632.01 596 ITEM 632 TRAFFIC SIGNAL EQUIP MENT
632.01 Description
632.02 Contractor Pers onnel Requirements
632.03 Materials and Equipment
632.04 Shop Drawings
632.05 General
632.06 Vehicular Signal Head, Conventional
632.07 Vehicular Signal Head, Optically Programmed
632.08 Pedestrian Signal Head
632.09 Pedestrian Pushbutton
632.10 Loop Detector Unit
632.11 Detector Loop
632.14 Foundations
632.15 Signal Support
632.16 Strain Pole
632.17 Wood Pole
632.18 Down Guy Assembly
632.19 Pedestal
632.20 Conduit Riser
632.21 Cable Support Assembly
632.22 Messenger Wire
632.23 Cable and Wire
632.24 Power Service
632.25 Covering of Vehicular and Pedestrian Signal Heads
632.26 Removal of Traffic Signal Installation
632.27 Reuse of Traffic Signal Equipment
632.28 Testing
632.29 Method of Measurement
632.30 Basis of Payment
632.01 Description. This work consists of furnishing and installing traffic
signal equipment, complete and ready for service. This work also includes necessary excavation and backfill, disposal of discarded materials, restoration of disturbed facilities, and surfaces to a condi tion equal to that existing before the Work started, and electrical testing as specified. Pull boxes, conduits, ground rods, and cable splicing kits required for traffic signal equipment installations are specified in Item 625.
632.02 Contractor Personnel Requirements. Conform to the requirements of
Supplement 1063 for the installation or testing of traffic signal equipment.
632.03 Materials and Equipment. Furnish new materials and equipment of
first quality, of current design, and free from defects. Use el ectrical parts, wire, switches, and other elements of the installations capable of carrying the required current without excessive heating or drop of potential. Ensure that major items or assemblies of equipment bear a nameplate, indelible marking, or bran d that identifies the type, model, catalog number, and manufacturer. 632.04 597 Furnish materials and equipment conforming to: Concrete, Class QC Misc or QC 1 ....................... 499, 511 Steel*: Poles, supports, arms, appurtenances and anchor bases ..................... 730.02, 730.03, 730.04, ................................ ................ 730.05, 730.06, 730.07, ................................ .............................. 732.12, 732.11 Pedestals ................................ ............................. 732.15 Backplates ................................ .......................... 732.22 Hardware ................................ ............................ 730.08 Stainless steel hardware ................................ ..... 730.10 Other Items: Conduit, rigid ....................... 725.04, 725.051, 725.052 Ground rod ................................ ......................... 725.16 Pull boxes .................... 725.06, 725.07, 725.08, 725.12 Identifying tags o r bands ................................ .... 725.02 Signal heads ................ 732.01, 732.02, 732.03, 732.05 Lamps ................................ ................................ 732.04 Pushbuttons ................................ ........................ 732.06 Detectors ................................ ............... 732.07, 732.08 Wood poles ................................ ........................ 732.13 Down guys ................................ ......................... 732.14 Conduit risers ................................ ..................... 732.16 Cable supports ................................ .................... 732.17 Messenger wire ................................ .................. 732.18 Cable and wire ................................ ................... 732.19 Power service ................................ ..................... 732.20 Disconnect Switch with enclosure ..................... 732.21 Backplates ................................ .............................. 732.22 Tether Wire ................................ ...................... 732.185 * Acceptance of materials and products is based on certified test data, furnished in triplicate, or on test results of samples according 106.04, as required by the Laboratory.
632.04 Shop Drawings. Furnish shop drawings according to 625.06.
632.05 General. Ensure that major items of traffic signal control equipment
used in combination are compatible, interchangeable and, whenever feasible, provided by the same manufacturer or supplier. Perform work in compliance with applicable local laws and codes, the National Electrical Code, the National Electrical Safety Code, the Standard for Electrical Safety in the Workplace and OSHA. Ensure that the tr affic control equipment installed in controller cabinets are shop prewired according to a wiring diagram that conforms to plan and specification requirements of the specific project and intersection, and show all wire harness and field connections required , with abbreviations according to Table 632.05 -1. Furnish a neat and legibly drawn wiring diagram, reproduced on durable paper, and place two copies in a plastic envelope fastened to the inside of the controller cabinet. Identify cable and wire by tags or bands at pull boxes and controller cabinets, with size, material, and method of marking that conform to 725.02, except ensure 632.05 598 that the identification on the tags or bands conforms to the wiring diagram with abbreviations according to Table 632.05 -1. The Co ntractor may identify field wiring using an indelible pen on a plastic tag instead of embossed letters. Tags shall be a minimum of 1 inch diameter if round and 1 inch by ½ inch if rectangular. Letters shall be clearly legible. Use spade terminals for wiring connected at signal heads and the wiring connected at terminal blocks within controller cabinets. However, for incoming power wiring, use either spade terminals or bared conductor wire connected to terminal points utilizing screw or spring applied c lamping surfaces compatible with both cooper and aluminum wire and providing a positive grip. Neatly lash and fasten completed wiring to interiors with clamps and/or ties. TABLE 632.05 -1 TABLE AND WIRE IDENT IFICATION Cable Tag Ground GND Power (2 wire)1 120 volt AC +AC - or ACN Power (3 wire) 1 120/240 volt Neutral wire AC + 1, AC + 2 AC- or ACN Phase A Phase 1 Phase 1 northbound left turn lanes A 1 1 NBLT Phase A, pedestrian signal A PD Overlap, phase A + C Overlap, phase 1 + 6 A + C 1 + 6 Detector lead -in, phase A Detector lead -in, phase 1 Detector lead -in, phase 1 northbound left turn lanes DET A DET 1 DET 1 NBLT Detector lead -in, phase A (call type) Detector lead -in, phase 1 (call type) northbound thru lanes DET A CALL DET 1 CALL NB-THRU Detector harness[1] DET A Interconnect IC Pre-emption, fire PE FIRE Pre-emption, railroad PE RR [1] Place the tag next to the MS plug at the detector amplifier. When constructing the traffic control system, cooperate with the agency supplying the electric service. Supply 120/240 volt, single -phase, three -wire (grounded neutral) power to the disconnect switch. After completion of the 10 day performance test in compliance with 632.28 and until acceptance, the Contractor is responsible for the care and maintenance of traffic control equipment installed or reused as part of the Contract. Upon acceptance of the project, transfer to the Department all manufacturers’ guarantees or warranties covering installed electrical or mechanical equipm ent. 632.06 599 Furnish two copies of wiring diagrams, service manuals, and instructions on installation and maintenance for each different type, model, or system of equipment used on the project.
632.06 Vehicular Signal Head, Conventional. Furnish heads in arrangements
such that from one to a maximum of five sections assembled with the specified lens size, color, and circular or arrow configuration form a specific signal face. Mount signal faces alone as a one -way head when backplates are used. Install sign als in a plumb condition, using a balance adjuster only if approved by the engineer. Fit heads mounted on mast arms, except those intended to be rigidly mounted, with a universal hanger allowing the head to swing in both longitudinal and transverse directi ons. Use drop pipes/extenders of suitable length only when necessary to bring the bottom of the signal heads to a proper roadway clearance. Drop pipes/extenders shall be kept as short as necessary on backplated signals. Use of drop pipes/extenders greater than 1.5 feet in length must be approved by the Engineer. Use disconnect hangers for suspended heads on ly when specified. Orient each signal face to its traffic approach, and lock faces in place by the serrated or other type device incorporated in signal housing and support hardware. Before closing serrations, apply a bead of Room -Temperature Vulcanizing (RTV) silicone to all serrated surfaces and then tighten. RTV silicone shall be white to facilitate visual inspection. On heads with dual concentric serra ted rings, completely fill the space between the rings with RTV silicone. Install LED lamps in each section. Furnish backplates unless specified otherwise.
632.07 Vehicular Signal Head, Optically Programmed. Furnish heads of this
type consisting totally o f optically programmed sections unless an intermix of optically programmed and conventional sections is specified. Install approved LED light sources or lamps in each optically programmed section. Program each signal section according to the plan requireme nts. Upon completion of the project, deliver all programming tools and devices to the maintaining agency. Furnish backplates unless specified otherwise.
632.08 Pedestrian Signal Head. Furnish heads with the type of light source and
symbol height specified. Orient each signal head to its crosswalk, and lock heads in place by the serrated or other type device incorporated in signal housing and support hardware. Close openings unused for mounting purposes with weatherproof caps.
632.09 Pedestrian Pushbutton. Properly orient and install pushbuttons on
poles or pedestals. Service pushbuttons mounted on steel poles by wiring inside the poles. Furnish 3/4 inch (19 mm) diameter holes through the back of the housing and the pole wall, install a rubber grommet, and r oute wiring through until no external wiring is visible. Plug any unused conduit attachment holes. Attach the housing by machine or self -tapping screws in the housing back wall. Service pushbutton mounted on wooden poles through conduit. Furnish flat sheet pedestrian pushbutton signs in accordance with 630.04 . 632.10 600 632.10 Loop Detector Unit . Install and tune detector units to their loops with the sensitivity set for optimum operation and any interference or cross talk eliminated be tween other detector units in the cabinet. Perform a field check to ensure that no extraneous detections are occurring by observing each detector unit’s operation to determine that a signal occurs only when a vehicle enters its associated loop. If actuatio ns are observed when there is no vehicle in the loop, eliminate the extraneous detections. For any project using State or Federal funds, all stop line detection zones shall reliably detect motorcycles and bicycles, and all dilemma zone detectors shall reli ably detect motorcycles.
632.11 Detector Loop. Saw slots in the pavement for installation of vehicle
detector loop wire in the configuration, dimensions, and combinations required. Cut an extension from the loop to the pavement edge to allow wire routing to an adjacent pull box. Furnish slots 1/16 to 1/8 inch (1.6 to 3 mm) wider than the outside diameter of the loop wire or tubing. Ensure that the slot depth provides a covering of not less than 3/4 inch (19 mm) above the uppermost detector wire tubing after the loop installation is completed. Before installing loop detector wire, brush and blow all slots clean of loose material and completely dry. Install loop detector wire according to 632.23. Conform to all applicable state and local nuisance dust reg ulations, and OAC 3745 -17-08 while saw cutting. Fill the slots completely with a flexible embedding sealant, listed on the ODOT QPL. Do not disturb slots until sealant has cured. Cured sealant shall be level with or higher than the pavement surface. For l oop detector wire installations in new asphalt, the Contractor may saw slots and embed sealant in a subsurface course with subsequent covering by the surface course, subject to the Engineer’s approval.
632.14 Foundations. Locate support foundations, and st ake with the proper
elevation. If underground or overhead obstacles are encountered during stakeout, or to correct slope and subsurface difficulties, change foundation location and orientation with the approval of the Engineer. Ensure that the approved loc ation provides a safe clearance from overhead power lines for construction operations, in compliance with applicable Codes. The Contractor is responsible for the correct location, elevation, and orientation for all poles and pedestals installed on the foundations. Excavate for foundations using an earth auger to specified dimensions according to 503.04. Exercise caution when excavating in areas of underground installations to avoid their disturbance or damage. When a cave -in occurs, excavate using casing, sleeving, or other methods, with the Engineer’s approval. If subsurface obstructions are encountered, remove the obstructions, or replace the excavated material and relocate the foundation, with the Engineer’s approval. If bedrock is encountered, the Contra ctor may reduce that portion of the specified foundation depth within the bedrock up to 50 percent. Perform all necessary dewatering of the excavation. Perform foundation concrete work according to 511, except that the loading restrictions in 511.14 a re modified by this subsection. Place the concrete against undisturbed soil or compacted embankment. Form the top of the foundations to a 632.15 601 nominal depth of 6 inches (150 mm) below the groundline. Place the concrete foundation, including formed top, in one c ontinuous concrete pour. For foundations for anchor base type supports, provide the required reinforcing rods, and have anchor bolts and conduit ells accurately held by a template. Remove forms and templates once the concrete has hardened sufficiently so a s not to be susceptible to damage. After 14 days, erect and load supports on anchor base foundations. The Contractor may erect and load supports after 7 days if the tests of two beam specimens of concrete yield an average modulus of rupture of not less tha n 650 pounds per square inch (4.5 MPa).
632.15 Signal Support. Furnish supports with mast arms with the required pole
and arm length, anchor bolt circle diameter, and anchor bolt size. Ensure that the combination signal supports with light pole extension p rovide for the attachment of a luminaire bracket arm. Adjust anchor base type supports with an initial rake so that when loaded the support poles assume an essentially vertical position. For support designs not specifically shown on the plans, demonstrate, to the Director’s satisfaction, that supports are structurally equivalent to the specified design. Do not use concrete grouting in the space between the foundation surface and support base. Conform to the requirements of AASHTO LTS -6 (Specifications for S tructural Supports for Highway Signs, Luminaires, and Traffic Signals, 2013) Section
C.5.17.5.2. Do not erect signal supports unless at least one signal, sign or damping device approved by the Engineer is installed within 24 hours.
632.16 Strain Pole. Furn ish strain poles for the attachment of messenger wire
with the required pole length. Use anchor base type strain poles. Adjust anchor base type poles with the initial rake so that when loaded the poles assume an essentially vertical position. Ensure that t he combination strain poles with light pole extension provide for the attachment of a luminaire bracket arm. Conform to the requirements of 630.06 for threaded fasteners, anchor bolts, anchor bolt nuts, and anaerobic adhesive.
632.17 Wood Pole. Set wood poles in holes excavated by an earth auger to a
minimum depth of 6 feet (1.8 m). Use an auger with a diameter approximately 4 inches (100 mm) greater than the pole butt. Hold poles with initial rake, up to a maximum of 12 inches (0.3 m), while tamping back fill into place, so that under messenger wire tensioning conforming to 632.22, the poles assume an essentially vertical position. Furnish backfill material no greater than 1 inch (25 mm) in size, and thoroughly tamp material in lifts not exceeding 6 inches (150 mm), to the satisfaction of the Engineer. If concrete embedment is specified, brace the poles until the concrete has set. 632.18 602 Liberally coat field holes bored for the attachment of messenger or guy wire with approved creosote base paint and fitted with 5 /8 inch (16 mm) thimble -eye through - bolts and 3 inch (75 mm) washers. Securely attach and protect ground wire furnished as part of another work item with a wood or plastic molding for a minimum distance of 10 feet (3 m) above groundline.
632.18 Down Guy Assembly. Install and tension guy assemblies before
erecting signals such that they will resist the major portion of the horizontal loading caused by loading of the messenger wire.
632.19 Pedestal. Furnish pedestals for the support of traffic control equip ment
with a cast or plate steel base, unless a transformer type base is specified.
632.20 Conduit Riser. Attach risers to poles to provide a wiring raceway and
include a weatherhead, conduit, necessary fittings, and pole attached clamps. Attach risers to p oles by clamps spaced at intervals not exceeding 5 feet (1.5 m). Paint conduit risers mounted on painted poles to match the poles.
632.21 Cable Support Assembly. Use cable support assemblies to eliminate
strain on cables, or groups of cables up to a maximu m of four, entering the interior of poles through a weatherhead or mast arm. If required, include a length of messenger wire forming a sling with ends formed of lapped wire, thimbles, and clamps as part of the assembly.
632.22 Messenger Wire. Arrange messe nger wire with accessories between
two or more poles to provide support and attachment for traffic control equipment. Accessories used with messenger wire include bullrings, thimbles, preformed guy grip dead ends, and three bolt clamps. Furnish bullrings a t messenger wire network corners. Use thimbles to attach messenger wire to the shackles of strain pole clamps and bullrings. Adjust the length of the messenger wire under the load of traffic control equipment so the sag at the lowest point is not greater t han 5 percent or less than 3 percent of the span. Attach signal cable to messenger wire with lengths of preformed helical lashing rod that are of a proper internal diameter to tightly secure the cable to the messenger wire. Attach interconnect cable with p reformed lashing rod or spinning wire. 632.225 Tether Wire. Arrange tether wire with accessories to stabilize signal heads and prevent excessive swinging and twisting. Install shim washers on hanger pin adjacent to wire entry to prevent any twisting of the head on the hanger. Accessories included with tether wire shall be those shown in the appropriate Plan Insert Sheet or Standard Construction Drawing and include pole clamps, anchor shackles, S -hooks yielding element, thimbles, turnbuckles, guy grips, wire rope clips, backup ties, lock wire, safety tie wires, and signal head tether anchors and extenders. Adjust the tether span to be horizontal on simple spans. On all spans, install tether horizontally and tighten with turnbuckles. Bull Rings will be used a t all internal corners of the tether span. Safety ties shall be installed at all yielding (S -hook) locations to prevent the span end from dropping into the roadway if the S -hook opens. No electrical or communication cables of any kind shall be attached to the 632.23 603 tether wire. No signs or other devices shall be suspended from or attached to the tether wire. Turnbuckles shall be tightened by hand to achieve the tether wire tension shown in appropriate Plan Insert Sheet or Standard Construction Drawing. Measure tether tension with Loos & Co., Inc. Model PT -2 or approved equal. Record tension test results and present written copy to the Engineer.
632.23 Cable and Wire . Fashion cable at traffic signal equipment weatherhead
entrance fittings into a drip loop that ext ends at least 6 inches (150 mm) below the entrance. Do not allow the cable to chafe on the equipment. Support cables installed in strain poles and signal supports with cable support assemblies according to 632.21. Do not use splices in any cable or wire, e xcept at the following locations:
A.At the junction of detector wire and lead -in cable.
B.At the junction of power cable and the power supply source or service cable.
C.On long lengths of interconnect or service cable. For splices allowed in aerial inst allations, accomplish splicing in weather tight splice enclosures. For splices allowed in underground installations, accomplish splicing in pull boxes or poles where the splice is encapsulated with poured waterproof epoxy insulation according to 725.15. Install signal cable between signal heads and controller cabinets. Signal cables shall not be stripped beyond a length necessary to attach individual conductors within the signal head . The jacket shall extend into the signal head enclosure. Install intercon nect cable between controller cabinets of different intersections. Route signal and interconnect cable by aerial installation supported by messenger wire or within underground conduit. If specified, use aerial self -supporting integral messenger type interc onnect cable with a figure “8” cross -section and include pole clamps and splice enclosures. Ground the supporting messenger wire of interconnect cable. Provide loop detector wire consisting of detector wire inserted into flexible plastic tubing. Use of fac tory-manufactured preformed loops is permitted. Ensure that the tubing encases the wire continuously from the splice at the lead -in cable, through the entire loop turns, and back to the splice. Install loop detector wire in sawn roadway slots forming loops according to 632.11. Furnish the required number of turns of wire installed for each loop, and push the wire carefully into the slots with a blunt tool to avoid damaging the tubing. Run the wire continuously around the loop perimeter and through a slot le ading to the pavement edge and by underground conduit to a roadside pull box or pole with 5 feet (1.5 m) at each end for slack and splice. Uniformly twist wires and tubing installed in the conduit to the splice with lead -in cable at 3 to 5 turns per foot ( 10 to 16 turns per meter). Splice the loop ends to lead -in cable, which is connected to the controller cabinet. Join the wires by a mutually twisted in -line splice, rosin core soldered, and wrapped in vinyl or equivalent electrical tape, and encapsulate wi res with an approved poured waterproof epoxy insulated splice according to 725.15. Extend and seal the tubing ends into the poured epoxy splice. Also, solder crimped terminals to the conductors and the shield for connections inside the cabinet. 632.24 604 Install power cable from the power supply source to the controller cabinet. If multi -conductor power cable is specified, the Contractor may substitute multiple single conductors. Install service cable aerially from a remote power source to the vicinity of the controller cabinet with the support cable functioning as the electrical neutral. Furnish connections used with aluminum power or service cable of an approved type for aluminum to aluminum or aluminum to copper connections, and insulate connections with an appr oved vinyl mastic pad.
632.24 Power Service. Furnish and install all equipment necessary to provide
complete electrical service to each signal installation as shown on the plans. Make all necessary arrangements with the local electrical power company for c onnections to establish electrical service. Charges made by the power company for establishing of the account, extension of company facilities, connection of customer equipment to the power company facilities and energy will be borne by the maintaining age ncy. Power service consists of equipment to provide a pole attached wiring raceway and disconnect switch for use with power cable routed from the service entrance to the controller cabinet. The power service installation includes a weatherhead, conduit and fittings, a disconnect switch with enclosure, meter base and attachment clamps. It also includes the intersection lighting disconnect and associated equipment when intersection lighting is present. Bend the conduit away from the pole at the top and bottom of the riser to allow the conduit to enter straight into the enclosure or meter base hub, and to provide space for the weatherhead when the riser is pulled tight against the pole. Furnish watertight conduit connections between the meter base and enclosure by using conduit hubs listed on the enclosure UL label. Furnish each enclosure with at least one padlock. Use padlocks with a bronze or brass lock body and a corrosion protected steel shackle. Obtain the appropriate master key number from the maintaining agency. Paint conduit risers mounted on painted poles to match the poles.
632.25 Covering of Vehicular and Pedestrian Signal Heads. Cover vehicular
signal heads if erected at intersections where traffic is maintained before energizing the signals. Cover pe destrian signal heads when specified in the plans. Use a sturdy opaque covering material specifically made for use with traffic signals, and ensure that the color of the cover is different than the signal head, tan or beige, so that it is clear to drivers and pedestrians the heads are covered, not dark, Use a method of covering and cover attachment and materials as approved by the Engineer. Covers are to be free of text, pictures, or any type of advertising. . Maintain covers, and remove them when directed by the Engineer. Completely cover the entire signal head, including backplates with reflective borders in such a manner that the reflective borders are not visible.
632.26 Removal of Traffic Signal Installation. Remove signal heads, cable,
messenger wire, strain poles, cabinet, controller, or other incidental items required by the Engineer. Remove support foundations to at least 1 foot (0.3 m) below subgrade or finished groundline. Backfill, restore surfaces, and dispose of surplus 632.27 605 material according to 1 05.16, 105.17 and 611.15. Store removed items on the project for salvage by the maintaining agency, or reuse removed items as part of a new installation on the project under another item of work. Dispose of all items not designated for salvage or reuse. As specified in 614.03, do not remove signals until a new signal system or a temporary traffic control method approved by the Engineer is in operation. Suitably protect stored equipment.
632.27 Reuse of Traffic Signal Equipment. Reinstall or re -erect specifi ed
traffic equipment, removed from existing signal installations within the project. Clean and restore reused equipment to an operating condition. Furnish all additional hardware and incidentals necessary to allow reuse of the equipment.
632.28 Testing.
A.General. Furnish all personnel and equipment required to successfully perform the following tests, and furnish to the Engineer six certified copies of complete test records, test reporting forms supplied by the Engineer, or alternate certification approve d by the Engineer.
B.Ground Test. Measure each ground rod for earth resistance according to 625.19, except that measurements are not necessary immediately after installation.
C.Short -Circuit Test. Before performing any cable insulation tests or performance test, perform a short -circuit test with a volt -ohmmeter or other approved instrument. Conduct short -circuit tests with electrical loads, power sources, equipment grounds, and earth grounds disconnected. Test signal cable routed to signal heads with connections made to lamp sockets without lamps installed. Measure each conductor against every other conductor and ground to ensure that no short -circuits, cross -circuits, or other improper connections exist. Ensure that continuity does not exist betw een any conductor and another conductor including ground.
D.Circuit Continuity Test. Temporarily jumper each circuit branch at its termination and the temporarily looped circuit measured for continuity to ensure that no open circuits exist, that the circu it branch is according to plan, that no high resistance connections exist, and that each circuit is properly identified. Test the lead-in cable for loop detector wire before and after splicing the cable to the loop wire. As an alternative, perform the circ uit continuity testing of signal head cable by applying 120 volts to each outgoing circuit and observing that only the proper lamps are lighted.
E.Cable Insulation Test . Ensure that the insulation resistance measured to ground is not less than 10 megohms for each conductor of cable or wire terminating at the controller cabinet. Perform insulation testing with all conductors disconnected from their points on the terminal blocks. Measure insulation resistance for the wire of roadway loops after the embedding of the wire with sealant in slots. Include a list of the resistance readings for each conductor in the test results. After completing the cable insulation test, connect all cabinet wiring according to the wiring diagram. Demonstrate to the satisfaction of the Engineer that all circuits are continuous and operating correctly with freedom from shorts, crosses, and unintentional grounds.
F.Functional Test. Before the 10 day performance test begins, make the following checks and demonstrate to the Engineer t hat the system is ready for the 632.29 606 performance test. Ensure that the incoming AC voltage is a nominal 120 volts. If the supplied voltage under load is less than 100 or more than 130 VAC, contact the power company to arrange correction. Ensure that the cabinet ventilating fan, fan thermostat, and convenience outlet with lamp is operational. Verify correct timing settings on the controller as shown on the plans. Check all cabinet switches including the power on/off switch and flash switch. Check all controller f unctions to verify correct operation. Check the detector units to determine which pavement loop is associated with which detector unit. Check the visual call strength indication of detector units to determine that each vehicle class (truck, car, motorcycle , and bicycle) entering sensor areas is detected on the associated detector unit and that no extraneous calls occur when the sensor area is vacant. Occasional extraneous calls may be permitted by the Engineer if necessary to assure detection of small vehic le targets (bicycles and motorcycles). Check the flash switch to verify transfer of signal operation to flash and return to stop -and-go. Check the conflict monitor to verify that it is not activated by normal signal operations or by the manipulation of cab inet switches. If the monitor is activated, determine the cause of the problem and make appropriate changes and adjustments before beginning the performance test. Test the conflict monitor by artificially causing a number of different conflicting indicatio ns, and verify that at each test the monitor causes the signals to begin flashing and places the controller in a “stop timing” mode. Obtain artificial causation either by touching a jumper wire between two conflicting load switch outputs or by other method s approved by the Engineer. Ensure that the signal flashes when the monitor is disconnected.
G.Performance Test. At least 7 days before the performance test begins, notify the Engineer of the starting date. The Engineer will notify the maintaining agency. Before acceptance, operate the traffic control system continuously for 10 consecutive days without major malfunction or failure. Immediately replace or repair minor failures (such as lamps, a single detector unit, or an individual signal head, etc.) that do not cause restart of the test. Major malfunctions or failures (such as a master or local controller, interconnect equipment, etc.) will cause termination of the test and, after replacement or repair, the beginning of a new 10 -day test. Monitor items tha t have been repaired or that are replacements for a 10 -day period to provide assurance of their reliability. Record, for inclusion in the test result, the method and date of correction of each fault, and the beginning and end of the test.
632.29 Method of Measurement. The Department will measure Vehicular
Signal Head and Pedestrian Signal Head by the number of complete units, and will include all support or mounting hardware, disconnect hangers, closure caps, dimmers, and lamps as required. Optically programmed heads shall include programming. For programming purposes, 8 -inch (200 mm) programmed heads shall include one extender tool per project. The Department will measure Pedestrian Pushbutton by the number of individual units, and will include pedest rian pushbutton signs. The Department will measure Loop Detector Unit by the number of individual units, adjusted and tuned, and will include a wiring harness. If multi -channel detector units are used, the Department will consider each channel as an indivi dual detector unit up to the number of units specified. 632.29 607 The Department will measure tether wire by the number of feet (meters) in place, and will include all necessary accessories such as pole clamps, safety tie clamps, anchor shackles, S -hooks yielding el ement, thimbles, turnbuckles, guy grips, wire rope clips, lock wire, safety tie wire, lead sheet, and signal head tether anchors and extenders in accordance with the applicable Plan Insert Sheet or Standard Construction Drawing. The Department will measure from pole center to pole center, or pole center to bullring, or bullring to bullring. The Department will not measure any length of tether wire for attachment to poles or bullrings by bending, lapping or wrapping. The Department will measure Detector Loop by the number of complete detector loops installed in the pavement, and will include pavement cutting, loop detector wire with tubing in place, application of sealant, conduit, trenching, backfilling, and surface restoration from the edge of pavement to the pull box. The Department will measure Strain Pole Foundation, Signal Support Foundation, and Pedestal Foundation by the number of complete units, and will include excavation, dewatering, sleeving, casing, reinforcing steel, concrete, backfilling, dispo sal of surplus excavation, and installation only of anchor bolts and conduit ells. The Department will measure Signal Support, Combination Signal Support, Strain Pole, Combination Strain Pole, Wood Pole, and Pedestal by the number of complete units of each , and will include pole arms, weather -heads and blind half couplings, anchor bolts and conduit ells furnished for foundations. The Department will measure the Luminaire Bracket Arm for each bracket arm for Combination Signal Supports and Combination Strain Poles. For combination strain poles, the luminaire bracket arm will be a separate item. For combination signal supports, the luminaire bracket arm will be a separate item . The Department will measure Down Guy by the number of individual units, and will in clude messenger wire, pole clamp or thru -bolt, washer, clamps, guy grips, insulator, guy guard, and anchor. The Department will measure Conduit Riser by the number of complete units, and will include weatherhead, conduit, fittings, clamps, and hardware. The Department will measure Messenger Wire by the number of feet (meters) in place, and will include all necessary accessories such as, grips, thimbles, clamps, bullrings, and lashing rod. The Department will measure from pole center to pole center, or pole center to bullring, or bullring to bullring. The Department will not measure any length of messenger wire for attachment to poles, or bullrings by bending, lapping, or wrapping. The Department will measure Signal Cable, Interconnect Cable, Loop Detector Lead-In Cable, Power Cable, and Service Cable by the number of feet (meters) in place. Cable inside of poles shall include cable support assemblies. Aerial cable shall include pole attachment hardware, splices, splice enclosures, and ground connection. Lead -in cable shall include poured epoxy insulated splices. The Department will measure: (1) horizontally from center -to-center of pull boxes, poles, cabinets, power sources, and signal heads with an additional allowance of 5 feet (1.5 m) at each pull box and t erminating points for slack and connections; and 632.30 608 (2) vertically between pole or conduit outlets. If single -conductor power cable is substituted for multi -conductor cable, the Department will measure required length of multi -conductor cable. The Department will measure Power Service by the number of complete units, and will include weatherhead, conduit, fittings, clamps and other necessary hardware, installation of meter base, ground wire connection, and disconnect switch(es) with enclosure and padlock. The Department will measure Covering of Vehicular Signal Head and Covering of Pedestrian Signal Head by the number o f individual signal heads covered, and will include materials and labor to erect, maintain, and remove the covering. The Department will measure Removal of Traffic Signal Installation by the number of installations removed, and will include storage when required. The Department will measure Removal of ( Item) and ( Storage or Reerection ) by the number of specific traffic signal installation parts (s uch as a signal head, controller unit, or pole) removed, and will include storage when required. The Department will measure Reuse of ( Item) by the number of traffic signal equipment items reused, and will include cleaning, restoring, and relamping.
632.30 Basis of Payment. The costs to arrange service by the supply agency are
included under Power Cable. The costs of personnel, materials, equipment, electrical energy, and incidentals required to conduct performance tests are included under the contract unit price for the respective items tested. The Department will pay for accepted quantities at the contract prices as follows: Item Unit Description 632 Each Vehicular Signal Head, (Yellow or Black), (Aluminum or Polycarbonate), ___ Section ___ inc h (___ mm) Lens (with Backplate) 632 Each Vehicular Signal Head, Optically Programmed, (Yellow or Black), (Aluminum or Polycarbonate), ___ -Section, ___ inch (___ mm) Lens, (with Backplate) 632 Each Pedestrian Signal Head, (Aluminum or Polycarbonate) (Countdown), Type ___ 632 Each Pedestrian Pushbutton 632 Each Loop Detector Unit 632 Each Detector Loop 632 Each Strain Pole Foundation 632 Each Signal Support Foundation 632 Each Pedestal Foundation 632 Each Signal Support, Type TC -___, Design ___ 632 Each Combination Signal Support, Type TC -___, Design ___ 632 Each Strain Pole, Type TC -___, Design ___
Source: Ohio Construction and Material Specifications, 2019 Edition. Pages 0–0 of 928.