730.03 Construction.
TRAFFIC SIGNALS
730.01 Description.
This Section shall cover the work of furnishing and installing of traffic signal control equipment. These requirements may be supplemented or amended by the requirements given elsewhere in the specifications, or on the plans and Special and Standard Highway Drawings. Descriptions and definitions of the equipment, words and termi nology used in the furnishing and installing of traffic signal control equipment are given in the Manual of Uniform Traffic Control Devices (MUTCD) publications of the Institute of Transportation Engineers (ITE), the National Electrical Manufactures Associ ation (NEMA), the National Electrical Code (NEC), and the International Municipal Signal Association (IMSA).
730.02 Materials.
All materials furnished for use shall conform to the requirements given in Section 890, shown on the plans, or listed in the ALDO T “Materials, Sources, and Devices with Special Acceptance Requirements Manual” (MSDSAR). All furnished materials and equipment shall be new and free from defects. Existing equipment shall only be used if shown on the plans to be re -used.
730.03 Constructi on.
a.Design and Construction Codes and Coordination of the Work .
1.Codes . All installations shall comply with the regulations of the latest edition of the National Electrical Code and the latest edition of the National Electrical Safety Code, and with the service rules of the Utility Company providing the electricity.
2.Structure Design and Construction . Structures for the support of traffic signal control equipment shall be designed, furnished, and installed in accordance with the requirements gi ven in Sections 718 and 891.
3.Coordination of the Work . Coordination of the work with roadway and bridge work will be of prime importance to prevent undue damage to completed items of work and existing facilities. Any damage to existing facilities caused by the installation of the material or equipment required under this Section shall be repaired by the Contractor at no additional cost to the Department.
4.Electrical Power . The entity that will be responsible for the eventual operation and maintenance o f the traffic signal unit and intersection lighting will make application for electrical service upon notification that power service will be required. The Contractor shall inform the Engineer when power service is required at least 30 calendar days prior to the need of the power service. This same entity will be responsible for the cost of the service connection and the monthly service billings thereafter. Power shall be single phase, 240 Volt, provided through a transformer that is not tapped to provide power to any other equipment.
b.Traffic Signal Technician . Technician(s) responsible for the performance of the work shall be certified by the IMSA as an IMSA Traffic Signal Level II Field Technician. The Contractor shall submit a copy of the IMSA certification to the Engineer with the first Material Submittal that is submitted for approval. The technician(s) shall be in possession of the certification at all times and show this certification as often as asked by the Engineer. Certified Traffic Signal Technicians shall be present and shall have direct involvement with all work required for the installation and operational testing of electrical materials and equipment (conduit, boxes, conductors, etc.). At least one out of every three persons in a cr ew shall be a certified IMSA Traffic Signal Level II Field Technician.
c.Drawings and Specifications . Omissions from the plans and specifications or errors in the details of work which are evidently necessary to carry out the intent of the plans and spe cifications or which are customarily performed, shall not relieve the Contractor from performing such omissions and details of work. In any case of
730.03 Construction.
discrepancy in descriptions on the plans or in these Specifications, the matter shall be promptly submitted to the Engineer, who will make a determination in writing. Any adjustments in the plans, details, specifications, and proposal by the Contractor without written permission of the Engineer shall be at the Contractor’s own risk and expense.
d.Material and Equipment Lists, Shop Drawing and Approval . Material and equipment listings shall be submitted to the Design Bureau’s Traffic Design Section for approval within 30 days after the issuance of the "Notice to Proceed". Partial listings and shop drawings will not be accepted for consideration and shall be returned for correction without review. Five copies of each submittal shall be furnished for review. Material and equipment lists shall include catalog cutouts or published data sheets and shall be completed on the Department’s Material Submittal Form The submittal form shall have each item sequentially numbered, a reference to the Specification Section and/or plan sheet, and a description of the material. The description shall include the type, model number, catalog number, and manufacturer, and shall include a legible manufacturer’s catalog cut sheet with each item being submitted clearly identified. All individual components of assembled equipment (cabinets, controllers, etc.) shall be itemized on the submit tal form. Submittals shall be clear and complete. Pay Items are not to be referenced on the form. Unacceptable items on the submittal form will be returned for corrective action. A copy of the approved material and equipment listings will be returned to th e Contractor. Any changes to the approved material and equipment lists must be requested in writing through proper channels. If requested by the Engineer, the Contractor shall submit for inspection and approval samples of both the specified and proposed su bstitute items at no cost to the Department. The Department will not be liable for any materials purchased or work done or any delay incurred before such approval. Failure of the Engineer to note unsatisfactory material as received will not relieve the Con tractor from responsibility. Manufacturers' warranties and guaranties furnished on equipment used in the work shall be delivered to the Engineer; likewise, instruction sheets and parts lists shall be delivered to the Engineer upon receipt of the equipment. Throughout the entire project, the same manufacturer shall make all units of any one item, such as poles, signal heads, detectors, controllers, cabinets, etc. Reference to a particular product by manufacturer, trade name, or catalog number establishes the quality standards of material and equipment required for this installation and is not intended to exclude products equal in quality and similar in design. Whenever any article, material, or equipment is defined by using the name of a manufacturer or vendo r, the term "or approved equal" if not inserted, shall be implied.
e.Approved Traffic Control Devices and Materials . Some materials and equipment required to be furnished under this Section will be standard production type products. Acceptance will be ma de by the Engineer based on selected confirmation tests, the manufacturer's certification of the materials and equipment, and visual inspection at the job site. The manufacturer shall make available to the Department test data and material samples from the production runs for use in evaluation of these items. Title 32, Chapter 5A, Subsection 36 of the Code of Alabama states that all traffic control devices shall be approved by the Transportation Director before they can be used, sold, or offered for sale. A pproved devices are shown on the Department's MSDSAR .
f.As-Built Drawings . After all equipment has been installed and the operational check has been initiated , the Contractor shall submit a set of plans showing in detail all changes on construction from the original plan details with special notation given to conduit location and elevation and schematic circuit diagrams.
g.Operational Manuals . Operation manuals and as- built wiring diagrams shall be furnished for all equipment and accessories required in the controller cabinet. These manuals and wiring diagrams shall be mounted to the cabinet in an appropriate manner. In addition, two copies of these manuals and wiring diagrams shall be transmitted to the Department's Area Traffic Engineer.
h.Pre-Installation Test (Bench Test). Before the installation of the traffic control system(s) or unit(s), the Contractor shall perform an equipment bench test. This test shall include all controllers, monitors, and other cabinet equipment as required under sign al load conditions for a minimum of seven consecutive days.
730.03 Construction.
The Contractor shall secure an acceptable site, approved by the Engineer, for the bench test and shall perform all work required in the performance of the test. The Contractor shall notify the Eng ineer of the date that the test is to begin a minimum of seven days before that date. The Engineer will schedule an inspection of the equipment with the Area Maintenance Engineer in coordination with the State Signal Shop. The bench test shall not begin until the Area Maintenance Engineer has given approval after the State Signal Shop has verified and inspected the equipment to be used. None of the equipment shall be installed on the project until the bench test has been completed and the Contractor has su bmitted a letter to the Engineer certifying that the equipment performed satisfactorily during the test. Any equipment failure during this time shall be corrected, and the bench test time shall be restarted. There will be no direct payment to the Contracto r for the cost of the pre-installation test including the cost of a suitable test site and the setting up of equipment for the test.
i.Removal of Equipment . All equipment designated or directed to be removed shall be removed in such a manner that the removed equipment will not be damaged. Any damage due to negligence on the part of the Contractor because of lack of proper care of equipment shall be cause for the Engineer to order its replacement. The cost of replacement shall be borne fully by the Contrac tor. Any equipment or materials not authorized by the Engineer for re- use into a new facility shall be stored by the Contractor until the Engineer directs that they be delivered by the Contractor to the Department at the time and location designated by the Engineer. Storage facilities shall be provided so that the equipment will be protected from the elements and damage by vandalism.
j.Concrete Foundations . The Engineer will inform the Contractor of the exact diameter and depth of concrete foundation required at each signal pole foundation. The Engineer will also inform the Contractor of any changes that are required to the size and number of reinforcing bars required at each signal pole foundation. This information will be given to the Contractor at the c ompletion of the review of the Contractor's submittal of designs and details of the signal pole structures. All conduit systems, elbows, etc., shall be installed securely and inspected by the Project Manager before concrete is poured. The Contractor shall contact the utility companies to determine the location of underground utilities in the area where the foundations are to be located and shall be responsible for repairing, to the satisfaction of the utility company, any damaged utilities.
k.Abandoning Foundations . All foundations, when abandoned, the top of the foundation, anchor bolts frame and conduit shall be removed to a depth of not less than 12 inches { 300 mm} or as directed below the surface of existing pavement. The resulting hole shall be backf illed with material to match the existing surface.
l.Interconnect Cable .
1.General . Interconnect cable wire shall be installed at locations as shown on the plans or as directed by the Engineer. Splices shall be made only where shown on the plans or in t he controller cabinet. A minimum of 6 feet {1.8 m} or as directed, of slack shall be provided at each cabinet.
2.Underground Interconnect Cable. Underground interconnect cable shall be run in conduit.
3.Aerial Interconnect Cable. Aerial interconnect cable shall be supported on new or existing utility poles and/or signal poles as shown on the plans. Interconnect support cable wire supporting signal control cable only will be sagged to a vertical distance not greater than 2 percent of the length of the spa n between poles. When support cable is not an integral part of the interconnect cable, interconnect cable shall be attached to a support wire.
m.Electrical Power Service Assembly . The location of the utility service point and power source shown on the Si gnalization Plans is approximate. The Contractor shall determine the exact location.
730.03 Construction.
When the service equipment is to be installed on a utility -owned pole, the C ontractor shall furnish and install conduit, photoelectric control unit, conductors, and other necessary material to complete the installation of the service. The position of the riser and equipment will be determined by the utility. When a lateral drop is required from the power source to the service pole, the Contractor shall arrange with the serving utility to complete the service connections. The Contractor shall install the conduit, conductors, enclosure and accessories, and service pole. As a minimum, the electrical power service equipment shall consist of: • A weatherhead; • 1 inch {27 mm} metallic conduit from weatherhead to a disconnect switch; • A disconnect switch installed 6 feet {2 m} high, including, but not limited to the enclosure, load center complete with circuit breaker in a nema type 4 enclosure, masterlock size #3, key #3210 (for statewide uniform access) ; • 1 inch {27 mm} metallic conduit from disconnect switch to a designated depth below the ground line; • Attachment hardware; • Ground rod and related equipment; • Service cables; • No. 8 awg service cable for any required luminaires; • Attachment to local utility; • All incidentals required to provide power service to the controller assembly and luminaires.
n.Span Wire . The installation of span wire shall meet all provisions of the National Electric Safety Code (ANSI - C2) regarding clearance from electric lines. The length of the messenger wire shall be adjusted under the load of traffic control equipment so that the sag at the lowest point shall not be greater than the requirements in Section 718.
o.Vehicular and Pedestrian Signal Heads . Vehicular or pedestrian signal heads shall not be installed until all other signal equipment, including the controller, is in place and ready for operation except that signal heads may be installed if no face of the head is directed toward traffic or if the entire assembly is hooded. Each signal face shall be so adjusted vertically and horizontally in order that its beams will be of maximum effectiveness to the approaching traffic for which it is intended. All required vehicular signal heads shall i nclude a backplate with a 2 inch{5 cm} fluorescent yellow border unless otherwise directed by the Engineer or shown on the plans.
p.Traffic Detection Systems .
1.Inductive Loop .
a.Installation of Loop Wire. Before cutting required loops into the paveme nt, any existing loops that are not quadrupole loops shall be sawed in two locations and quadrupole loops shall be sawed in three locations on the long side to prevent false readings when the required loops are placed into the pavement. Loop wire outside t he sawcut shall be twisted 3 turns per foot. Loop wire shall be one continuous run without splices. Loop wire shall be pushed to the bottom of the saw cut with a non- metallic tool that will not damage the insulation. Each loop wire shall be placed in its o wn individual sawcut to the edge of pavement . No portion of the loop shall be located within 3 feet {1 m} of any conductive material in the pavement such as manhole covers, water valves, and grates, etc. After installation of the loops, the slots shall be sealed with an approved sealant manufactured specifically for embedding loop detector wire in concrete or bituminous pavements. All loop connectors shall be connected to a shielded home- run cable located in junction box or when so directed or show n on plans at base of traffic signal strain pole. Preformed loops that are listed on the MSDSAR may be used.
b.Sawcuts for Loops. Slots for installing the loops shall be formed by sawing with approved equipment designed for sawing pavement, to the width a nd depth indicated by the plan details or directed.
730.03 Construction.
The slot shall be cleaned of all foreign loose debris using compressed air or other approved means before installation of the loop wires. Sawcut corners shall be cut at a diagonal. No sharp bends shall be accepted. Loops shall be tested prior to sealing sawcuts. Loop sealant shall be placed in sawcuts in accordance with manufacturer’s recommendations. Loop sealant will not be permitted when there is moisture on the surface, the air temperature is below 40 ° F {4.4 °C}, or other conditions exist that in the opinion of the Engineer would affect the bonding of the material.
c.Loop Detector Lead- In. A separate run of shielded home -run cable shall be provided for each loop unless otherwise directed by the Engine er. Lead- in cable installed underground shall be in conduit. The lead -in shall be one continuous run from controller to loop connection with no splices.
d.Testing Loops. The Contractor shall perform a leakage to ground test on all loops using a MEG -OHM me ter with 500 V applied. The loops shall also be tested after the lead -ins are pulled to the amplifier to detect any damage done during installation. A State Inspector will perform this same test to check for leakage. Any loop failing to read 100 MEGS or be tter shall be replaced by the Contractor at no additional cost to the project.
2.Video Detection System (VDS). The Contractor shall furnish and install all equipment, materials, software and other miscellaneous items that are required to provide a fully f unctional Video Detection System for the control of vehicular and pedestrian traffic signals. The Contractor shall establish the configuration of the required traffic detection zones within each controller cabinet up to a maximum of 26 detection zones per controller. The Contractor shall notify the Engineer prior to software configuration and detector zone setup in ample time to allow the Engineer to observe this work. There will be no additional payment made for the relocation of cameras that may be requi red to achieve the required configuration. The VDS shall detect the presence of a vehicle in the zones with at least 95 % accuracy at any time during the day. The Contractor shall have a qualified representative of the supplier of the VDS to be present at the site of the installation to verify that all equipment and materials are being installed correctly. The representative of the VDS supplier shall be available to address all issues of concern that the Engineer may have. All coaxial cable and power cable shall be one continuous pull without splices between the camera mounting location and the traffic controller cabinet.
3.Radar Detection System. The Contractor shall establish the configuration of the required traffic detection zones within each controlle r cabinet. The Contractor shall notify the Engineer prior to software configuration and detector zone setup in ample time to allow the Engineer to observe this work. There will be no additional payment made for the relocation of the microwave sensors that may be required to achieve the required configuration. All communication, data, and power cabling shall be one continuous pull without splices between the radar mounting location and the traffic controller cabinet or wireless relay point.
4.Magnetometer D etection System. The Contractor shall install the required traffic sensors in the roadway to produce the required vehicular detection for each location/zone. Sensors that communicate via a hard- wire connection shall be spliced in the junction box using an approved, water tight splice kit to the home -run cable, without splices, back to the cabinet. For wireless sensors, the Contractor shall verify the communication of the sensors to the system to ensure the sensors are set -up properly before connecting the system to the controller. The Contractor shall notify the Engineer prior to software configuration and detector setup in ample time to allow the Engineer to observe this work. There will be no additional payment made for the relocation or addition of sen sors that may be required to achieve the required detection.
730.03 Construction.
5.Pedestrian Push -Button System. The Contractor shall install the required pedestrian push- buttons in accordance with the locations shown on the plans. These devices shall be tested to ensure that they are working properly before connecting them to the controller.
6.Priority Control Detection System, Traffic Signal Preemption . A priority control detection system shall provide communication to the traffic signal controller that will allo w the controller to run a modified signal timing plan to allow an emergency vehicle or another priority vehicle to pass through a roadway intersection with as little delay as possible. The priority control system shall be either acoustically (sound) activ ated, optically activated, or GPS (Global Positioning System) activated. The system shall include all mounting hardware, wiring, detection sensors, signal control devices and miscellaneous materials required to provide a fully functional priority control s ystem for traffic signal preemption. The system shall be capable of providing preemption information to the standard NEMA TS1, NEMA TS2, Type 170, and Type 2070 traffic controllers used by ALDOT. A four-hour training session shall be provided for as many as ten attendees. The Contractor shall arrange for the training to be provided by a representative of the manufacturer of the priority control detection system. Training shall be instruction in the proper installation, operation, maintenance, and programmi ng of the priority control detection system. A training course outline shall be submitted to the Engineer for approval by ALDOT Maintenance Bureau Traffic Operations Engineer. Training will not be scheduled by the Engineer until the course outline is appro ved. Training shall be performed both in the field and in the office. The Contractor shall schedule the training during the time frame designated by the Engineer. The Contractor shall provide a minimum of a seven -calendar day advance written notice of the scheduling of the training to allow the Engineer to arrange attendance. A training notebook shall be provided to each trainee in a labeled three -ring binder.
q.Installation of Conduit . Metallic conduit shall be used above ground and may be used below ground. Non-metallic conduit shall only be used underground. Where non- metallic conduits join metal conduits, connection shall be made using appropriate couplings to form a watertight raceway. All conduits entering concrete foundations shall be provided with appropriate bushings at the ends. Conduits shall be stubbed approximately 1 inch {25 mm} above concrete and shall be provided grounding type bushings on conduit ends in base of poles with copper bonding jumpers. Bends and offsets shall be avoided where possible, but where necessary, shall be made with a proper hickey, pipe bender, or conduit bending machine. Conduit that has been crushed or deformed due to improper bending or handling shall not be installed. Conduits shall be installed in a manner to e nsure against trouble from collection of trapped condensation where possible. Conduits shall be capped to prevent entrance of deleterious materials during construction. For underground conduit adjacent to gasoline service stations or other installations of u nderground gasoline or diesel storage, piping or pumps, and which lead to a cabinet, circuit breaker panel, service, or any enclosure where an arc may occur during normal operation, the Contractor shall refer to the National Electrical Code (NEC) for Class 1, Hazardous Locations. Conduit for future use shall be threaded and capped. All conduit installed under paved areas shall be encased. Encasement shall meet the requirements of Section 756 and shall be a Type 1, Type 2, or Type 5 installation as shown on the plans. If the Contractor should encounter extraordinary circumstances such as major utilities under existing pavement which the location cannot be accurately determined, he may request in writing permission to open cut a trench in lieu of jacking or b oring. This request shall also include detailed proposed sequence of excavating, backfilling, method of handling traffic, etc. for the Engineer's consideration. No such work shall be performed without written permission of the Engineer. All conduit systems shall be completely installed before the conductors are installed.
r.Luminaires . The light control surfaces and lens shall be cleaned after installation. Cleaning shall be performed in accordance with luminaire manufacture’s recommendations.
730.03 Construction.
Luminaire s shall be leveled, plumbed, and installed as per the manufacturer’s recommendations and as directed by the Engineer to achieve the most suitable light pattern.
s.Wiring Installation Requirements . Wiring within junction boxes shall be neatly arranged and laced. Powdered soapstone, talc, or other approved lubricant may be used in pulling cable in conduit. All cables within a single conduit shall be pulled at the same time. All ends of cable shall be taped to exclude moisture and shall be so kept until splices are made and terminal appliances attached. The ends of spare conductors shall be taped. All conductor splices that will be direct buried in earth and all loop detection conductor splices shall be soldered and encased in an approved splicing kit and with sealing tape. All other signal conductor splices shall be spliced using a twisted connection made by a suitable wire nut or crimp and then properly covered by insulating tape or other insulating materials.
t.Grounding Enclosures . All metal enclo sures containing electric wires and/or equipment shall be bonded to the chassis ground. Ground rods shall be installed at all service equipment and traffic signal pole foundations. Single ground rods shall be driven vertically until the top of the rod is at least 12 inches {305 mm} below the finished grade. Where a grounding conductor passes through a metal conduit, a suitable grounding bushing shall be placed on each end of the conduit and connected to a ground wire. Each messenger cable shall be attache d to the supporting structure with separate span wire clamps.
u.Excavating and Backfilling . All excavation required for the installation and placement of conduits, foundations, junction boxes, poles and other appliances shall be performed in such manner as to cause the least possible injury to pavement, curbs or other improvements. All conduits required under pavement, sidewalks, etc. shall be in place prior to commencing of base and paving operations. The trenches shall not be excavated wider than necess ary for the proper installation of the electrical appliance and foundations. Excavating shall not be performed until immediately before installation of conduit and other appliances. The material from the excavation shall be placed in a position where the l east interference with the surface drainage will occur. Should large rocks be encountered in conduit trenches, they shall be removed to a depth of 3 inches {75 mm} below the proposed elevation and replaced with a 3 inch {75 mm} layer of suitable material. All suitable material removed from the conduit trenches shall be used in backfilling of the trenches; however, no stone larger than 3 inches {75 mm} shall be in contact with any conduit. All surplus excavated material shall be removed from and disposed of by the Contractor, as directed by the Engineer. Excavations, after backfilling, shall be kept well filled and maintained in a smooth and well - drained condition until permanent repairs are made. Compaction shall be accomplished to the extent necessary to pr event future settlement of the backfill. The Contractor will be required to restore any areas disturbed by his work to their original condition without additional cost to the State.
v.Insulation, Circuit Continuity and Ground Resistance Testing .
1.Insul ation Testing . Isolation test for testing insulation resistance shall be performed for each conductor in the cable. Testing shall be made using Article 110 -19 of the NEC, as a guide. If resistance measured with all protective devices in place is less than 250,000 Ω, the contractor shall remove the defective cable, install new cable, and repeat the test. For interconnect cable, upon completion of run from one controller installation to the next controller installation, the Contractor shall conduct a test for insulation resistance in the presence of the Engineer.
2.Circuit Continuity Test . Each circuit branch shall be temporarily jumpered at its termination and the temporarily loop circuit measured for continuity to assure that no open circuits exist, that the circuit branch is
730.04 Me thod of Measurement.
according to plan, that no high resistance connections exist and that each circuit is properly identified. Each circuit shall be marked with typed labels. Lead -in cable for loop detector wire shall be tested before and after the cable is spliced to the loop wire. As an alternative, circuit continuity testing of signal head cable may be done by applying 120 V to each outgoing circuit and observing that only the proper lamps are lighted.
3.Ground Resistance Test . At each ground rod loca tion, a test shall be made. The effectiveness of the ground rod shall be determined by measuring resistance from the pole enclosure to a convenient underground water line, with a 0 -50 ohm megger where a water line is available and with auxiliary ground met hod where the water line is not available. The two auxiliary ground rods shall be not less than 50 feet and 100 feet {15 m and 30 m}, respectively, from the tested rod. If reading is greater than 5 ohms, additional rods shall be installed until a reading of 5 ohms or less is obtained.
w.Operational Check and Adjustment of Equipment . A full operational check of the installed traffic control system shall be performed under actual traffic conditions. Before the operational check is allowed to begin the Engin eer will arrange for an inspection of the installed traffic control equipment by the Maintenance Engineer in coordination with the State Signal Shop . The Engineer will obtain the approval of the Maintenance Engineer to begin the operational check. The period of operational check shall cover 30 calendar days. During the test period the Contractor shall expeditiously perform any necessary adjustment and replace any malfunctioning parts of the equipment required to place the system in an acceptable operational condition. Once repairs have been started, the Contractor shall have the traffic control equipment in an acceptable operational condition before leaving the project site. No extra compensation will be allowed for any work so required, such being c onsidered incidental to furnishing and installing a complete operational signal system. During the test period, time charges shall be suspended if all other work has been completed and acceptance of the work is dependent upon the results of the "operationa l check." The period of the test shall cover 30 continuous calendar days. In case of emergency or failure on the Contractor's part to expeditiously pursue repairs, the Department reserves the right to make such repairs as it deems necessary. The cost for t his work will be deducted from the contract bid amount for the project. The Department will not assume responsibility for the repairs or alter any of the requirements of the test period because of the repairs. The aforementioned shall in no way relieve the Contractor of his liability or responsibility related to maintaining the traffic signal as required by these specifications.
730.04 Method of Measurement.
a.Removal of Traffic Control Unit . The removal of all traffic control equipment at an intersectio n or other location designated on the plans will be measured as a Lump Sum, Removal of Traffic Control Unit. Removal of only some of the equipment will be measured as a Lump Sum, Removal of Traffic Control Unit (Partial). Removal of a temporary installatio n of traffic control equipment will be measured as a Lump Sum, Removal of Traffic Control Unit (Temporary). (Pay Item 730 -A)
b.Furnishing and Installing Traffic Control Unit . Where separate pay items are not listed for the traffic control equipment requi red at a single intersection or other location designated on the plans, all of the traffic control equipment will be measured for payment as a Lump Sum, Furnishing and Installing Traffic Control Unit.
c.Summary of Traffic Control Equipment Pay Items . Traffic control items of work will be measured for payment in accordance with the following: Pay items 730 -A, C, S, U and Y will be measured per lump sum. Pay items 730 -E, F, G, J, K, N, O, P, Q, R, and T will be measured per each. Pay items 730 -H, I, L, an d M will be measured per linear foot {meter}.
730.05 Basis of Payment.
a.Unit Price Coverage . Item 730 -A. The accepted work for the removal of existing traffic control units will be paid for at the contract unit price which shall be full compensation for the satisfactory removal and storage of the equipment and materials ordered removed, and shall include all equipment, tools, labor, services, storage facilities and incidentals necessary to complete the work.
730.05 Basis of Payment.
Item 730 -C. The furnishing and installing the traffic control unit will be paid for at the contract unit price, which shall be full compensation for the furnishing of the equipment, installation in accordance with these Specifications, plans, proposal, and details, and for all tools, equipment, labor, materials, operational facility connected to the local utility. Item 730 -E. A Metal Traffic Signal Pole Foundation will be paid for at the contract unit price (adjusted to account for changes in size and reinforcement) which shall be full compensation f or excavation, backfilling, forming, concrete, reinforcing steel, anchor bolts, ground rods, seeding and mulching of disturbed areas, disposal of debris and for all materials, labor, equipment, tools, testing, services and incidentals necessary to complete this item of work. The bid price shall be for a 3'- 0" {910 mm} diameter by 10' -0" {3.05 m} deep foundation. A larger foundation may be required. The reinforcing steel required for a larger foundation is shown on the plans. Compensation for a larger founda tion will be made in accordance with the following cost adjustments. COST ADJUSTMENT MADE TO BID PRICE FOR CHANGE IN FOUNDATION SIZE * ("+" plus figures are price increases) Foundation Depth Foundation Diameter 3'-0" {910 mm} 3'-6" { 1.07 m} 4'-0" {1.22 m} 10'-0" {3.05 m} $0 +$450 +$1200 11'-0" {3.35 m} +$100 +$600 +$1400 12'-0" {3.66 m} +$200 +$750 +$1600 13'-0" {3.96 m} +$300 +$900 +$1800 14'-0" {4.27 m} +$400 +$1050 +$2000 15'-0" {4.57 m} +$500 +$1200 +$2200 16'-0" {4.88 m} +$600 +$1350 +$2400 17'-0" {5.18 m} +$700 +$1500 +$2600 18'-0" {5.49 m} +$800 +$1650 +$2800 * Adjustments include compensation for changes to the reinforcing steel that are shown on the plans for larger foundations. The bid price adjustment shown above includes compensation for all work and materials (including reinforcing steel) necessary to construct the required foundation in accordance with the plan details. The Engineer may increase the amount of reinforcing steel from what is shown in the plan deta ils. When the amount of reinforcing steel is increased from what is shown in the plan details, the bid price will be adjusted. The adjustment will be $1.00 per pound {$ 2.20 per kg} for the amount of reinforcing steel that is increased. Item 730 -F. A Metal Traffic Signal Pole with Mast Arm Assembly will be paid for at the contract unit price which shall be full compensation for furnishing and installing the metal traffic signal pole and mast arm assembly and for all materials, equipment, tools, labor, servi ces, and incidentals necessary to complete this item of work. The required foundation shall be measured separately with payment being made under Item 730 -E. Item 730 -G. A Traffic Signal Pole will be paid for at the contract unit price which shall be full compensation for furnishing and installing the traffic signal pole, and for all materials, equipment, tools, labor, services, and incidentals necessary to complete this item of work. The required foundation shall be measured separately with payment being ma de under Item 730 -E.
1.Traffic Signal Pole (Wood Strain). A Wood Pole will be paid for at the contract unit price which shall be full compensation for furnishing and installing the wood pole, excavating, backfilling, attachment hardware, grounding, condui t (down to the base of the pole), weatherhead, guy wire, and for all materials, labor, equipment, tools, and incidentals necessary to complete this item of work.
2.Traffic Signal Pole (Type) (State Furnished). A State Furnished Pole will be paid for at th e contract unit price which shall be full compensation for delivery and installation of the traffic signal pole, and for all materials, equipment, tools, labor, services, and incidentals necessary to complete this item of work. The required foundation shal l be measured separately with payment being made under Item 730 -E.
730.05 Basis of Payment.
Item 730 -H. Loop Wire will be paid for at the contract unit price which shall be full compensation for the saw cutting, loop wire, loop sealant, trenching, backfilling, electrical connectio ns, splicing, and for all materials, labor, equipment, and tools to provide a complete and operational loop detector. Item 730 -I. Loop Detector Lead- In Cable will be paid for at the contract unit price which shall be full compensation for furnishing and installing the shielded home -run cable, including electrical connections and for all materials, equipment, tools, labor, testing, and incidentals necessary to provide a complete and operational detector loop. Item 730 -J. A Vehicle Loop Detector will be paid for at the contract unit price which shall be full compensation for furnishing and installing the loop detector amplifier, electrical connections and for all materials, equipment, tools, labor and incidentals necessary for a complete and operational loop detector amplifier. Item 730 -K. A Traffic Signal Junction Box will be paid for at the contract unit price which shall be full compensation for furnishing and installing the junction box, excavation, concrete , backfilling, and for all materials, labor, equip ment, tools, and incidentals necessary to complete this item of work. Item 730 -L. Conduit will be paid for at the contract unit price which shall be full compensation for furnishing and installing the conduit including fittings, trenching, placing, joining, attaching to structure, backfilling, seeding and mulching of disturbed areas, disposal of debris, and all materials, labor, equipment, tools and incidentals necessary to complete this item of work. Item 730 -M. Interconnect Cable will be paid for at the contract unit price which shall be full compensation for furnishing and installing the interconnect cable with the number of conductors and type as designated by the plans, including all hardware for aerial installation, connecting to controller assemblies , splicing, electrical connections, and for all materials, testing, labor, equipment, tools, and incidentals necessary for a complete and functional interconnect cable. Item 730 -N. A Luminaire Extension Assembly will be paid for at the contract unit price which shall be full compensation for furnishing and installing the luminaire arm, sodium vapor or LED luminaire, surge arrestor, connections, ground rod, No. 10 AWG, cable, and for all materials, labor, equipment, tools, and incidentals necessary for a complete and operational luminaire. Item 730 -O. Illuminated Sign Assembly will be paid for at the contra ct unit price which shall be full compensation for furnishing and installing a regulatory or warning sign with accompanying vehicular signal head or embedded flashing LEDs including all attachment hardware, connections, and for all materials, labor, equipm ent, tools, and incidentals necessary for a complete and operational illuminated sign. Item 730 -P. A Signal Head will be paid for at the contract unit price which shall be full compensation for furnishing and installing the signal head, trunnions, brackets , attachment hardware, backplate , connections, splicing, and for all materials, labor, equipment, tools, and incidentals necessary for a complete and operational signal head.
1.Signal Head, Vehicular. A backplate shall be furnished with a required vehicul ar signal head. The required backplate for existing signal head shall be measured separately with payment under Item 730 -Q. Item 730 -Q. Miscell aneous Equipment will be paid for at the contract unit price which shall be full compensation for furnishing and installing the equipment including any applicable attachment or mounting hardware, or wiring, and for all materials, labor, equipment, tools, and incidentals necessary for a complete piece of equipment that operates as the manufacturer intends or as otherwise indicated in the plans or specifications . Item 730 -R. A Controller Assembly will be paid for at the contract lump sum price which shall be full compensation for furnishing and installing the cabinet, controller unit, auxiliary devices, electrical devices, surge protection, terminals, concrete foundation or side mounting hardware, mounting and wiring of controller assembly, and for all materials, labor, equipment, tools, testing, and incidentals necessary for a complete and operational controller assem bly. Item 730 -S. Traffic Signal Preemption will be paid for at the contract lump sum price which shall be full compensation for furnishing and installing all mounting hardware, wiring, detection sensors, signal control devices, software (when required), testing and miscellaneous materials required to provide a fully functional priority control system for traffic signal preemption. If software and training is required it will be shown in the pay item description. Payment for training shall be full compensati on for training personnel, supplies, equipment, materials, user manuals, handouts, travel, and subsistence necessary to conduct the training. Item 730 -T. The furnishing and installation of the Electrical Power Service Assembly will be paid for at the contract unit price which shall be full compensation for furnishing and installing the wood
730.05 Basis of Payment.
pole (where required), excavating, backfilling, attachment hardware, grounding, weatherhead, guy wire, conduit (down to the base of the pole), photoelectric control unit, conductors, and other necessary materials, labor, equipment, tools, and incidentals necessary to complete this item of work.
1.Uninterruptable Power Supply Systems will be paid for at the contract unit price which shall be full compensation for fur nishing and installing the cabinet, auxiliary devices, electrical devices, terminals, concrete foundation or side -mounting hardware, mounting and wiring of the system, battery bank, inverter/converter, and other necessary materials, labor, equipment, tools , and incidentals necessary to complete this item of work. Item 730 -U. Detection Systems will be paid for at the contract unit price which shall be full compensation for the following systems:
1.Video Detection System. Cameras, lenses, enclosures, mounting brackets, video, communication, and power cabling, power supplies, lightning protection; manuals and documentation and for all labor, materials, tools, equipment, transportation and incidentals necessary for a complete and operational vehicle detection sy stem. The contract unit price shall also be full compensation for furnishing and installing the vehicle detection system processor, interface panel, and for all integration (including software setup and programming and adjusting detection zones).
2.Radar D etection System. Radar units, enclosures, mounting brackets, communication and power cabling, power supplies, lightning protection; manuals and documentation and for all labor, materials, tools, equipment, transportation and incidentals necessary for a complete and operational vehicle detection system. The contract unit price shall also be full compensation for furnishing and installing the vehicle detection system processor, interface panel, and for all integration (including software setup and programmi ng and adjusting detection zones).
3.Magnetometer Detection System. Magnetometers, communication equipment, enclosures, mounting brackets, communication and power cabling, power supplies, lightning protection; manuals and documentation and for all labor, m aterials, tools, equipment, transportation and incidentals necessary for a complete and operational vehicle detection system. The contract unit price shall also be full compensation for furnishing and installing the vehicle detection system processor, int erface panel, and for all integration (including software setup and programming and adjusting detection zones).
4.Hybrid Detection System. Combination Video/Radar units, enclosures, mounting brackets, communication and power cabling, power supplies, lightn ing protection; manuals and documentation and for all labor, materials, tools, equipment, transportation and incidentals necessary for a complete and operational vehicle detection system. The contract unit price shall also be full compensation for furnishing and installing the vehicle detection system processor, interface panel, and for all integration (including software setup and programming and adjusting detection zones). Item 730 -Y. Pedestal Pole and Foundation will be paid for at the contract unit price which shall be full compensation for the following:
1.Installation. Furnishing, fabricating, galvanizing, assembling and erecting a complete and operational roadside flashing beacon assembly, a complete and operational illuminated sign assembly, or a complete and operational pedestrian signal control assembly including , but not limited to signal head(s), illuminated or static sign(s), pedestrian pushbutton(s), cabinet, installing foundations, furnishing and placing anchor bolts and hardware , controlle r, wiring, power source , connection to local utility and equipment, materials, labor, tools and incidentals .
2.Relocation. Removing the flashing beacon assembly , illuminated sign assembly, or pedestrian signal assembly; removing existing foundations ; installing new foundations; furnishing and placing anchors; hardware; excavation and surface placement; furnishing, fabricating, and installing new components as required and replacing the assembly on its new foundation with all manipulations and electrical work; controller; power source; connection to local utility; loading and hauling; and equipment, materials, labor, tools, and incidentals.
3.Removal. Removing the roadside assembly components including the power service equipment; removing the foundations; storing the component to be reused or salvaged; backfilling and surface placement; loading and hauling, and equipment, materials, tools, labor, and incidentals.
b.Payment will be made under Item No . 730-A Removal of Existing Traffic Con trol Unit (1) (2) - per lump sum
731.01 Description.
730-C Furnishing and Installing Traffic Control Unit (2) - per lump sum 730-E Metal Traffic Signal Pole Foundation – per each 730-F Metal Traffic Signal Pole with (3) Mast Arm Assembly - per each 730-G Traffic Signal Pole, (4), (5) - per each 730-H Loop Wire - per linear foot {meter} 730-I Loop Detector Lead- In Cable - per linear foot {meter} 730-J Vehicle Loop Detector - per each 730-K Traffic Signal Junction Box - per each 730-L (6), (7), Conduit - per linear foot {meter} 730-M Interconnect Cable, (8), (9) AWG, (10), (11) - per linear foot {meter} 730-N Luminaire Extension Assembly, (12) feet {meters} - per each 730-O Illuminated Sign Assembly (13) (14) - per each 730-P (15) Signal Head, (16) Section, Type (17) - per each 730-Q Miscellaneous Equipment , (16) – per each 730-R Controller Assembly, Type (18) , (19) Output Phase Channels - per each 730-S (20) Traffic Signal Preemption (21) (22) (2) – per lump sum 730-T Electrical Power Service Assembly (23) – per each 730-U (24) Detection System (2) – per lump sum 730-Y (25) Pedestal Pole and Foundation with (26) – per lump sum
1.Specify Partial or Temporary if required
2.Specify Intersection Location
3.Specify Length of Mast Arm
4.Specify Type (Metal Strain, Concrete Strain, Wood Strain, Pedestal)
5.Specify State Furnished if required
6.Specify Size (1 inch, 2 inch, or 3 inch) {27 mm, 53 mm, or 78 mm}
7.Specify Type (metallic or non -metallic)
8.Specify Type (Aerial Self -supporting, Aerial Las hed, or Underground)
9.Specify Cable Size (No. 14 AWG or No. 19 AWG)
10.Specify Number of Conductors or Pairs (9 Conductors or 6 Pairs)
11.Specify (IMSA 20 -1, IMSA 20 -3, REA PE- 22, REA PE -38, or REA PE -39)
12.Specify Arm Length in Feet {Meters}
13.Specify Lighting Method (with Flashing Beacon, or With Embedded LEDs)
14.Specify Power Source (Solar, or Utility Powered)
15.Specify Vehicular or Pedestrian
16.Specify Type (Backplate for Existing Signal Head, Pedestrian Push Button, Pedestal Pole and Foundation)
17.Specify Type (Incandescent, Optically Programmed, or LED)
18.Specify Type (NEMA or ATC)
19.Specify Number of Output Channels (8, 16, or 32)
20.Specify Type (Acoustical, Optical or GPS)
21.Specify Whether or not Software is Requ ired (With Software, or Without Software)
22.Specify Whether or not Training is Required (With Training, or Without Training)
23.Specify Whether or not Wood Pole is Required (With Wood Pole or Without Wood Pole)
24.Specify Type [Video, Radar, Magnetometer, or Hybrid (Video/Radar)]
25.Specify (Furnishing and Installing, Removal of, or Relocation of)
26.Specify (Flashing Beacon, Pedestrian Signal Features, or Illuminated School Zone Sign) SECTION 731 TRAFFIC COUNTING EQUIPMENT
731.01 Description.
This Section shall cover the work of furnishing and installing, complete in place, traffic counting equipment as shown on the plans, at locations shown on the plans, all in accordance with the details shown on the plans and these Specif ications.
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 664–674 of 934.