignment of the traffic signal head between traffic signal sections. Each opening accommodates standard 1.5 -inch diameter pipe fittings and brackets.
b.Doors. Doors shall be hinged by two lugs and mounted to the housing using stainless steel pins. The door of each traffic signal section shall be one piece with a minimum thickness of 0.0625 inch. A neoprene gasket shall be provided between the body of the traffic signal section and the door. The doors shall be forced tightly against the gasket and traffic signal section by simple stainless - steel locking devices. A slotted, air -cored, neoprene lens gasket sha ll provide a positive seal between the lens and the traffic signal door and between the lens and the reflector holder.
724-04 Vehicular and Pedestrian Traffic Signal Heads
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 The gasket shall be an unbroken circular gasket with a "U" shaped cross section. The gasket and lens shall be held tightly into the door by four stainless steel clips and screws that shall allow easy removal of the lens and gasket from the door without removal of the door in the field.
c.Visors. Visor shall be one piece with a minimum thickness of 0.0625 inch. The rear edge of the visor shall be provided with four mounting lugs for attaching the visor to the door. The inside of the visor shall be dull black in color. All traffic signal heads shall be provided with cap-type visors unless otherwise directed.
d.Terminal Block . Each t raffic signal face shall be equipped with a five -point heat -resistant terminal block. The terminal block shall have five terminals with connectors for receptacle leads and screw terminals for field wires. The individual terminal blocks in the separate traf fic signal faces of a traffic signal head shall be interconnected. In one face of each multi -face traffic signal head, there shall be an additional 9- position terminal block to which all field wires are connected. All socket leads of all traffic signal faces shall terminate at this 9 -position terminal block.
e.Dust -Tight Optical System. The optical system shall be properly gasketed to exclude dust and dirt from the reflecting surface of the reflector and the inner surface of the lens. Gaskets shall be placed between the reflector and supporting member and between the reflector holder and the inner surface of the lens. This system applies to incandescent lamps only.
3.Aluminum Pedestrian Traffic Signal Heads. In addition to applicable items in ALUMINUM VEHICULAR TRAFFIC SIGNAL HEADS , the following requirements apply to Aluminum Pedestrian Traffic Signal Heads: Pedestrian traffic signal construction and indications shall conform to the requirements of “Pedestrian Traffic Control Signal Indications” published by the Institute of Transportation Engineers, with the following modifications:
a.Unless otherwise specified, the head shall be a two -section unit.
b.Traffic signal sections are available in two sizes to accept a 12 -inch s quare LED module or a 16-inch x 18 -inch LED module.
c.Traffic signal heads shall be supplied with No. 14 AWG, or larger, color coded wiring harness and a four -position, barrier -type terminal block.
4.Polycarbonate Pedestrian Traffic Signal Heads. In addition to applicable items in POLYCARBONATE VEHICULAR TRAFFIC SIGNAL HEADS , the following requirements apply to Polycarbonate Pedestrian Traffic Signal Heads: Pedestrian traffic signal construction and indications shall conform to the requirements of “Pedestrian Traffic Control Signal Indications” published by the Institute of Transportation Engineers, with the following modifications:
a.Unless otherwise specified, the head shall be a two -section unit.
b.Traffic signal sections are available in two sizes to accept a 12 -inch square LED module or a 16-inch x 18 -inch LED module.
724-04 Vehicular and Pedestrian Traffic Signal Heads
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 c. Traffic signal head shall be supplied with No. 14 AWG, or larger, color coded wiring harness, and a four - position, barrier -type terminal block. FABRICATION DETAILS .
A.Powder Coating.
1.Coating Powder. All aluminum traffic signal heads, visors and metallic mounting attachments shall be coated with a thermosetting, super durable polyester coating powder formulated for use over aluminum surfaces for high performance in the harsh exterior exposures of New York State. The powder coating film shall possess the following properties: Property Value Film Thickness 3-4 mils Outdoor Weatherability Excellent (>1,000 hrs ASTM B117 Salt Fog). UV Resistance Excellent Pencil Hardness HB-2H, ASTM D3363 Direct Impact Resistance 80-160 in -lb Adhesion 5A/5B, ASTM D3359 Color (Outside Surfaces of Signal Head) Dark Green (Fed. Color. No. 595A, Color 14056) Color (Inside of visor) Black Gloss Satin or Gloss
2.Pretreatment of Aluminum Surfaces . All exterior and interior surfaces of the aluminum signal head, visors and metallic mounting attachments shall be prepared for powder coating using a non - chrome conversion coating. It shall be either a reactive or dried -in-place chrome -free coating to be used as a pre-treatment.
3.Pretreatment Process . The aluminum surfaces shall be subjected to a thorough cleaning process and a non -chrome conversion coating shall then be applied. Rinse stages shall be employed as necessary to remove residual chemicals and contamination. A multi -stage system shall be employed to perform cleaning, rinsing, conversion coating, and passivating rinse/finish individually. No less than three (3) stages shall be emplo yed.
4.Passivating Final Rinse . A passivating final rinse shall be applied. The conversion coating and passivating final rinse shall be specifically formulated for use on aluminum surfaces. They shall prevent corrosion of the aluminum, promote adhesion and be compatible with the chosen coating powder.
5.Powder Application . The coating powder shall be applied to a dry surface. Any remaining rinse water shall be allowed to dry or forced dry prior to powder coating. If forced drying is employed the component shall be allowed to cool down to a temperature dictated by the powder manufacturer that will not cause issues with the powder coating. The powder shall be applied electrostatically. Compressed air used for coating shall be supplied at the prop er dew point and free of oil, rust or other microscopic contaminants.
6.Curing . The powder coating shall then be cured in an oven. The metal temperature and dwell time required for proper cure of the coating shall be as recommended by the coating powder manufacturer and shall be strictly complied with.
B.Latching Devices . All stainless -steel latching devices shall not be painted.
724-05 Traffic Signal Led Indications
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 BASIS OF ACCEPTANCE. Vehicular and Pedestrian Traffic Signal Heads will be accepted on the basis of a Material Certif ication that specifies that the product conforms to the requirements of this specification.
724-05 Traffic Signal Led Indications
SCOPE. This specification covers the material requirements for LED indications used in vehicular and pedestrian traffic signal heads.
A.General. Ball and Single Arrow LED indications in these specifications are described as NYSDOT Standard or Type “A” indications. NYSDOT Standard LED indications are compatible with model 215 current monitors, whereas NYSDOT Type “ A” LED indications are not compatible with model 215 current monitors. Pedestrian LED indications and Bi -Modal Arrow LED indications are described as NYSDOT Type “A” only. Pedestrian LED indications manufactured for NYSDOT can be used with NYS specified ca binets that have or do not have a model 215 current monitor. All LED indications shall be designed, built, and tested per Institute of Transportation Engineers (ITE) performance specifications titled “Vehicle Traffic Control Signal Heads: Light Emitting Di ode (LED) Circular Signal Supplement” and “Pedestrian Traffic Control Signal Indicators – Light Emitting Diode (LED) Signal Modules.” MATERIAL REQUIREMENTS. The material requirements for all traffic signal LED indications covered under this specification shall conform to the ITE specifications mentioned above. Refer to NYSDOT Transportation Management Equipment Specifications (TMES) Chapter 17 for detailed traffic signal LED indication specifications. BASIS OF APPROVAL. Manufacturers or mate rial suppliers desiring to have products considered for inclusion on the Qualified Product List (QPL) shall submit samples of the product, together with an operation and maintenance manual for each manufacturing or supply location, to the Traffic Signal Laboratory, 16 Avis Drive, Latham, New York 12110. Refer to Chapter 1 of the NYSDOT Transportation Management Equipment Specifications (TMES) for instructions. The Department will test the submitted samples in accordance with these specifications and Departm ent instructions. The review process requires a minimum of 180 calendar days. Test procedures are available from the Traffic Signal Laboratory upon request. Upon approval, the name of the manufacturer and the product will be placed on the Qualified Product List (QPL). BASIS OF ACCEPTANCE. Traffic Signal LED indications will be accepted on the basis of the product’s part number and manufacturer’s name appearing on the Qualified Product List (QPL) and a Material Certification that the product is the same as the one appearing on the Qualified (QPL) Product List and that it conforms to the requirements of this specification. NYSDOT requires a test report (for each lot produced by the manufacturer) from the private testing facility that performs the QA sample testing. NYSDOT Traffic Signal Lab will provide the QA sample testing procedure to the testing facility.
724-06 Traffic Signal Heads With Optically Programmed Indications
SCOPE. This specification covers the material requirements, design criteria, and fabrication details for traffic signal heads with optically programmed indications. Traffic signal heads with optically programmed indications shall permit the visibility zone of the indication to be determined optically. The projected indication may be selectively visible or veiled anywhere within 15 degrees of the optical axis. No indication shall result from external illumination nor shall one light unit illuminate a second. This assembly shall include incandescent lamps or LED indica tions.
724-06 Traffic Signal Heads With Optically Programmed Indications
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 MATERIAL REQUIREMENTS. Hinge and latch pins shall be stainless steel. All access openings shall be sealed with weather -resistant rubber gaskets. The temperature rating for traffic signal heads with optically programmed indications shall be -35 to 1 65 °F. The following materials shall be used for fabrication of traffic signal heads with optically programed indications:
A.Aluminum . All aluminum traffic signal heads with optically programmed indications shall be die cast of aluminum in accordance with the requirements of ASTM B85, Alloy A360, A380, or AA13.
B.Wiring. All wiring shall consist of No. 14 AWG or larger stranded copper wire with thermoplastic insulation and a 600 -volt rating. DESIGN CRITERIA .
A.Wind Loads. Traffic signal heads, mounting brackets, attachments and fittings shall be designed for a wind load pressure generated from maximum wind speeds below:
1.Nassau and Suffolk Counties – 120 mph
2.Counties in New York City: New York (Manhattan), Kings (Br ooklyn), Bronx, Richmond (Staten Island), and Queens – 110 mph
3.All other counties – 90 mph
B.Snow and Ice Load. Traffic signal heads, mounting brackets, attachments and fittings shall be designed for snow and ice load pressure depending on geographic location of installation.
C.Electrical Characteristics. All equipment shall be designed for operation on 115 volts ±30 volts, 60 Hertz, single phase AC power unless otherwise indicated.
1.Aluminum Traffic Signal Section . The traffic signal section and lens holder shall be predrilled for backplates and visors. A traffic signal section face shall be of unitized sectional construction. The traffic signal section wall thickness shall be 0.0625 inch (minimum). Each traffic signal section housing shall be die -cast with reinforcing ribs on all sides for extra structural rigidity. Each traffic signal section shall be arranged with openings in the top and bottom so that it may be rotated about a vertical axis between waterproof supporting brac kets or trunnions and shall be capable of being securely fastened at increments of not more than 7 degrees of rotation. The top and bottom of each traffic signal section shall have integrally cast locking rings or other provisions to provide positive interlocking and indexing. The top and bottom of each traffic signal section shall be provided with tees or crosses equipped with pipe -plug knobs or caps which can be removed to assist in wiring. Flat arms or spiders will be accepted as an alternative for use on the bottom of adjustable signals. Each traffic signal section shall be so designed that additional sections may be added (3 sections maximum). All traffic signal sections shall be rigidly and securely fastened together into one weath er-resistant traffic signal face. An adjustable traffic signal head shall consist of two or more traffic signal faces fastened to, and supported by, a pipe assembly and suitable entrance fitting.
a.Doors . The traffic signal section front door shall be provided with four visor mounting holes located equidistant about the lens opening to allow the mounting of the visor in either a vertical or horizontal position. The holes shall be drilled and tapped and prov ided with stainless steel mounting screws. Neoprene gasketing shall be provided between the body of the traffic signal section and the front and rear doors. The doors shall be suitably hinged and shall be forced tightly against the gasket and the housing b y simple stainless -steel locking devices. All other
724-06 Traffic Signal Heads With Optically Programmed Indications
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 exterior hardware such as hinge pins, lens clips, etc. shall be of stainless steel. The locking device shall be capable of being operated without the use of tools. Hinges shall be arranged to allow conven ient relamping. On the outside of the front door, there shall be a rim encircling the lens opening to prevent any light leakage between optical systems.
b.Visors. The traffic signal section visor shall be separate and removable from the front door. The visor shall be held in place by stainless steel fastenings attached to the door in such a manner as to prevent the possibility of any light leakage between the door and visor which might be discernible from the side. Visors shall be of sheet aluminum, at least 0.050 inches, and shall mount to the traffic signal head with four slotted mounting tabs which align with the mounting screws on the housing door. Unless otherwise specified in the contract documents, all traffic signal heads shall be provided with cap -type visors. The underside of visors shall be painted a flat black to minimize light reflection to the sides of the traffic signals. Visors shall tilt down from the horizontal a minimum of 3.5 degrees and shall be at least 9.5 inches in l ength for large diameter lenses and 7 inches in length for small diameter lenses.
c.Terminal Blocks. Each signal section shall have a 5 -position barrier block with 15 quick disconnect terminals for easy socket lead assembly and 5 screw clamp terminals for field wiring.
2.Optical System . The optical system shall accommodate projection of diverse selected indicia to separate portions of the roadway such that only one indication will be simultaneously apparent to any viewer. The projected indic ation shall conform to ITE transmittance and chromaticity standards. The optical system shall be properly gasketed to exclude dust and dirt from the reflecting surface of the reflector and the inner surface of the lens. Gaskets shall be placed between the reflector and supporting member and between the reflector holder and the inner surface of the lens. The following components shall comprise the optical system:
a.Lamp and Lamp Collar. The lamp shall be nominal 150-watt, 115-volt AC, Par-56, three prong, sealed beam having an integral reflector with stippled cover and an average rated life of at least 6000 hours. The lamp shall be coupled to the diffusing element with a collar including a specular inner surface. The signal section shall also be capable of accepting 12” LED indications if incandescent lamps are not requested.
b.Optical Limiter -Diffuser. The diffusing element may be discrete or integral with the convex surface of the optical limiter. The optical limiter shall provid e an accessible imaging surface at focus on the optical axis for objects 900 to 1200 feet distant and permit an effective veiling mask to be variously applied as determined by the desired visibility zone. The optical limiter shall be provided with positive indexing means and composed of heat resistant glass.
c.Objective Lens. The objective lens shall be a high resolution, planar, incremental lens hermetically sealed within a flat laminate of weather -resistant acrylic or approved equal. The lens shall be symmetrical in outline and may be rotated to any 90-degree orientation about the optical axis without displacing the primary image. Colored lenses shall be bonded to Fresnel optical lens for programmability. Each lens is sealed to the door by a specially e xtruded EPDM gasket. The lens shall be held in place by four stainless lens clips and four stainless steel screws to create a moisture and dust proof seal.
3.Assembly. The traffic signal head shall mount to standard 1.5-inch fittings as a single traffic section, as a multiple section face, or in combination with other traffic signals heads. The traffic signal section shall be provided with an adjustable connection that permits 2 -degree incremental
724-06 Traffic Signal Heads With Optically Programmed Indications
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 tilting from 0 to 10 degrees above or below the ho rizontal axis while maintaining a common vertical axis through couplers and mounting. Terminal connection shall permit external adjustment about the mounting axis in 5 -degree increments. The traffic signal head shall be constructed such that it can be installed with ordinary tools and serviced with no tools. Attachments such as visors, backplates, and adapters shall conform and readily fasten to existing mounting surfaces without affecting weatherproof ability and light integrity of the traffic signal head. The traffic signal head shall be arranged for rigid mounting to a mast arm, monotube traffic signal pole structure, or a dual span-wire assembly. It is important for proper operation of the traffic signal head that it be mounted as rigidly as practical to maintain its optical orientation with the roadway. In cases where span wires are used, it should be securely fastened to the lower span (or tether) wire.
4.Electrical. The lamp fixture shall comprise a separately accessible housing (rear door of traffic signal section) and integral lamp support, indexed ceramic socket, and self -aligning, quick -release lamp retainer. Electrical connection between the case and lamp housing shall be accomplished with an interlock assembly which disconne cts the lamp housing when opened. Each traffic signal section shall include a covered terminal block for clip or screw attachment of field wires. Concealed No.14 AWG or larger stranded and coded copper wires shall interconnect all sections to permit field connection within any section.
5.Photo Controls. Each traffic signal section shall include integral means for regulating its intensity between limits as a function of individual background illumination. Lamp intensity shall be at least 97% of uncontrolled intensity at 1,000 fc and shall reduce to 1.4 fc ±2% of maximum at less than 1 fc over the applied voltage and ambient temperature range. Response shall be proportional and essentially instantaneous to any detectable increase from darkness to 1,000 fc and damped for any decrease from 1,000 fc. The intensity controller shall comprise an integrated directional -light sensing and regulating device interposed between lamp and field wires. The device shall be responsive over an applied voltage of 95 to 130 VAC, 60 Hz, temperature range of -35 to 165 °F, may provide phase - controlled output voltage, and shall have a nominal open -circuit terminal impedance of 1,500 ohms. The Photo Control shall not produce sufficient electrical noise or interference t o adversely affect the operation of solid -state electronic equipment used on traffic signal controllers and associated auxiliary equipment. The Photo Control shall not cause false tripping of conflict monitors. FABRICATION DETAILS
A.Powder Coating
1.Coating Powder. All aluminum traffic signal heads, visors and metallic mounting attachments shall be coated with a thermosetting, super durable polyester coating powder formulated for use over aluminum surfaces for high performance in the harsh exterior exp osures of New York State. The powder coating film shall possess the following properties: Property Value Film Thickness 3-4 mils Outdoor Weatherability Excellent (>1,000 hrs ASTM B117 Salt Fog). UV Resistance Excellent
724-07 Traffic Signal Head Mounting Hardware and Backplates
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 Pencil Hardness HB-2H, ASTM D3363 Direct Impact Resistance 80-160 in -lb Adhesion 5A/5B, ASTM D3359 Color (Outside Surfaces of Signal Head) Dark Green (Fed. Color. No. 595A, Color 14056) Color (Inside of visor) Black Gloss Satin or Gloss
2.Pretreatment of Aluminum Surfaces . All exterior and interior surfaces of the aluminum signal head, visors and metallic mounting attachments shall be prepared for powder coating using a non - chrome conversion coating. It shall be either a reactive or dried -in-place chrome -free coati ng to be used as a pre-treatment.
3.Pretreatment Process . The aluminum surfaces shall be subjected to a thorough cleaning process and a non -chrome conversion coating shall then be applied. Rinse stages shall be employed as necessary to remove residual chemicals and contamination. A multi -stage system shall be employed to perform cleaning, rinsing, conversion coating, and passivating rinse/finish individually. No less than three (3) stages shall be employed.
4.Passivating Final Rinse . A passiv ating final rinse shall be applied. The conversion coating and passivating final rinse shall be specifically formulated for use on aluminum surfaces. They shall prevent corrosion of the aluminum, promote adhesion and be compatible with the chosen coating powder.
5.Powder Application . The coating powder shall be applied to a dry surface. Any remaining rinse water shall be allowed to dry or forced dry prior to powder coating. If forced drying is employed the component shall be allowed to cool down to a temperature dictated by the powder manufacturer that will not cause issues with the powder coating. The powder shall be applied electrostatically. Compressed air used for coating shall be supplied at the proper dew point and free of oil, rust or other microscopic contaminants.
6.Curing . The powder coating shall then be cured in an oven. The metal temperature and dwell time required for proper cure of the coating shall be as recommended by the coating powder manufacturer and shall be strictly com plied with.
B.Latching Devices . All stainless -steel latching devices shall not be painted. BASIS OF APPROVAL. Manufacturers or material suppliers desiring to have products considered for inclusion on the Approval List shall prepare and submit copies of drawings, specifications, and test reports to the Director of the Materials Bureau. The review process requires a minimum of 180 calendar days. BASIS OF ACCEPTANCE. Acceptance of signal heads with optically programmed indications will be based on the manufacturer's certificate of compliance with these specification requirements.
724-07 Traffic Signal Head Mounting Hardware and Backplates
SCOPE. This specification covers the material requirements, design criteria, and fabrication specifics for traffic signal head backplates and traffic signal head mounting hardware used for attaching vehicular and pedestrian traffic signal heads to span wires, mast arms, horizontal shaft of monotube traffic signal poles, and post -top or vertical pole bracket mounts.
724-07 Traffic Signal Head Mounting Hardware and Backplates
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 MATERIAL REQUIREMENTS .
A.Traffic Signal Head Mounting Hardware.
1.Reinforcing Plates. Reinforcing plates (minimum 7 ga x 4 -inch-wide galvanized steel) shall be supplied for all polycarbonate vehicular traffic signal head assemblies with three or more traffic signal sections. Reinforcing plates shall be installed in the bottom section of post -top mounted traffic signal heads and in the top -most section of all others. Reinforcing plates shall have a centered hole sized for the attachment of traffic signal head mounting hardware and be shaped to maximize the coverage of surface area within the signal section. The shape may vary between manufacturers.
2.Suspension Components. All traffic signal heads suspension components (e.g., brackets, clamps, trunnions, arms, elbows, tees, crosses, and pipe caps) shall be made of one of the following materials:
a.Malleable Iron. Malleable iron material shall be made in accordance with ASTM A47.
b.Steel Pipe. Steel pipe shall be made in accordance with ASTM A53.
3.Fasteners. The following items shall be made of non -magnetic stainless steel, Type 303 or 304, in accordance with ASTM A763/A763M.
a.All set screws.
b.The U/J -bolts, rivet, and their related nuts, wash ers, and cotter pin in the span-wire clamp.
c.The eyebolt, rivet, tightening bolt, and their related nuts, washers, and cotter pin in the balance adjuster.
4.Pipe Arms. Pipe arms shall be made of steel pipe in accordance with ASTM A53/A53M.
B.Backplates. Backplates shall be constructed of aluminum, polycarbonate or high impact ABS plastic with a minimum thickness of 0.125 inches and shall have a flat black finish. The backplate shall have a 3-inch-wide retro reflective yellow border (Type XI (eleven) weather resistant prismatic sheeting) applied. The backplates shall have appropriate mounting hardware and when mounted shall not obstruct the signal head door openings. The backplates shall have a five (5) inch border around the entire signal head assembly, shall follow the shape of the signal head assembly, and shall be non -louvered. The yellow reflective tape shall border the entire perimeter of the backplate and be a width of three (3) inches. The temperature rating for all backplates shall be - 35 to 165 °F. The reflective tape shall not separate from the backplate within this temperature range. All backplates shall be compatible with the traffic signal head assembly so there are no modifications needed to the backplate. DESIGN CRITERIA .
A.Traffic Signal Head Mounting Hardware. Center junction hubs shall have a threaded opening on the top and sides. The bottom of the hub shall be fully open, except for the necessary thickness of the housing, and shall be securely covered by a flat plate of w eather -resistant design. The plate shall be held in place by a minimum of two screws. Center junction hubs shall be provided with a square or hex-drive set screw on all threaded openings. The top opening shall be provided with two set screws located 90 deg rees to each other. Center junction hubs shall have an opening of at least 3.5 inches in
724-07 Traffic Signal Head Mounting Hardware and Backplates
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 diameter for round openings. Center junction hubs shall have a side length of at least 3.5 inches for rectangular openings. Tees and crosses shall have threaded openin gs to accept the necessary pipe arm and traffic signal head connections. Tees and crosses shall have at least one additional threaded opening to facilitate wiring. The additional opening shall be closed with a threaded metal (eg: malleable iron or steel) p ipe cap. All threaded openings on the tees and crosses shall be provided with a square or hex -drive set screw. Threaded openings on pipe arms shall be tapered. Threaded openings on other pipe fittings shall be pipe straight threads. Flat arms or spiders shall be provided for the bottom of multi -face traffic signal heads. Bottom hardware shall be omitted for multi -face, one -section, traffic signal head assemblies. Connections between the bottom of the traffic signal heads and the arm or spider shal l be flanged or threaded to provide a locking, weather -resistant connection. Traffic signal heads for mast arm or monotube mounting shall be furnished with a mount consisting of upper and lower horizontal arms attaching to the top and bottom of the traffic signal section. The horizontal arms shall attach to a vertical member which in turn clamps to the mast arm (or horizontal shaft of monotube pole structure). The mast arm (or horizontal shaft of monotube pole structure) mount shall have provisions for adjusting the vertical, angular, and rotational positioning of the traffic head in relation to the mast arm (or horizontal shaft of monotube pole structure) so that it is plumb, in line with other traffic signal heads, and properly oriented in relation to traffic. Wiring shall be concealed within the mount. All wiring contact points shall be de-burred to prevent accidental electrical shorting due to insulation removal by sharp edges of metal. Post-top traffic signal heads shall be furnished with a post -top type slip -fitter mounting. Vertical pole bracket -mount traffic signal heads shall be equipped with upper and lower horizontal brackets equipped with pole plates for attachment to the pole with stainless steel bands. FABRICATION D ETAILS .
A.Powder Coating .
1.Coating Powder. All aluminum traffic signal heads, visors and metallic mounting attachments shall be coated with a thermosetting, super durable polyester coating powder formulated for use over aluminum surfaces for high performance in the harsh exterior exposures of New York State. The powder coating film shall possess the following properties: Property Value Film Thickness 3-4 mils Outdoor Weatherability Excellent (>1,000 hrs ASTM B117 Salt Fog). UV Resistance Excellent Pencil Hardness HB-2H, ASTM D3363 Direct Impact Resistance 80-160 in -lb Adhesion 5A/5B, ASTM D3359 Color (Outside Surfaces of Signal Head) Dark Green (Fed. Color. No. 595A, Color 14056) Color (Inside of visor) Black Gloss Satin or Gloss
2.Pretreatment of Aluminum Surfaces . All exterior and interior surfaces of the aluminum signal head, visors and metallic mounting attachments shall be prepared for powder coating using a non- chrome conversion coating. It shall be either a reactive or dried -in-place chrome -free coating to be used as a pre-treatment.
724-07 Traffic Signal Head Mounting Hardware and Backplates
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 3. Pretreatment Process . The aluminum surfaces shall be subjected to a thorough cleaning process and a non-chrome conversion coating shall then be applied. Rinse stages shall be employed as necessary to remove residual chemicals and contamination. A multi -stage system shall be employed to perform cleaning, rinsing, conversion coating, and passivating rinse/finish individually. No less than three (3) stages shall be employed.
4.Passivating Final Rinse . A passivating final rinse shall be applied. The conversion coating and passivating final rinse shall be specifically formulated for use on aluminum surfaces. They shall prevent corrosion of the aluminum, promote adhesion and be compatible with the chosen coating powder.
5.Powder Application . The coating powder shall be applied to a dry surface. Any remaining rinse water shall be allowed to dry or forced dry prior to powder coating. If forced drying is em ployed the component shall be allowed to cool down to a temperature dictated by the powder manufacturer that will not cause issues with the powder coating. The powder shall be applied electrostatically. Compressed air used for coating shall be supplied at the proper dew point and free of oil, rust or other microscopic contaminants.
6.Curing . The powder coating shall then be cured in an oven. The metal temperature and dwell time required for proper cure of the coating shall be as recommended by the coating powder manufacturer and shall be strictly complied with.
B.Latching Devices . All stainless -steel latching devices shall not be painted.
C.Assembly. Traffic signal heads shall be arranged for mounting on span wires, mast arms, horizontal shaft of monotube traffic signal poles, post tops or vertical pole bracket mounts as specified in the contract documents. For span-wire mounting, the traffic signal head shall be provided with a span-wire clamp, balance adjuster and wire outlet fitting. The span -wire clamp shall consist of a shoe, lock bar, two “U” or “J” bolts, and a rivet with cotter pin, nuts, washers, etc., as necessary. The balance adjuster shall consist of a body with threaded eyebolt, a tightening bolt, and a rivet with cotter pin, nuts, washers, etc., as necessary. The wire outlet fitting shall have a continuous opening of a minimum nominal diameter of 1.50 inches for insertion of traffic signal head wiring. The upper opening shall have a weatherproof, insulating -composition cover that provides for the insertion of the wiring. The cover shall be securely mounted to the fitting. The bottom opening shall be threaded and provided with two square or hex-drive set screws located at 180 degrees to each other. The bottom of the fitting shall have integral cast serrations, shall be notched and provided with a serrated locking ring, or shall be provided with a slotted check nut and serrated locking ring. The head shall be assembled so that it hangs plumb. Backplates (with reflector tape) shall be installed on all vehicular traffic signal heads for new or rebuilt traffic signal locations.
1.Single -Face Traffic Signal Head Mounting Hardware. Mounting hardware for a signal -face traffic signal head shall include a 1.5-inch galvanized nipple with cast iron head, gasket, and steel washer for the connection between the wire outlet fitting and the top of the traffic signal head. A metal weather -resistant cap/plug shall be provided for the unused hole in the bottom of the head. The cap/plug shall be of a threaded or flanged design.
2.Multi -Face Traffic Signal Head Mounting Hardware. Mounting hardware for multi - face (2, 3, and 4 -face) traffic signal heads shall include a center junction hub and pipe arms wit h tee or cross -end connectors. Galvanized steel reinforcing plates shall be provided with all polycarbonate traffic signal heads. Tee and cross -end connectors shall be notched for, and supplied with, a serrated locking ring. A 1.5 -inch galvanized nipple wi th cast iron head, gasket, and steel washer shall be
724-08 Shielded Communication Cable
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 supplied for the connection between the tee or cross -end connector and the top of the traffic signal head. Tees and crosses will not be accepted in place of the center junction hub. BASIS OF ACCEPTANCE. Traffic signal head mounting hardware and backplates will be accepted on the basis of a Material Certification that specifies that the product conforms to the requirements of this specification.
724-08 Shielded Communication Cable
SCOPE. This specification covers the material requirements for shielded communication cable for use with traffic signal systems. MATERIAL REQUIREMENTS. Shielded communication cable shall conform to the requirements of the International Municipal Signal Asso ciation (IMSA) specification 20 -2 for polyethylene -insulated, polyethylene - jacketed communication cable with electrical shielding. The gauge and number of conductors shall be as specified in the contract documents. The conductors shall be stranded copper wire. BASIS OF ACCEPTANCE. Shielded communication cable will be accepted on the basis of a Material Certification that specifies that the product conforms to the requirements of this specification.
724-09 Signal Cable With Integral Messenger
SCOP E. This specification covers the material requirements for signal cable with integral messenger for use with traffic signal systems and for aerial installations. MATERIAL REQUIREMENTS. Signal Cable with Integral Messenger shall conform to the requirements of the International Municipal Signal Association (IMSA) Specification 20 -3. The gauge and number of conductors shall be as specified in the contract documents. The conductors shall be stranded copper wire. BASIS OF ACCEPTANCE. Signal Cable with Integral Messenger will be accepted on the basis of a Material Certification that specifies that the product conforms to the requirements of this specification
724-10 Shielded Communication Cable With Integral Messenger
SCOPE. This specification covers the material requirements for shielded communication cable with integral messenger for use with traffic signal systems and for aerial installations. MATERIAL REQUIREMENTS. Shielded Communication Cable with Integral Messenger shall conform to the requirements of the International Municipal Signal Association (IMSA) Specification 20 -
4.The gauge and number of conductors shall be as specified in the contract documents. The conductors shall be stranded copper wire. BASIS OF ACCEPTANCE. Shielded Communication Cable with Integral Messenger will be accepted on the basis of a Material Certification that specifies that the product conforms to the requirements of this specification.
724-11 Traffic Signal Pole Mounting Har Dware
SCOPE. This specification covers the material requirements, design criteria, and fabrication details for traffic signal pole mounting hardware.
724-11 Traffic Signal Pole Mounting Hardware
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 MATERIAL REQUIREMENTS .
A.Anchor Bolts. Traffic Signal Pole Anchor Bolts shall meet the requirements of ASTM F1554 Grades 36, or Grade 55. Additionally, span wire poles, pedestrian signal poles and monotubes may also use Grade 105.
B.Hex Nuts. Hex nuts shall meet the requirements of ASTM A563. The type and grade of steel for hex nuts shall be compatible (to prevent galling) and of comparable strength to the steel used for the anchor bolts.
C.Washers. Washers shall meet the requirements of ASTM F436.
D.Anchor Plates. Anchor Plates used on anchor bolts shall meet the requirements of ASTM A36 (A709 Grade 36) . These plates shall be either drilled and tapped to accept the threaded anchor bolts or drilled 0.125 inches larger than anchor bolt diameter. DESIGN CRITERIA. Anch or bolts shall be long enough to embed 30 bolt diameters (minimum) into the concrete foundation. “L” bends shall not be allowed on the embedded end of anchor bolts. The number of anchor bolts and the bolt circle diameter shall be determined by the pole man ufacturer unless specified in the contract documents. Each anchor bolt shall be equipped with two hex nuts and two flat washers for attaching the pole to the foundation. Each anchor bolt shall also be equipped with either a drilled or tapped (threaded) st eel anchor plate; two hex nuts are also required for drilled anchor plates and are optional for tapped (threaded) anchor plates. At least four anchor bolt threads must be visible below the anchor plate or bottom hex nut before installation. Anchor bolts sh all be long enough to embed 30 bolt diameters (minimum) into the concrete foundation. “L” bends shall not be allowed on the embedded end of anchor bolts. The number of anchor bolts and the bolt circle diameter shall be determined by the pole manufacturer u nless specified in the contract documents. Each anchor bolt shall be equipped with four hex nuts, drilled or tapped steel anchor plates, and two flat washers for attaching the pole to the foundation. FABRICATION DETAILS. All anchor bolts, hex nuts, and fl at washers required for each pole shall be supplied by the Contractor. Anchor bolts shall be installed using double nuts and drilled anchor plates, or threaded anchor plates (nuts optional), and shall be designed by the pole manufacturer. Hex nuts, flat washers, and at least the top 12 inches of anchor bolts shall be hot -dipped galvanized in accordance with §719 -01 Galvanized Coatings and Repair Methods, Type II. All anchor bolts, hex nuts, and flat washers required for each pole shall be supplied by the Contractor. Anchor bolts shall be installed using double nuts and anchor plates, or threaded anchor plates, and shall be designed by the pole manufacturer. Hex nuts, flat washers, and at least the top 12 inches of anchor bolts shall be hot-dipped galvanized in accordance with §719 -01 Galvanized Coatings and Repair Methods , Type II. Flat washers will not be required when the holes on the base plate are within the following tolerances:
A.Hole diameter not more than 0.125 inch greater than the bolt diameter, and bolt diameter less than 1 inch.
B.Hole diameter not more than 0.25 inch greater than the bolt diameter, and bolt diameter equal to or greater than 1 inch.
C.Hole diameter not more than 0.375 inch greater than the bolt diameter, and b olt diameter equal to or greater than 2 inches.
724-12 Traffic Signal Vehicle and Pedestrian Detectors
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 BASIS OF APPROVAL. Manufacturers or material suppliers desiring to have products considered for inclusion on the Approval List shall prepare and submit copies of drawings, specifications, and test reports to the Director of the Materials Bureau. The review process requires a minimum of 180 calendar days. BASIS OF ACCEPTANCE. Acceptance of traffic signal pole mounting hardware will be based on the manufacturer's certificate of compliance with these specification requirements.
724-12 Traffic Signal Vehicle and Pedestrian Detectors
SCOPE. This specification covers the material requirements for traffic signal vehicle and pedestrian detectors. MATERIAL REQUIREMENTS. All traffic signal vehicle and pede strian detectors shall be constructed of components capable of withstanding extreme hot and cold temperatures (temperature range of -35 to 165 °F), as well as extreme weather conditions such as sleet, snow, freezing rain, high winds, etc., and be corrosion resistant. Vehicle detectors shall be capable of detecting every type of vehicle that is licensed to date. All electrical components shall be UL listed or recognized for their intended function. Refer to the NYSDOT Transportation Management Equip ment Specifications (TMES) for details as follows: Chapter 3 for Loop Detectors, Chapter 10 for Microwave Detectors, and Chapter 11 for Ultrasonic Detectors. BASIS OF APPROVAL. Manufacturers or material suppliers desiring to have products considered for inclusion on the Approved Products List (APL) shall submit samples of the product, together with an operation and maintenance manual for each manufacturing or supply location, to the Traffic Signal Laboratory, 16 Avis Drive, Latham, New York 12110. Refer to Chapter 1 of the NYSDOT Transportation Management Equipment Specifications (TMES) for instructions. The Department will test the submitted samples in accordance with these specifications and Department instructions. The review process requires a minimum o f 180 calendar days. Test procedures are available from the Traffic Signal Laboratory upon request. Upon approval, the name of the manufacturer and the product will be placed on the Approved Products List. BASIS OF ACCEPTANCE. Traffic Signal Detectors wil l be accepted on the basis of the product’s part number with manufacturer’s name appearing on the Approved Products List and a Material Certification that the product is the same as the one appearing on the Approved Products List and that it conforms to the requirements of this specification. Refer to the Transportation Management Equipment Specifications (TMES).
724-13 Electrical Service Disconnect/Generator Transfer Switches
SCOPE. This specification covers the material requirements and design criteria for electrical service disconnect/generator transfer switches. MATERIAL REQUIREMENTS. Electrical service disconnect/generator transfer switch enclosures shall be constructed of 0.060 -inch stainless steel and shall be rated NEMA 3R. Refer to NYSDOT Transportation Management Equipment Specifications (TMES) Chapter 20 for detailed electrical service disconnect/ generator transfer switch specifications. DESIGN CRITERIA. Electrical service disconnect/generator transfer switches shall be designed to satisfy the ANSI requirements for service equipment and for generator transfer switches. All electrical components shall be UL listed or recognized for their intended function. BASIS OF APPROVAL. Manufacturers or material suppliers desiring to have products considered for inclusion on the Approved Products List shall submit samples of the product, together with an operation
724-14 Electrical Service Cable
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 and maintenance manual for each manufacturing or supply location, to the Traffic Signal Laboratory, 16 Avis Drive, Latham, New York 12110. Refer to Chapter 1 of the NYSDOT Transportation Management Equipment Specifications (TMES) for instructions. The Department will test the submitted samples in accordance with these speci fications and Department instructions. The review process requires a minimum of 180 calendar days. Test procedures are available from the Traffic Signal Laboratory upon request. Upon approval, the name of the manufacturer and the product will be placed on the Approved Products List. BASIS OF ACCEPTANCE. Electrical disconnect/generator transfer switches will be accepted on the basis of the product’s part number with manufacturer’s name appearing on the Approved Products List and a Material Certification that the product is the same as the one appearing on the Approved Products List and that it conforms to the requirements of this specification.
724-14 Electrical Service Cable
SCOPE. This specification covers the material requirements for e lectrical service cable used in providing electrical service to traffic signal heads. Electrical service cable shall be installed in underground ducts, used as an aerial cable supported by a messenger cable, or used as a direct burial cable. MATERIAL REQU IREMENTS. Electrical service cable shall meet the requirements of the National Electrical Code and be Underwriters Laboratory approved. Electrical service cable shall be rated for 600 - volt service and the conductors shall be stranded copper wire. The number and size of the conductors shall be in accordance with the contract documents. Electrical service cable shall conform to the requirements of the International Municipal Signal Association (IMSA) Specification 20-5. BASIS OF ACCEPTANCE. Electrical s ervice cable will be accepted on the basis of a Material Certification that specifies that the product conforms to the requirements of this specification.
724-15 Fire Pre -Emption Tell -Tale Light
SCOPE . This specification covers the material requirements and design criteria for a fire pre -emption tell-tale light. MATERIAL REQUIREMENTS . The fire pre -emption tell -tale light shall consist of a Xenon flash tube rated at 10.76 Mlx and 2000 hours life. DESIGN CRITERIA . The flash rate shall be 60 to 80 flashes per minute. The fire pre -emption tell -tale light shall be capable of normal operation from -35 to 165 °F. The fire pre -emption tell -tale light shall be contained in a vandal -resistant, weatherproof housing and mounted with a blue -colored, heat -resistant, shatterproof globe. It shall be visible through 360 degrees horizontally. The fire pre -emption tell -tale light shall operate from a 115 VAC, 60 Hz single phase power source. BASIS OF ACCEPTANCE . Acceptance of the fire pre -emption tell -tale light sh all be based on the manufacturer's certification of compliance with these specification requirements. Acceptance of material may require supplementary sampling and testing at the discretion of the Materials Bureau. A Material Certification (either manufact urer’s certification or material supplier’s certification) shall be provided for every order placed by the Department or it’s contractor(s).
724-16 Thru 724 -19 (Vacant)
724-20 Inductance Loop Wire
724-21 Sh Ielded Lead -In Cable
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 SCOPE. This specification covers the material requirements for wire used in inductance loop vehicle detectors. MATERIAL REQUIREMENTS. Loop wire shall be one conductor No. 14 AWG wire loosely encased in a tube in conformance to the requirements of the International Municipal Signal Association (IMSA) Specification 51-5. BASIS OF ACCEPTANCE. Inductance Loop Wire will be accepted on the basis of a Material Certification that specifies that the product conforms to the requirements of this specification .
724-21 Shielded Lead -In Cable
SCOPE. This specifi cation covers the material requirements for shielded lead -in cable used with inductance loop vehicle detectors. MATERIAL REQUIREMENTS. Shielded lead -in cable shall consist of No. 14 AWG conductors in conformance to the requirements of the International Mu nicipal Signal Association (IMSA) Specification 50-2. BASIS OF ACCEPTANCE. Shielded lead -in cable will be accepted on the basis of a Material Certification that specifies that the product conforms to the requirements of this specification.
724-22 Roadway Loop Embedding Sealer
SCOPE. This specification covers the material requirements for Roadway Loop Embedding Sealer which is used when installing inductance loops. MATERIAL REQUIREMENTS. Roadway Loop Embedding Sealer shall be used to encapsulate Traffic Signal Loop Wires embedded in highway materials. The sealer shall be applied cold and may be a one or two component system, the viscosity of which shall be sufficient to allow the material to be either poured or placed under pressure an d fully encapsulate the loop wires. The sealer shall be curable at temperatures of 40 °F and above. When the sealer is bonded to common paving materials, it shall have sufficient strength and resiliency to withstand stresses due to vibrations and differenc es in expansion and contraction as a result of temperature changes or traffic conditions. The sealer shall be compatible with the sheathing or covering of loop inductance wires. The material shall meet the requirements of either the Flexible or Hard design ation in Table 724 -22-1. Materials designated Flexible require a 180 -degree mandrel bend test @ 80 °F with no breaking as part of the accelerated weathering testing. TABLE 724 -22-1 ROADWAY LOOP EMBEDDING SEALER PROPERTIES Property Test Method Flexible Hard Min. Max. Min. Max. Hardness, Shore ASTM D2240 A15 A40 A50 D65 Pot Life @70 °F, minutes NYSDOT 724 -40E 15 --- 15 --- Curing Time (tack free surface) @ 70 °F, hours NYSDOT 724 -40E --- 2 --- 2 Tensile Strength, psi ASTM D412 50 --- 400 --- Elongation, percent ASTM D412 150 --- 20 --- Water Absorption, percent NYSDOT 724 -40E --- 1.0 --- 1.0
724-23 Pedestrian Push Button
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 Adhesion to Asphalt Concrete, lbs NYSDOT 724 -40E 200 --- 500 --- Adhesion to Concrete, lbs NYSDOT 724 -40E 50 --- 300 --- Extension, inches NYSDOT 724 -40E 1/4 --- 1/8 --- Accelerated Weathering (Flexible requires additional bend test) NYSDOT 724 -40E No cracking, checking, chalking, or shrinking
A.Chemical Resistance. Cured sealer shall be resistant to most chemicals and solvents including salts, acids, hydrocarbons, etc. Packaged stability of each component in original unopened containers, stored in temperatures between 32 and 100 °F, shall be a minimum of six months. BASIS OF APPROVAL. Applications for approval of Roadw ay Loop Embedding Sealer shall be submitted to the Materials Bureau by the manufacturer accompanied by a one-gallon sample of the product and all pertinent sealer information including, but not limited to, manufacturer's test results, application procedure s, and safety data sheet. Upon approval by the Materials Bureau, the name of the product will be placed on the Approved List based on the compatibility of the sealer with the pavement material. BASIS OF ACCEPTANCE. Roadway Loop Embedding Sealer will be ac cepted on the basis of the product appearing on the Approved List and a Material Certification that the product is the same as the one appearing on the Approved List and that it conforms to this specification.
724-23 Pedestrian Push Button
SCOPE . This specification covers the material requirements and fabrication details for a pedestrian push button compliant with the Public Rights -of-Way Accessibility Guidelines (PROWAG) – Piezo design pushbutton. MATERIAL REQUIREMENTS . The push button body shall be powder -coated (dark green) aluminum construction and be 3 inches in diameter. The push button shall be 2 inches in diameter and of stainless - steel construction. Refer to NYSDOT Transportation Management Equipment Specifications (TMES) Chapter 21 for d etailed specifications of the Piezo pedestrian pushbutton. The temperature rating for pedestrian push buttons shall be -35 to 165 °F. DESIGN CRITERIA .
A.General Requirements . An audible “beep” shall sound when activating the push button. The push buttons shall have a minimum operating life of 100 million actuations. The push buttons shall be compatible with all 242 DC Isolation Units. The pedestrian push button station shall incorporate the pedestrian push button and informational sign into a compl ete assembly by mounting them to a coated, cast aluminum frame.
B.Functional Requirements. The push button shall be equipped with a pole mounting housing to enable mounting the button to a flat or a convex surface. The push button unit shall be PROWAG compliant (Piezo type). The push button shall require a force of 1 to 3 lbs. to activate. The pedestrian station frame shall be constructed to accept the Piezo pushbutton as well as a 9-inch x 15-inch pedestrian information sign.
C.Mechanical Construction Requirements . The switch shall be piezo -driven and solid state with essentially no moving parts. The push button and pedestrian pushbutton frame shall be highly vandal - resistant and shall be assembled with tamper -resistant, stainless steel hardware.
724-23 Pedestrian Push Button
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 D. Electrical Requirements . The push button shall operate at voltages of 15 to 24 VDC or 12 to 24 VAC. The push button shall have an ON Resistance of 10 Ohms when the button is activated and placing a call. A standby current of 10 micro amps is typical. The push button shall require two conductors to be run from the traffic signal cabinet to the push button to operate. The push button shall have a solid -state electronic piezo switch rated for 100 million cycles with no moving plunger or moving el ectrical contacts.
E.Environmental Operations . The push button shall be capable of continuous operation over a temperature range of -35 to 165 °F. The push button shall operate immediately after being completely immersed in water for 5 minutes. FABRICATION DETAILS .
A.Powder Coating .
1.Coating Powder. All aluminum traffic signal heads, visors and metallic mounting attachments shall be coated with a thermosetting, super durable polyester coating powder formulated for use over aluminum surfaces for high performance in the harsh exterior exposures of New York State. The powder coating film shall possess the following properties: Property Value Film Thickness 3-4 mils Outdoor Weatherability Excellent (>1,000 hrs ASTM B117 Salt Fog). UV Resistance Excellent Pencil Hardness HB-2H, ASTM D3363 Direct Impact Resistance 80-160 in -lb Adhesion 5A/5B, ASTM D3359 Color (Outside Surfaces of Signal Head) Dark Green (Fed. Color. No. 595A, Color 14056) Color (Inside of visor) Black Gloss Satin or Gloss
2.Pretreatment of Aluminum Surfaces . All exterior and interior surfaces of the aluminum signal head, visors and metallic mounting attachments shall be prepared for powder coating using a non - chrome conversion coating. It shall be either a reactive or dried -in-place chrome -free coating to be used as a pre-treatment.
3.Pretreatment Process . The aluminum surfaces shall be subjected to a thorough cleaning process and a non -chrome conversion coating shall then be applied. Rinse stages shall be employed as necessary to remove residual chemicals and contamination. A multi -stage system shall be employed to perform cleaning, rinsing, conversion coating, and passivating rinse/finish individually. No less than three (3) stages shall be employed.
4.Passivating Final Rinse . A passivating final rinse shall be applied. The conversion coating and passivating final rinse shall be specifically formulated for use on aluminum surfaces. They shall prevent corrosion of the aluminum, promote adhesion and be compatible with the chosen coating powder.
5.Powder Application . The coating powder shall be applied to a dry surface. Any remaining rinse water shall be allowed to dry or forced dry prior to powder coating. If forced drying is employed the component shall be allowed to cool down to a temperature dictated by the powder manufacturer that will not cause issues with the powder coating. The powder shall be applied electrostatically.
724-24 Pedestrian Push Button Station
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 Compressed air used for coating shall be supplied at the proper dew point and free of oil, rust or other microscopic contaminants.
6.Curing . The powder coating shall then be cured in an oven. The metal temperat ure and dwell time required for proper cure of the coating shall be as recommended by the coating powder manufacturer and shall be strictly complied with.
B.Latching Devices. All stainless -steel latching devices shall not be painted. BASIS OF APPROVAL. Manufacturers or material suppliers desiring to have products considered for inclusion on the Approval Products List shall prepare and submit copies of drawings, specifications , and test reports to the Director of the Materials Bureau. The review process requires a minimum of 180 calendar days. BASIS OF ACCEPTANCE. Pedestrian push button and sign will be accepted on the basis of the product appearing on the Approved Products Li st and a Material Certification that the product conforms to this specification.
724-24 Pedestrian Push Button Station
SCOPE . This specification covers the material requirements, design criteria and fabrication details for a pedestrian push button and pedestrian station frame, compliant with the Public Rights -of-Way Accessibility Guidelines (PROWAG). MATERIAL REQUIREMENTS . The push button body shall be powder -coated (dark green) aluminum construction and be 3 inches in diameter. The push button shall be 2 inches in diameter and of stainless - steel construction. The push button mounting frame (for the pedestrian push button sta tion) shall be powder -coated (dark green) aluminum construction and shall have an integral sign frame for a 9-inch x 15- inch sign. Refer to NYSDOT Transportation Management Equipment Specifications (TMES) Chapter 21 for detailed specifications of the Piez o pedestrian pushbutton. DESIGN CRITERIA .
A.General Requirements. An audible “beep” shall sound when activating the push button. The push buttons shall have a minimum operating life of 100 million actuations. The push buttons shall be compatible with all 242 DC Isolation Units. The pedestrian push button station shall incorporate the pedestrian push button and informational sign into a complete assembly by mounting them to a coated, cast aluminum frame.
B.Functional Requirements. The push button shall be equipped with a pole mounting housing to enable mounting the button to a flat or a convex surface. The push button unit shall be PROWAG compliant (Piezo type). The push button shall require a force of 1 to 3 lbs. to activate. The pedestrian station frame shall be constructed to accept the Piezo pushbutton as well as a 9-inch x 15-inch pedestrian information sign.
C.Mechanical Construction Requirements. The switch shall be piezo -driven and solid state with essentially no moving parts. The push button and pedestrian pushbutton frame shall be highly vandal - resistant and shall be assembled with tamper -resistant, stainless steel hardware.
D.Electrical Requirements . The push button shall operate at voltages of 15 to 24 VDC or 12 to 24 VAC. The push button shall have an ON Resistance of 10 Ohms when the button is activated and placing a call. A standby current of 10 micro amps is typical. The push button shall require two
724-24 Pedestrian Push Button Station
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 conductors to be run from the traffic signal cabinet to the push button to operate. The push button shall have a solid -state electronic piezo switch rated for 100 million cycles with no moving plunger or moving electrical contacts.
E.Environmental Op erations . The push button shall be capable of continuous operation over a temperature range of -35 to 165 °F. The push button shall operate immediately after being completely immersed in water for 5 minutes. FABRICATION DETAILS .
A.Powder Coating .
1.Coating Powder. All aluminum traffic signal heads, visors and metallic mounting attachments shall be coated with a thermosetting, super durable polyester coating powder formulated for use over aluminum surfaces for high performance in the harsh exterior exposures of New York State. The powder coating film shall possess the following properties: Property Value Film Thickness 3-4 mils Outdoor Weatherability Excellent (>1,000 hrs ASTM B117 Salt Fog). UV Resistance Excellent Pencil Hardness HB-2H, ASTM D3363 Direct Impact Resistance 80-160 in -lb Adhesion 5A/5B, ASTM D3359 Color (Outside Surfaces of Signal Head) Dark Green (Fed. Color. No. 595A, Color 14056) Color (Inside of visor) Black Gloss Satin or Gloss
2.Pretreatment of Aluminum Surfaces . All exterior and interior surfaces of the aluminum signal head, visors and metallic mounting attachments shall be prepared for powder coating using a non - chrome conversion coating. It shall be either a reactive or dried -in-place chrome -free coating to be used as a pre-treatment.
3.Pretreatment Process . The aluminum surfaces shall be subjected to a thorough cleaning process and a non -chrome conversion coating shall then be applied. Rinse stages shall be employed as necessary to remove residual chemicals and contamination. A multi -stage system shall be employed to perform cleaning, rinsing, conversion coating, and passivating rinse/finish individually. No less than three (3) stages shall be employed.
4.Passivating Final Rinse . A passivating final rinse shall be applied. The conversion coating and passivating final rinse shall be specifically formulated for use on aluminum surfaces. They shall prevent corrosion of the aluminum, promote adhesion and be compatible with the chosen coating powder.
5.Powder Application . The coating powder shall be applied to a dry surface. Any remaining rinse water shall be allowed to dry or forced dry prior to powder coating. If forced drying is employed the component shall be allowed to cool down to a temperature dictated by the powder manufacturer that will not cause issues with the powder coating. The powder shall be applied electrostatically. Compressed air used for coating shall be supplied at the proper dew point and free of oil, rust or other microscopic contaminants.
724-99 for Site Manager Use
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Section 700 STANDARD SPECIFICATIONS (USC) May 1, 202 4 VOLUME 4 6. Curing . The powder coating shall then be cured in an oven. The metal temperature and dwell time required for proper cure of the coating shall be as recommended by the coating powder manufacturer and shall be strictly complied with.
B.Latching Devices . All stainless -steel latching devices shall not be painted. BASIS OF APPROVAL. Manufacturers or material suppliers desiring to have products considered for inclusion on the Approved Products List shall submit samples of the product, together with an operation and maintenance manual for each manufacturing or supply location, to the Traffic Signal Laboratory, 16 Avis Drive, Latham, New York 12110. Refer to Chapter 1 of the NYSDOT Transportation Management Equipment Specifications (TMES) for instructions. The Department will test the submitted samples in accordance with these specifications and Department instructions. The review process requires a minimum of 180 calendar days. Test procedures are available from the Traffic Signal Laboratory upon request. Upon approval, the name of the manufacturer and the product will be placed on the Approved Products List. BASIS OF ACCEPTANCE. Pedestrian push button and pedestrian push button station shall be accepted upon the manufacturer's certification of compliance with these specification requirements Acceptance of material may require supplementary sampling and testing at the discretion of the Materials Bureau.
724-99 for Site Manager Use
SECTION 725 - MISCELLANEOUS METALS AND PLASTICS
725-01 Copper Flashing
SCOPE. This specification covers the material requirements for copper flashing. MATERIAL REQUIREMENTS. Sheet copper for flashing shall be rolled from copper fulfilling the requirements of ASTM B5. This sheet metal shall be cold rolled soft copper. BASIS OF ACCEPTANCE. Acceptance of this material will be based on the manufacturer's certification that the material meets the specification requirements.
725-02 Steps for Manh Oles
SCOPE. This specification covers the material requirements for steps used in manholes. GENERAL. The minimum design live load, for steps, appurtenances and fastenings, shall be a single concentrated load of 800 pounds . The live loads imposed by persons occupying the steps shall be considered to be concentrated at such points as will cause the maximum stress in the structural member being considered. Steps shall be designed so a worker's foot cannot slide off the end. The minimum length of the rungs shall be 10 inches . Whenever a combination of dissimilar types of metals are used in the manufacture of steps, appurtenances and fastenings, the materials shall be treated to prevent deleterious effects. MATERIAL REQUIREMENTS . Manhole steps shall be fabricated from one of the following:
A.Ferrous Metal. Steps shall conform to one of the following requirements:
Source: New York Standard Specifications, 2024 Edition. Pages 1126–1155 of 1,264.