922TRAFFIC SIGNAL MATERIALS AND EQUIPMENT

922.01Description

Unless otherwise specified, traffic signa l materials and equipment shall be in accordance with the NEMA TS2 2003 Standards Publication and be compatible with the Department’s current inventory of signal equipment.

922.02Traffic Signal Control Equipment

Models shall be selected from the QPL of Traffic Signal and ITS Devices, unless otherwise specified. 10

Each model of controller assembly, CA, and all major units, as defined in NEMA TS2-2.1.1, will be tested and evaluated by the Department’s Traffic Management Division, and approved prior to use. The CA, as defined by NEMA TS2-1.1.7, as being a complete electrical unit, shall include major units operational in a TS2 environment. Major units of the CA are defined as controller unit, CU; malfunction management unit, MMU; bus interface unit, BIU; cabinet power supply; load switches; vehicle detector equipment; cellular modems; radio modems, and flasher. The evaluation of a product will be considered when the De partment receives the preliminary product 20 evaluation submittal form. The Department will advise the manufacturer or vendor of the date of delivery. At the time of de livery, a presentation of the product will be required accompanied by the product broc hure, the operational manual containing procedures for all features incorporated in the CU’s design, and the maintenance manual containing all schematics, pictorial parts layouts, components parts listings, and documented theory of operation.

Certification in accordance with 922.02 (d) shall also accompany the preliminary product evaluation form. If a product has TS2 communicative capabilities, then a data analysis interpretation offered in a decimal form expressing frames by an SDLC 30 protocol analyzer shall accompany the initial documentation as well. When accuracy of documentation is validated, the evaluation period may commence. In addition, all computer system software applicable to a manufacturer’s product shall work with the 922.01

Department’s current operating systems so that upgrades will not be needed to recognize the full potential of the product. Any product under evaluation that has an operational failure occurring during the bench test procedure will be rejected and returned to the submitter.

The product will not be considered for future evaluation without a cover letter documenting failures encountered and changes to the design to correct the failures. A 40 presentation by the manufacturer of the product in question and explanation of why the product failed will be required. Resubmittal of the original product will be expected for testing, evaluation, and approval. Furthermore, two more rejections of a product submitted for evaluation will be cause to deny approval of that model permanently.

The controller model shall be fully NTCIP 1202 compliant and be capable of logging time-stamped controller event data at 100 ms resolution. The events collected shall be logged in the Department specified data file format and shall include, but are not limited to, start and termination of all phase green, amber, and red, pattern changes, and all detector actuations and terminatio ns. Data log file shall be accessible for 50 standard FTP retrieval directly from the controller model’s internal FTP server via the IP addressable RJ-45 Ethernet port.

Continued failures indicative of a trend, repeated random malfunctions, or NEMA non-compliance of a qualified product shall be cause to remove that model from the QPL of Traffic Signal and ITS Devices. If the manufacturer makes any changes to a qualified model of a major unit or controller cabinet terminal/facilities to correct a non-NEMA compliant or safety issue, the Department shall be notified immediately. The manufacturer shall correct all existing equipment purchased by the Department either directly, by contract, or through agreement prior to the change being 60 incorporated at the manufacturer’s production level.

A design change to a qualified model of a CA or any major unit shall require a submittal of documented changes. At the discretion of the Department, resubmission of the model for testing, evaluation, a nd approval may be required. The permanent addition or removal of component parts or wires, printed circuit board modifications, or revisions to memory or processor software, are examples of items that are considered to be design changes.

Contractor A CA, as defined by NEMA TS2-1.1.7, shall be provided by the Contractor and shall be built to the specifications of the intersection design. Each CA shall be supplied with three documentation packets. The documentation shall be provided in both paper hard copy and electronically as specified for each document. Each packet shall consist of:

panels, racks and wiring. The electronic document shall have a minimum of one indexed page for each paper sheet. 80 922.02

manufacturer, model, serial number, software/firmware version as applicable, and inventory number of all major units incorporated in the CA. The electronic document format and the blank worksheet shall be obtained from the Department’s Traffic Management Division.

electronic document format and the blank worksheet shall be obtained from the Department’s Traffic Management Division.

indexed and searchable electronic format file of the instructional programming manual, identical in nature to that approved for use during the evaluation of each product, and a TS2 Type 2 to TS2 Type 1 adapter harness.

All electronic documents shall be submitted to the Asset Manager in the Department’s Traffic Management Division. Each packet shall be labeled with the name of the intersection, the contract num ber, the commission number, and the date of installation. Packet destinations shall be as per 805.08.

A 60-day burn-in period of traffic control equipment shall be required prior to acceptance of the contract. The Contractor shall be responsible for all costs associated with vendor or manufacturer warranty service until acceptance of the contract, or acceptance of that portion of the contract where the traffic c ontrol equipment is installed. 110

The warranty from the manufacturer or vendor shall be provided for the following components: all major units operating in a TS2 environment, light emitting diode, LED, signal indications, load switches, and flashers. Warranty periods shall commence from the date of field placement of the device or on the date of signal turn- on as shown on the IC 636A form, if purchased through a contracting agent.

The following certifications shall be provided. 120

A certification representing each model of approved major unit of a CA shall be on file with the Department. A certification of a production run model for a CU will be valid for a maximum period of five years from the date of approval or unless a significant change is made in the CU. If a significant change is made, a new 922.02

certification shall be submitted. A significant change shall be the addition or deletion of any function or feature in the control unit or any other change as defined in

(a) to the circuitry in the product

A certification shall be provided with each major unit approval request indicating it has been tested and is in accordance with the tests from NEMA TS2-2. The certification shall specify the model and serial number of the product being tested. A complete log of each test shall be provided to the Department and will be maintained by the Department. The log shall indicate any controller component failure during the test, when it failed, and what steps were taken to repair the controller. The log shall include the date of testing, name and title of person conducting the tests, a record of conditions throughout the tests, and a temperature and humidity verses time chart. The maximum report interval of any chart shall be 24 h. The chart shall be from a recording 140 machine used to monitor the status of the environmental chamber during testing.

The following requirements are the minimum for the design and operation of a 16 channel, fully actuated solid state CU. The NEMA TS2 configuration will consist of 2 types of CU’s, Type A1 and Type A2, as defined in NEMA TS2-3.2.

The CU shall be in accordance with NEMA TS2 Standards, all provisions contained herein, and the Department’s specifications. Manufacturer specific enhancements are acceptable. No function or device shall preclude the 150 interchangeability of a CU with another CU of like NEMA specification within a controller assembly.

The CU shall be microprocessor based and both versions shall contain a three- port configuration and shall operate in the NEMA TS2 Type A1 environment.

The CU shall include provisions for time-of-day programming. The CU shall be capable of a minimum of 50 programmed ev ents and be in accordance with NEMA TS2-3.8. 160

A removable nonvolatile EEPROM module or removable serial, flash-based, non- volatile data module shall be utilized in each CU to maintain all programmed data. A real-time clock shall be either battery-backed or powered by a super capacitor and active during a power outage to provide complete time keeping functions and leap year corrections. A switch or other means shall be provided to turn off or disconnect battery power during storage. This shall be acco mplished without physical removal of the battery. Batteries within the CU shall be turned off or disconnected during storage and shipment.

Programming and maintenance manuals fo r approved CU’s shall be identical in nature to that approved for use during the evaluation period of the CU. The Department shall be notified of any changes to the manuals. 922.02

Serial number and model numbers shall be permanently applied on or near the front of circuit boards of the CU and viewable without removing or disconnecting the board. Serial number and model number of the main frame shall be permanently applied externally on top or on the front panel.

The requirements set forth herein refer to a type A1 and A2 CU. Differences between types will be designated.

The CU shall have, as a minimum, the internal diagnostics defined by NEMA TS2-3.9.3.

The CU shall monitor and log the status of events as specified in NEMA TS2- 3.9.3.1.5 in non-volatile memory and shall be selectable via program entry and be retrievable by the system computer via NEMA port 2 or 3. In addition, the CU shall have the ability to log an MMU fault as it occurs. A minimum of 16 entries shall be 190 stored in non-volatile memory. When capacity is exceeded, the oldest entry will be replaced by the newest. Logged entries shall, at a minimum contain the date and time denoted in military style with minute resolution, description of the fault as it would appear on the MMU, and the status of each of the channel inputs at the time the fault occurred, clearly denoting the presence of activity on a channel.

The CU shall be capable of all inputs and outputs listed by controller type in NEMA TS2-3. Pedestrian timing shall be provided on all phases of a CU. The CU

shall be keyboard programmable to enable initialization in any color and phase.

Initialization shall occur after a recognized power interruption, upon MMU reset, or200

upon return from manual or time-of-day flash. The CU shall be programmable from a

closed loop computer system, a laptop computer using the RS232 port, front panel

programming, and by downloading from another like CU through the RS232 port.

Keystroke buttons shall be clearly marked as to function. All programming

buttons and indicators pertinent to the operation of a phase shall be on the front of the

CU and shall have programmable phase omitting and phase skipping capabilities.

The TS2 Type A2 CU shall be in accordance with all applicable requirements for

a Type A2 CU as defined by NEMA TS2-3 and shall contain a full complement of210

connectors.

The CU shall have an RJ-45 ethernet port on the front panel and ethernet module

that provide 10/100 base T interface in half or full duplex and which supports auto-

configuration of the link parameters.

All plug-in modules shall be equipped for easy removal or installation without the

use of tools and shall be readily accessible for maintenance. All internal module plugs

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and edge card plugs shall have the corresponding pin connector position labeled with220

the first and last numbers or the first and last letters.

The enclosure shall be of adequate strength to protect the components during

normal handling. The keypad, liquid crystal display, and all interface connectors

required for the operation and standard field adjustments shall be mounted on the front

panel. Fusing shall be on the front panel of the CU and shall provide protection from

internal or external overload.

The front panel of the controller shall be fastened to the frame such that no special230

tools shall be required to remove or replace printed circuit board modules or to gain

access through the front panel. All hinges shall have stainless steel pins.

The Department’s Traffic Management Division shall be notified each time an

update or revision of the firmware or software is released and be provided with an

explanation of the changes and the benefits of the change. The Department will

determine if and to what extent a revision is to be placed into field operation and may

fully re-evaluate the CU with the revision.

240

Facilities, TF, Requirements

These standards define the minimum requirements for a TS2 Type A1 cabinet,

both inside and out. The performance and construction of the cabinet shall be in

accordance with the applicable requirements of NEMA TS2 sections 4, 5, 6, and 7.

The serial number and model number of the auxiliary equipment shall be permanently

applied externally on or near the front of the product. Programming and maintenance

manuals for approved products shall be identical in nature to that approved for use

during the evaluation period of the product.

250

The Department shall be notified of all changes to the documentation.

Manufacturer specific enhancements are acceptable. No function or device shall

preclude the interchangeability of an auxiliary product with another product of like

NEMA specification within a controller assembly.

The NEMA TS2 Type A1 controller cabinet shall be in accordance with the

following requirements.

The cabinet and the shelves shall be fabricated of aluminum. The cabinet shall be

1/8 in. minimum thickness sheet aluminum or 1/4 in. minimum thickness die-cast

aluminum. The cabinet exterior and interior including shelves shall have a sandblasted,

roughened, or chemically etched finish that reduces gloss, reflection, and glare.

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1170

The main cabinet door shall use a Corbin lock No. 2 and each cabinet shall be

furnished with two No. 2 keys. The lock shall open in a counterclockwise motion only.

The door shall be capable of being opened and stopped in, at least, two ranges of

degree openings as measured from the face of the cabinet door on the hinged side: 80

to 100°, and 170 to 190°. The door shall be hinged on the right side of the cabinet. The270

main door and the police panel door shall close against a weatherproof and dustproof

gasket seal, which shall be permanently bonded to the cabinet. A standard police panel

key shall be provided with each cabinet.

A rain channel shall be incorporated into the design of the main door panel to

prevent liquids from entering the enclosure. A 1 1/2 in. deep drawer shall be provided

in the cabinet, mounted directly beneath the controller support shelf. The drawer shall

have a hinged top cover and shall be capable of accommodating one complete set of

cabinet prints and manuals. This drawer shall support 50 lb in weight when fully

extended. The drawer shall open and close smoothly. Drawer dimensions shall make280

maximum use of available depth offered by the controller shelf and be a minimum of

24 in. wide.

The cabinet shall have a police door and a police control panel within the main

door. The police panel shall have three different switches, one switch for field

indication cutoff, one switch for flashing operation, and one switch for Auto and

Manual with a manual control jack to accept a 1/4 in. monaural phone plug jack. The

switches shall be protected from water when the cabinet door is open.

290

A test switch panel shall be mounted on the inside of the main door. The test

switch panel shall include, as a minimum, the following switches. An auto/flash switch

shall be installed so that when in the flash position, power shall be maintained to the

controller and the intersection shall be placed in flash. A stop time switch shall be

installed so that when in the ‘On’ position the controller shall be stop-timed in the

current interval. A controller equipment power On/Off switch shall be installed which

shall control AC power to the CU, MMU, and cabinet power supply. All switches

mounted on the switch panel on the inside of the main door shall have in place a

mechanism to prevent accidental activation of the switch. “Locking bat” type switches

or side switch guards are acceptable.300

Switch guards, if used, shall be in place for each switch, shall be made of the same

material as the cabinet, and shall enable the operation of the switch without the use of

tools.

All switch functions shall be permanently and clearly labeled. Handwritten

labeling will not be allowed.

The cabinet shall include all required wiring, connectors, and adapters to provide

full compatibility and interchangeability with either a TS2 Type A1 or Type A2310

controller.

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The cabinet shall contain one duplex convenience outlet and a lamp receptacle

that is actuated and turns on when the door is open and goes off when the door is

closed. The cabinet shall also contain an internal On/Off switch to override the lamp

receptacle. The convenience outlet shall be duplex, three-prong, NEMA Type 5-15R

grounding outlet in accordance with NEMA WD - 6, with ground-fault circuit

interruption as defined by the NEC. These units shall be protected with a 15-ampere

cartridge fuse wired ahead of the multi breakers. An additional outlet shall be provided320

in each cabinet and shall be a duplex, three-prong, NEMA Type 5-15R grounding

outlet wired after the cabinet surge protection. This unit shall be protected with a 10-

ampere cartridge fuse. The additional outlet in master cabinets shall be powered by the

10-ampere circuit breaker and through a separate power interrupt switch providing

separate control of the master CU power supply.

The cabinet shall contain a thermostatically controlled ventilating fan and a vent

with a commercially classified uniform 1 in. thick filter. The thermostat shall be

manually adjustable from 90 to 115°F. The fan shall be mounted internally at the top330

and toward the front of the cabinet to exhaust out the front top lip of the cabinet. The

fan shall be rated at a minimum of 100 cu ft per minute as designated by NEMA TS2-

7.9.1The thermostat shall be located within 6 in. of the fan

The filter size shall be in accordance with the provisions for the type of cabinet as

stated in NEMA TS2-7.9.2.3 and shall be a replaceable pleated air filter with a

minimum efficiency reporting value, MERV, rating of 5 or higher as defined by the

ASHRAE 52.2-2007 specification. The cabinet ventilation shall be in accordance with

NEMA TS2-7.9. The diameter of circular openings for cabinet ventilation shall not

exceed 3/8 in. The short dimension for slotted openings shall not exceed 3/8 in.340

Each inductive device, including the fan, shall have a separate power surge

protection.

The cabinet shall contain a jack mounted Type 3 solid state non-repairable flasher

in accordance with NEMA TS2-6.3 electrical and physical dimensions.

The pedestrian load switch and the signal load switch shall be an approved unit

meeting all electrical and physical dimension requirements in accordance with NEMA350

TS2-6. The load switch shall not use a printed circuit board to transmit the 115V AC

line input or signal buss output. Each load switch shall offer three indicators, one for

each circuit indicating the status of the input to the load switch.

The load switch signal outputs shall be brought to a separate terminal strip for

hook-up of the signal displays. Load switches inputs shall be capable of being

programmed for flash, overlap, vehicular, or pedestrian phases with the use of a

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1172

standard slotted or phillips screwdriver via the cabinet terminal strip. The load switch

input programming of the TS2 Type A1 CU shall be accomplished through front panel

data entry of a TS2 Type A1 or a TS2 Type A2 CU.360

The TF layout shall be in accordance with NEMA TS2-5.2.7. The cabinet shall

contain a main TF panel complying with NEMA TS2-5 standards. The model number

of the main panel shall be permanently applied to the front of the panel and shall be

easily readable without removing or disconnecting the panel. Each controller input and

output circuit shall terminate on the main TF panel or on a supplementary panel. The

phase arrangement of the controller shall coincide with the channel arrangement of the370

load switches and MMU. All outputs on channels 9 through 12 field connections shall

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TFs within the cabinet shall be readily accessible for field connection without

removing the controller or associated equipment and for maintenance in the cabinet.

All stranded wiring shall be tinned. A 24 volt relay shall be used on the TF to remove

24V DC from the common side of the load switches, effectively taking the mercury

relay out of the circuit when the signal is put in mechanical flash. The TF panel shall

be hinged at the bottom and capable of swinging down to allow accessibility of the

wiring and terminals at the rear of the panel. The backpanel shall be attached to the

cabinet such that access to the backside of the backpanel, for maintenance purposes,380

shall be accomplished without the use of special tools or removal of auxiliary panels,

shelving, or other cabinet appurtenances. A bracket extending at least half the length

of the NEMA load switch shall support all load switches.

Terminals shall be consecutively numbered on both sides of the TF panel and shall

be in compliance with the appropriate schematic diagrams. All positions for load

switches, flasher, and mechanical relays shall have reference designators on both sides

of the TF panel. All nomenclature shall be on or adjacent to the component or terminal.

All nomenclature shall be machine produced and not handwritten. Cabinet prints shall

identify the function of each terminal position.390

CU and MMU harness cables shall be of sufficient length to allow units to be

placed on either shelf or on top of the cabinet while remaining in operational mode.

RS485 port 1 communications cable shall also be of sufficient length to allow any port

1 cable to be utilized with any TS2 unit within the CA. The RS485 harness shall be

constructed of a high quality shielded communications cable. The TF panel shall

contain a resistor/capacitor network circuit which will provide an external restart pulse

to initiate the startup sequence upon initialization from flash.

Remote flashing shall be provided for all signal circuits. Unless otherwise400

indicated on the plans, phases 2 and 6 shall be wired to flash yellow. All other phases

shall be wired to flash red. Flashing for signal circuits shall be activated on one circuit

for odd numbered phases and on the other circuit for even numbered phases.

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1173

A transparent plexiglass cover shall be provided over the CA power supply panel.

The cover shall leave the switches on the breakers exposed as well as leave access to

terminals at the bottom of the panel for wiring purposes. No terminals on the power

panel shall have silicon protectant on them in lieu of the plexiglass cover. The panel

shall contain a multi-breaker with one 10A circuit breaker to provide overload410

protection to the CU, MMU, BIU, +12/24V DC cabinet power supply, and detection

devices. It shall also contain one main circuit breaker of 35 or 40A, to provide over-

load protection to the signal and flash bus load. All breakers shall have line and load

terminals clearly labeled. The signal bus shall be connected to the incoming AC line

through a mercury contact switch or a solid state control device functionally equivalent

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the cabinet shall be capable of accepting a No. 6 wire.

With the CA 10A and main 35 or 40A circuit breakers ‘Off’ (tripped), all units

inside the cabinet and the intersection display shall be ‘Off’. With the 10A breaker420

‘On’ and main 35 or 40A circuit breaker ‘Off’, the signal output shall be ‘Off’ and the

major units within the cabinet shall function. With the 10A breaker ‘Off’ and main 35

or 40A circuit breaker ‘On’, the intersection shall be in flash mode and all units within

the cabinet will be ‘Off’.

The cabinet shall contain a 50kA, [ȝVVXUJHVXSSUHVVRU7KHVXUJHVXSSUHVVRU

shall be a 120V AC, 15A, minimum 2-stage parallel/series type device and protect

lines: line-neutral, line-ground and neutral-ground, have a maximum continuous

operating voltage of 140V AC, maximum clamp voltage of 350 volts, and device status

indicators of green/good and red/failed. The device shall plug into a NEMA 12430

position terminal base wired before and in parallel with the 35 or 40A main signal buss

circuit breaker and in series with the 10A circuit breaker for the solid state equipment

and provide for a tool-free replacement of the device. There shall be a minimum of

two electrical receptacles on the equipment side of the device for future auxiliary

equipment. The surge suppressor shall operate between -30 to 165°F. The dimensions

of the unit shall not exceed 4 1/2 in. wide by 7 in. long by 3 1/2 in. deep.

All equipment capable of operating at 12 or 24V DC typically powered by an

individual receptacle type power supply shall have a power cable permanently wired

into the cabinet and the device shall be powered by the cabinet TS2 power supply.440

The cabinet shall contain a MMU and shall be in accordance with the standards

of NEMA TS2- 4. The MMU shall be wired to monitor each load switch output.

All BIU’s shall be in accordance with NEMA TS2 2008, Section 8. Edge mounted

printed circuit boards and rack cards shall not have jumper wire modifications unless

the jumper wires are permanently bonded to the PCB over its entire length. BIU’s shall

922.02

1174

be supplied with each cabinet to allow for maximum phase and function utilization for450

which the cabinet is designed.

All loop amplifier units shall be in accordance with NEMA TS2-6 and shall follow

Type C, two-channel with delay and extend, as stated in NEMA TS2-6.5.2.2.1. All

amplifiers shall be selected from the QPL of Traffic Signal and ITS Devices for each

type of amplifier. In addition, loop amplifiers shall have an LCD display or a RS232

serial data connection and software interface capable of displaying loop status460

including but not limited to operating frequency and -ǻ// GLDJQRVWLFV DQG DOO

amplifier settings and operating parameters. Edge mounted printed circuit boards and

rack cards shall not have jumper wire modifications unless the jumper wires are

permanently bonded to the PCB over its entire length.

All detection components including amplifiers, racks, auxiliary BIU, interface

panels, lead-ins, and all connecting harnesses shall provide one count output channel

per lane of each approach within project limits.

All loop amplifiers designated for counting shall meet all requirements as above470

and shall additionally transmit channel 1 and 2 count pulses on the edge connection

assigned to channels 3 and 4 respectively. Counting amplifiers shall be configured

with count outputs mapped to and recorded in the CU detector logs. The status output

of each active counting channel, 3 and 4, shall be set to logic ground by software

configuration within the amplifier or externally by use of jumper card in the adjacent

slot.

An auxiliary BIU panel may be used strictly for count outputs, channels 3 and 4

only, in this configuration, the status outputs for those count output channels may be

wired to logic ground on the BIU panel. The status outputs for all standard output480

channels shall provide accurate status data at all times. All detector input data to the

CU shall remain accurate at all times.

All M and P-1 cabinets shall incorporate a 16 channel detector rack, configuration

No. 2, in accordance with NEMA TS2-5.3.4, and shall allow operation of a two-

channel detector in each slot and the capability of operation of a two-channel counting

amplifier in each even-numbered slot with the respective count outputs in each odd

numbered slot. The number of detector racks provided shall be determined by the loop

tagging table. All G cabinets shall incorporate an eight-channel detector rack,

configuration No. 1, in accordance with NEMA TS2-5.3.4.490

All detector loop panels and detector racks shall be labeled according to the loop

tagging table and as follows.

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All detection shall be labeled in such a way that the numbering for any loop is

consistent throughout the cabinet; the loop terminated as Loop or Detector 17 shall be

Detector Channel 17 in the detector rack and Detector Input 17 to the controller.

Each loop lead-in panel shall be labeled on the upper left corner with the loop500

numbers that are terminated on that panel as follows: (1-16), (17-32), (33-48), (49-64).

Each loop termination point shall be labeled with the corresponding loop number.

Example: For panel 17-32: loops terminated on this panel will start with 17 and end

with 32.

Each detector rack shall be labeled at the bottom of the rack with a continuous

label. The label shall be 1 in. wide, thermal printed black on clear, white, or matte

polyester tape with permanent adhesive, water, chemical and scratch resistant printed

with 4 lines of Arial, size 10 font. Below the BIU shall be the BIU number and detector510

channel numbers that are contained within the rack as follows: (1-16), (17-32), (33-

48), (49-64). This area shall also contain the intersection for diamond interchanges

controlled from one cabinet.

Each slot shall be labeled below the module with the corresponding loop tag

information. The count output number portion of the information shall be under the

first part of the tag information. For each two-channel module, the label for channel 2

shall be below the label for channel 1.

The TS2 cabinet power supply shall adhere to the guidelines of NEMA TS2-5.3.5.

The power supply shall be encased on all sides so that no circuitry is exposed to the

user.

The G cabinet shall be pedestal-mounted or pole-mounted. As per NEMA TS2-

5.3, the TS2 Type 1 G cabinet, at minimum, shall house an eight-load switch bay

(configuration 2) terminal and facilities panel and shall have 1 adjustable shelf located530

12 in. below the top of the cabinet. The bottom of the cabinet shall be reinforced to

ensure a secure pedestal mounting. The G cabinet shall have dimensions of 25 in. wide,

38 in. high, 18 in. deep with a tolerance of + 4 in. in any or all dimensions.

A cabinet slipfitter shall be used to attach the cabinet to the pedestal. The slipfitter

shall fit a 4 1/2 in. outside diameter pipe and shall have a minimum of three set screws

equally spaced around the slipfitter.

A vent of adequate size shall be provided. The size of the vent and the filter

requirements shall be in accordance with the manufacturer’s recommendations.540

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As per NEMA TS2-5.3, the TS2 Type 1 M cabinet, at minimum, shall house an

eight-load switch bay (configuration 2) terminal and facilities panel and shall have two

adjustable shelves with the first shelf located 15 in. below the top of the cabinet and

the second located 7 in. below the first shelf.

The M cabinet shall be ground-mounted on a concrete foundation at locations and

dimensions as shown on the plans.

550

The M cabinet shall have dimensions of 30 in. wide, 48 in. high, and 16 in. deep

with a tolerance of ±2 in. in any or all dimensions.

Anchor bolts shall be steel in accordance with ASTM A36. Diameter of the bolt

shall be 1/2 in. or 5/8 in. and the minimum length shall be 15 in. plus 3 in. right angle

hook on the unthreaded end.

The top 6 in. of the bolt shall be threaded with 13 NC threads on 1/2 in. bolts and

11 NC threads on 5/8 in. bolts. The hexagon nut, the flat washer, and the threaded end

of the bolt shall be hot-dip galvanized in accordance with ASTM A153 or be560

mechanically galvanized and in accordance with the coating thickness, adherence, and

quality requirements of ASTM B695, class 55.

The cabinet shall include one loop detector rack.

The P-1 cabinet shall be ground mounted on a concrete foundation at locations

and dimensions as shown on the plans with anchor bolts in accordance with

(g)2. As per NEMA TS2-5.3, the TS2 Type 1 P-1 cabinet, at minimum, shall

house a 16-load switch bay (configuration 3) terminal and facilities panel and shall570

have two adjustable shelves with the first shelf a minimum of 30 in. above the bottom

of the cabinet, the second shelf having a minimum clear opening of 11 in. above the

first shelf.

The cabinet shall be 44 in. wide, 52 in. high, and 24 in. deep with a tolerance of

±3 in. in any or all dimensions.

The cabinet shall include two loop detector racks.

The R cabinet shall be ground mounted on a concrete foundation at locations and

dimensions as shown on the plans with anchor bolts in accordance with 922.02(g)2.

As per NEMA TS2-5.3, the TS2 Type 1 R cabinet, at minimum, shall house a 16-load

switch bay (configuration 3) terminal and facilities panel and shall have three

adjustable shelves with the first shelf located a minimum of 30 in. above the bottom

of the cabinet, the second shelf having a minimum clear opening of 11 in. above the

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1177

first shelf and the third shelf having a minimum clear opening of 11 in. above the

second shelf.

The cabinet shall be 44 in. wide, 72 in. high, and 24 in. deep with a tolerance of590

±3 in. in any or all dimensions.

The cabinet shall include three loop detector racks.

Two circuit alternating flasher shall be solid state.

The solid state flasher shall periodically interrupt a source of alternating current

line power. Solid state shall mean electrical circuits, the active components of which600

are semi-conductors, to the exclusion of electromechanical devices or tubes.

The flasher shall be a Type 3 solid state flasher conforming to NEMA TS1-1989.

The flasher output circuit carrying the signal load shall consist of opto or photo isolated

solid state power relays and shall be hard wired to the flasher connector.

Three schematic diagrams and three descriptive parts lists shall be furnished with

each flasher.

Two circuit flashers shall be plug-in design. The flasher design shall not allow the610

unit to be inserted improperly into the plug-in base. The flasher shall have heavy-duty

plugs and jacks capable of handling the rated load current. The rate of flash shall be

50 to 60 flashes per minute.

The flasher shall operate between 95V and 135V AC 60 Hz. No degradation of

performance shall be experienced in environmental changes from -20 to 165°F and 0

to 90% relative humidity.

The cabinet shall be weatherproof and fabricated from cast aluminum or620

aluminum sheeting with a minimum thickness of 1/8 in. The cabinet door shall be the

entire front of the cabinet and shall be hinged on the right or left side of the cabinet. A

Corbin No. 2 lock and two No. 2 keys shall be furnished. The lock shall be located

near the center of the door on the side opposite the hinge.

Minimum dimensions for the cabinet shall be 12 in. deep, 12 in. wide, and 12 in.

high. The maximum dimensions shall be 18 in. deep, 15 in. wide, and 18 in. high.

The cabinet shall have two pole plates for stainless steel band mounting of the

cabinet on a pole with a minimum diameter of 4 in. and a maximum diameter of 18 in.630

Two blank cover plates shall be provided. Two hub plates for 1 in. diameter conduit

shall be provided with gaskets, eight bolts at four bolts per plate, nuts, and washers for

922.02

1178

attaching the hub plates to the cabinet. The cabinet shall be drilled for the mounting of

the pole plates or hub plates as shown on the plans.

It shall have a screened vent in the bottom with a minimum size of 1 3/4 sq in.,

and a minimum of one louvered and screened vent towards the top of the cabinet.

The panel in the cabinet shall be capable of being removed and reinstalled with

simple hand tools. A 25 ampere radio interference filter and surge arrestor wired ahead640

of a 15 ampere circuit breaker shall be mounted on the panel. A terminal block capable

of the following electrical connections shall be mounted on the panel:

Circuit 1 - for connection of field signals (flash circuit 1)

Circuit 2 - for connection of field signals (flash circuit 2)

Circuit 3 - for connection of field signals (field neutral)

AC plus - capable of accepting a No. 6 wire

AC minus - capable of accepting a No. 6 wire

Ground lug - capable of accepting a No. 6 wire.

650

922.03Signal Head Components

The components shall be in accordance with the Institute of Transportation

Engineers for Adjustable Face Vehicular Traffic Control Signal Heads. All new traffic

signal and flasher installations that include new indications shall be fitted with LED

modules. All LED indications shall be selected from the QPL of Traffic Signal and

ITS Devices.

The signal faces shall be sectional in construction, requiring one section for each

lens and furnished in the nominal size of 12 in. Each section of a face shall have a660

rectangular silhouette when viewed from the front or the rear.

The top and bottom of each housing shall have an integral locking ring with 72

serrations to enable rotation of the signal housing in 5° increments. Hub openings in

the top and bottom of the signal housing shall accommodate standard 1 1/2 in. bracket

arms. The thickness of the hub at the top and bottom of the housing shall be a

maximum of 1 in. and a minimum of 3/8 in. The 12 in. door shall have two simple

locking devices. The door on the hinged side shall be attached with hinge pins. Each

lens shall have the standard cap type visor. All screws, latching bolts, locking devices,670

and hinge pins shall be stainless steel.

All LED indications shall be selected from the QPL of Traffic Signal and ITS

Devices.

922.03

1179

All LED indications shall have a permanent indelible sticker affixed to the back

of the module indicating month and year of initial installation.680

All LED indications provided shall be individually listed on a parts list indicating

the contract number, vendor, category, manufacturer, model, serial number, and

inventory number. Hard copy and electronic copies shall be provided. The electronic

document format and the blank worksheet shall be obtained from the Department’s

Traffic Management Division.

All new traffic signal and flasher installations that include new indications shall

be fitted with LED’s. The minimum design requirements for replacement incandescent690

light bulbs used in a traffic signal face shall be in accordance with the Institute of

Transportation Engineers standard for traffic signal bulbs.

The field wiring leads shall be terminated with screw spade lug type connectors.

The LED module wiring leads shall be terminated with 1/4 in. female type connectors

for ease of connection to the terminal block.

Any method to connect two or more sections together may be used, if the700

following requirements are met:

structural integrity when loaded in accordance with Institute of

Transportation Engineers Standards.

1/2 in. cables.

shall be 4 in.

Nuts, bolts, and lock washers shall be hot-dip galvanized in accordance with

ASTM A153 or be mechanically galvanized and be in accordance with the coating

thickness, adherence, and quality requirements of ASTM B695, class 55.

The center section of the three-section signal head, both center sections of the

four-section head, one section of the two-section signal head, and each one-section

signal head shall be equipped with a five-position terminal block for termination of720

field wiring. Each section shall have provisions for two five-position terminal blocks.

Each terminal screw shall have a 1/4 in. corresponding spade tab. The terminal block

shall have a minimum spacing between screw connections of 1/2 in. The height of the

922.03

1180

insulating ridge between screw connections shall be a minimum of 19/32 in. from the

base of the terminal blocks.

The housing, door, and visor of the section shall be made of ultraviolet and heat730

stabilized polycarbonate. The black color shall be permanently molded into the

components.

The housing, door, and visor of the section shall be made of a die-cast, corrosion

resistant, copper free, non-ferrous metal which shall be in accordance with

ASTM B85. All surfaces of the housing, doors, and visor shall be shop painted or

powder coated. The finish shall be nonreflecting flat black, color No. 37038, in

accordance with SAE-AMS-STD-595.

740

The traffic signal backplate shall be one piece and made of sheet aluminum. The

sheet aluminum shall have a nominal thickness of 0.063 in. and shall be according to

ASTM B209, alloy 5052. The backplate shall be designed to be attached to a signal

face without interfering with the opening and closing of the traffic signal door. It shall

be rectangular in shape with round corners and shall be of such dimensions as to give

an exposed margin of 5 in. on each side.

The backplate shall have a 2 in. wide yellow retroreflective strip applied to the

outside perimeter of the backplate. The sheeting shall be Type IV in accordance with750

919.01(b) and applied in the orientation for the maximum angularity according to the

manufacturer’s recommendations.

The aluminum backplates shall be shop painted or powder coated. The finish shall

be nonreflecting flat black, color No. 37038, in accordance with SAE-AMS-STD-595.

A material certification shall accompany each order certifying that a signal head

from a normal production run within the past 12 months, passed the Institute of

Transportation Engineers criteria for breaking strength and deflection. Deflection760

testing is not required in the certification for polycarbonate signal heads.

922.04Pedestrian Signal Components

A pedestrian signal shall be one section and rectangular in shape. The dimensions

of each side may vary from 18 to 19 in., including the visor and the hinges. The signal

shall contain two figures with two different colored messages. The first figure shall

transmit an upraised hand symbol message, and the second figure shall transmit a

922.04

1181

walking person symbol message. All new installations including new pedestrian770

indications shall use Light Emitting Diodes with countdown displays. All pedestrian

LED indications shall be selected from the QPL of Traffic Signal and ITS Devices.

The pedestrian signal shall be in accordance with the standard of the Institute of

Transportation Engineers for Pedestrian Traffic Control Signal Indications.

The housing shall be equipped with mounting device hardware, such as a

clamshell, with round openings at the top and bottom for mounting with brackets made

of iron pipe standard, to fit the 1 1/2 in. pipe. The round openings shall have a common

vertical centerline through the housing to allow for rotation. The round openings shall780

have a serrated ring, with 72 serrations, which enables locking of the housing in 5°

increments. The brackets or the clamshell shall serve as the electrical conduit for the

pedestrian signal. The housing shall be black and made of die-cast, corrosion resistant,

copper free, non-ferrous metal which shall be in accordance with ASTM B85.

The door on the front of the housing may be hinged from any side. The door shall

be gasketed to maintain a weather-tight enclosure when secured to the housing. The

door and the visor shall be made of the same material as the housing or of

polycarbonate. All materials shall be clean, smooth, and free from flaws, cracks,

blowholes, or other imperfections.790

The polycarbonate components shall be black in color. The metal components

shall be painted or powder coated. The finish shall be nonreflecting flat black, color

No. 37038, in accordance with SAE-AMS-STD-595.

The upraised hand and walking person symbols shall each be a minimum of 11

in. in height. The width of the upraised hand symbol shall be a minimum of 7 in. The

width of the walking person symbol shall be a minimum of 6 in. Message

configuration, color, and size shall be in accordance with the standard of the Institute800

of Traffic Engineers for Pedestrian Traffic Control Signal Indications.

Each pedestrian signal shall be completely wired internally and ready for

connection of the field wiring. A suitable terminal block for connection of the internal

wiring and the incoming field wires to the pedestrian signal head shall be provided in

the signal housing.

The light source shall be designed and constructed so that if an electrical or

mechanical failure occurs, the upraised hand and walking person symbols shall also

remain dark.810

Pedestrian push-button assemblies shall meet the standards of the MUTCD and

Americans with Disabilities Act, ADA. Pedestrian push-button assemblies shall be

vandal and weather resistant, be pressure activated with minimal movement, and

922.04

1182

cannot be stuck in a closed or constant call position. A red latching LED and audible

tone shall be provided for confirmation of an actuation call.

A Type D certification in accordance with 916 shall be provided for the pedestrian

push-button. Such certification shall contain the contract number, manufacturer's820

name, model name, supplier's name, location or intersection name, and for a Type APS

pedestrian push button, the sound level measurement of the audible features of the

device.

The pedestrian push-button housing shall be constructed of cast aluminum, cast

zinc alloy, or stainless steel and powder coated yellow, and furnished with suitable

mounting hardware.

The normal state of the LED shall be off. When the push button is pressure

activated, the LED shall be lighted and remain on until the beginning of the walk

phase. The latching relay shall be mounted in the signal cabinet, controlling two

pedestrian phases.

The actuator shall be stainless steel or aluminum with a minimum diameter of 2

in. and a solid state electronic Piezo switch rated for a minimum of 20 million cycles

with no moving plunger or moving electrical contacts. The operating voltage shall be

12-24V. The actuator’s nominal operating force shall not exceed 5 lb.840

The pedestrian sign shall be the R10-3e in accordance with the MUTCD, unless

a different MUTCD sign code is indicated on the plans. The sign base shall be sheet

aluminum in accordance with 919.01(b).

When an APS is specified, the push-button shall have audible and tactile features.

The push-button shall activate both the Walk interval and the APS. The color of the

actuator shall contrast visually with the housing or mounting. A standard850

manufacturer’s warranty shall be provided.

The pedestrian push-button assembly shall include an audible indication of the

Walk interval by either tone or voice and shall be audible from the near side of the

associated crosswalk. If the tone for the Walk interval is the same as the locator tone

of the push-button, it shall have a faster repetition rate than the associated locator tone.

The volume of the audible features shall have automatic volume adjustment based on

the ambient noise levels. Audible features shall be at least 2 dB but no more than 5 dB

louder than ambient sound, up to a maximum volume of 89 dB measured at 36 in. from860

922.04

1183

the device. Audible features may be integral to the pedestrian push-button assembly

or through a separate speaker housing.

When push buttons are separated by 10 ft or more, the audible indication shall be

a tone.

When push buttons are separated by less than 10 ft, the indication shall be a voice

message. When voice messages are used, they shall include a clear message that the

walk interval is in effect and shall indicate to which crossing it applies.

870

The pedestrian push button shall have an audible locator tone feature. The locator

tone shall have a duration of 0.15 seconds or less and shall repeat at 1 second intervals.

The push button assembly shall incorporate a raised arrow. The arrow shall be

raised 0.03125 in. minimum and shall be 1.5 in. minimum in length. The arrow color

shall contrast with the background. The raised arrow shall vibrate to indicate that the

walk interval is in effect.

922.05Blank880

922.06Disconnect Hanger Junction Box

Traffic signal disconnect hanger junction boxes shall consist of a span hanger, a

balance adjuster, a disconnect hanger clevis, and a housing with a hinged door with a

positive latching device. The span hanger, balance adjuster, and all related hardware

shall be hot-dip galvanized in accordance with ASTM A153 or be mechanically

galvanized and conform to the coating thickness, adherence, and quality requirements

of ASTM B695, class 55. The housing shall be made of a die-cast, corrosion resistant,

copper free, non-ferrous metal which shall be in accordance with ASTM B85. The

balance adjuster fitting shall be made of ferrous or non-ferrous metal. When made of890

ferrous metal it shall be galvanized in accordance with the requirements for the

components and related hardware as set out above.

The disconnect hanger shall be designed so the maximum allowable space or play

between the span hanger and the eye-bolt of the balance adjuster and between the

balance adjuster and the disconnect hanger clevis, at points where they are attached to

each other by rivet pins or hex head bolts and nuts with lock washers, shall be 0.062

in. The span hanger bolt where the eye-bolt or the balance adjuster is attached shall be

5/8 in. diameter.

900

When serrated locking rings are not integrally cast in the components, the

component and locking ring shall be designed so that when the locking ring is placed

flush against the component, the component and locking ring shall not rotate or slide

when torque is applied. The serrated components shall have 72 serrations to enable

rotation of the disconnect hanger clevis, hub plate, or signal head in 5° increments.

922.06

1184

There shall be no thread in contact with a wearing surface. Locking rings shall be

a minimum thickness of 3/16 in. and a maximum thickness of 1/4 in. from the base of

the ring to the serration peaks. The inside diameter shall be 2 in. and the outside

diameter shall be 2 7/8 in.910

The terminal block shall have an 18-point terminal block permanently engraved

or etched with sequential numbers indicating the circuits. The terminal block shall not

have a method of connection which allows a screw point to damage wires when the

wires are securely connected. Each point of connection shall accommodate a minimum

of four No. 14 gauge wires.

The disconnect hanger shall have two side entrance holes on opposite sides

capable of receiving a 1 1/2 in. plastic or rubber insert to reduce water infiltration. It

shall be capable of supporting signal faces in the ambient temperature range of -35 to920

120°F without failure.

The balance adjuster shall have hex head bolts, lock washers, and nuts for securing

the main body of the balance adjuster firmly onto and around the eye-bolt to prevent

any twisting or turning of the head suspended below it. The span hanger shall have

two J-bolts, lock washers, and hex head nuts adequate in size to securely fasten the

hanger to a messenger cable up to 1/2 in. in diameter.

A Type C certification in accordance with 916 shall be provided for the disconnect

hanger junction box.930

922.07Signal Support Assemblies

The maximum allowable space or play between the hanger assembly and the eye-

bolt of the balance adjuster and between the balance adjuster and the weatherhead

clevis, at points where they are attached to each other by rivet pins or hex head bolts

and nuts with lock washers, shall be 0.062 in. No bushings or shims will be allowed

in this assembly.

940

The balance adjuster shall consist of a hex head bolt, a lock washer, and nuts for

securing the main body of the balance adjuster onto and around the threads of the eye-

bolt to prevent any twisting or turning of the adjuster.

The span hanger, balance adjuster, weatherhead, and all related hardware shall be

made of a non-corrosive metal or shall be hot-dip galvanized in accordance with

ASTM A153 or be mechanically galvanized and conform to the coating thickness,

adherence, and quality requirements of ASTM B695, class 55. The weatherhead shall950

have a minimum of 2 1/2 in. of exposed threads. The weatherhead shall have two set

screws to fasten the nipple to the weatherhead. If the weatherhead and threaded pipe

922.07

1185

has a slip-in connection, the locking device shall be a double nut assembly. If the

weatherhead and threaded pipe has a screw-in connection, the locking device shall be

a double set screw assembly.

The span hanger shall be furnished with two each of J-bolts, lock washers, and

hex head nuts. The J-bolt shall be a minimum of 1/4 in. diameter and shall have

sufficient threads to be able to secure the hanger to a 1/4 in. or to a 1/2 in. span cable.

960

The tether bracket shall attach to a 1/4 in. tether and prevent the bottom of the

head from moving side-to-side on the tether. Where backplates are installed on the

signal heads, the tether bracket shall be of the proper length for the backplate so that

the cable is mounted below the bottom of the backplate to avoid interference with head

alignment and damage to the backplate. Three bolts, nuts, and washers shall be used

to secure the tether bracket to a three-section or four-section signal head. A wire rope

clamp in accordance with 922.10(e)4c shall be used to secure the tether bracket to the

tether.

970

The tether bracket shall have predrilled 1/2 in. diameter holes. In lieu of the wire

rope clamp and 1/2 in. diameter holes, a beveled tether plate that completely fills in

the extruded portion of the tether bracket may be used to secure the tether bracket to

the tether. The tether bracket shall not extend more than 2 in. below the tether.

The multiple pipe arm assembly shall consist of a span hanger assembly, a balance

adjuster, a signal weatherhead, a two, three, or four- way pipe arm, 1 1/2 in. pipe, a

lower arm assembly, and all related hardware necessary for a complete assembly.

980

The two, three, or four-way pipe arms shall have a minimum of 2 in. of exposed

thread. Each arm of the pipe arm shall be furnished with two 72 serration locking rings.

One locking ring shall have a 3 in. outside diameter and one locking ring shall have a

2 3/8 in. outside diameter.

Assembly Maximum Allowable Weight

Two-way 19 lb

Three-way 25 lb

Four-way 28 lb

922.08Signal Cantilever Mount Signal Bracket

The bracket shall allow the following four adjustments:

922.08

1186

The bracket shall be fastened to the supporting arm or structure with stainless steel

bands. The bracket shall adjust to fit all sizes of round, octagonal, elliptical, or other

shape structure without special tools or equipment.

The bracket shall attach to the signal by clamping the signal head both top and

bottom and shall be designed to accommodate the specified signal configuration. Each1000

bracket shall be complete with all necessary hardware to attach the traffic signal to the

bracket and the bracket to the support.

All electrical wiring shall be concealed within the bracket, except that which runs

from the bracket to the signal cantilever arm.

Upper and lower arms shall be cast from aluminum in accordance with ASTM

B26, alloy 713.0-T5 or 356.0-T6. The vertical support tube shall be extruded from

aluminum in accordance with to ASTM B241, alloy 6061-T6 or 6063-T6, and the

strapping to attach the bracket to the arm shall be stainless steel. All steel or malleable1010

iron parts shall be hot-dip galvanized in accordance with ASTM A153 or be

mechanically galvanized and conform to the coating thickness, adherence, and quality

requirements of ASTM A153, B695, class 55.

922.09Pedestal Poles and Cast Aluminum Pedestal Bases

The pedestal base used for mounting pedestrian signal heads or control cabinets

shall be in accordance with 922.09(a). The length of the pedestal pole shall be as shown

on the plans.

A pedestal mounted G cabinet shall have a cast aluminum pedestal base. The

cabinet and pedestal base shall be ground mounted on a concrete Type A foundation

at locations and dimensions as shown on the plans.

The cast aluminum base shall be made of aluminum in accordance with ASTM

B179, alloy ANSI 319.1 or 319.2, or in accordance with ASTM B26, alloy ANSI 356.0

- T6. The square base shall include an access door and anchor bolts with nuts and

washers. The base shall be 13 3/8 in. square and 15 in. in height ±1/4 in. The weight

shall be 22 lb ±5%.

1030

The base shall be designed to support a 150 lb axial load and 11 sq ft of signal

head area rigidly mounted. For design purposes, the distance from the bottom of the

base to the center of the signal head area is 18 ft. In addition to the dead load, the base

shall be designed to withstand wind and ice loads on the specified signal head area and

on all surfaces of the support, in accordance with the AASHTO Standard Specification

for Structural Supports for Highway Signs, Luminaires and Traffic Signals. Wind

speeds used for design shall be based on a 10 year mean recurrence interval and a wind

drag coefficient of 1.2 or as shown on the plans. The base shall contain an access door,

which is 8 by 8 1/4 in. ±1/4 in. with a stainless steel hex head bolt for attaching the

door.1040

922.09

1187

The base shall be attached to a foundation by four anchor bolts, with an anchor

bolt circle of 12 3/4 in. Slotted lugs shall be integrally cast into the four corners of the

base for attachment of the anchor bolts. The anchor bolts shall be steel in accordance

with ASTM F1554, Grade 36. The diameter of the anchor bolt shall be 3/4 in. with a

minimum length of 18 in. ±1/2 in., plus 2 1/2 to 3 in. right angle hook on the unthreaded

end. The top 4 in. of the bolt shall be threaded with 10 NC threads. The threads, plus

3 in., shall be hot-dip galvanized in accordance with ASTM F2329 or be mechanically

galvanized and in accordance with the coating thickness, adherence, and quality

requirements of ASTM B695, Class 55. Each anchor bolt shall be provided with two1050

high strength heavy hex head nuts in accordance with ASTM A563 and three washers.

Two of the washers shall have a minimum 2 in. and maximum 2 1/8 in. outside

diameter and be in accordance with ANSI B 27, Type B regular series and one shall

be a nominal 3/4 in. series W washer, in accordance with ASTM F436.

The cast aluminum pedestal base shall be in accordance with the dimensions and

requirements shown on the plans. The casting shall be true to pattern in form and

dimensions, free from pouring faults, sponginess, cracks, blowholes, and free from

other defects in positions affecting the strength and value of the intended use for the

casting. The base shall not have sharp unfilleted angles or corners. The surface shall1060

have a workmanlike finish.

The door and bolt for the door shall be interchangeable on cast bases from the

same manufacturer.

The top of the base shall accommodate a pole having a 4 1/2 in. outside diameter.

The threads inside the top of the base shall be 4 in. national standard pipe threads. The

pole shall be either a steel pedestal pole or an aluminum pedestal pole.

1070

A steel pedestal pole shall be a seamless Schedule 40 carbon steel pipe in

accordance with ASTM A53, grade B. The pole shall have an outside diameter of 4

1/2 in. The pole shall weigh approximately 10.8 lb/ft. The length of the pole shall be

as shown on the plans. The pole shall have full depth national standard pipe threads

on one end of the pole. The length of threads shall be 2 1/2 in.

The pole shall be galvanized, after threading, in accordance with ASTM A123.

The threads shall be cleaned of all excess galvanizing and protected by a suitable

shield.

1080

An aluminum pedestal pole shall be in accordance with ASTM B241 for seamless

aluminum alloy, Schedule 40, 6061-T6. The outside diameter of the pole shall be 4

1/2 in. The length of the pole shall be as shown on the plans. The pole shall weigh

approximately 3.7 lb/ft. The pole shall have full depth national standard pipe threads

on one end of the pole. The length of threads shall be 2 1/2 in. and protected by a

suitable shield. The pole shall have a spun finish.

922.09

1188

A pole cap shall be supplied for the top of the pole if the pole is used for the

mounting of pedestrian signal faces or side mounted signal control cabinets. The pole1090

cap shall be either a cast pole cap of aluminum or a pole cap of spun aluminum.

A cast pole cap shall be made of aluminum, in accordance with ASTM B179,

alloy ANSI 319.1 or 319.2. The cap shall fit freely on the 4 1/2 in. outside diameter

pole. A set screw using a 3/4 in. No. 12 hex head machine screw shall be supplied to

hold the cap on the pole. A standard foundry draft will be allowed on the casting.

A pole cap made from spun aluminum shall be in accordance with ASTM B209,

alloy 1100-0. The cap shall fit tightly when placed on the end of the pole.

1100

922.10Signal Supports

All welding shall be in accordance with 711.32. Welds shall generate the full

strength of the shaft. Only longitudinal continuous welding will be allowed on the pole

shaft. Contacting joint surfaces shall be cleaned before fabrication then sealed by

means of welding. Working drawings shall be submitted in accordance with 105.02.

The steel strain pole shall be an anchor base type pole and shall include a handhole

and a pole top or cap. The poles shall be furnished in lengths specified.

1110

The pole shall have a handhole within 18 in. of the base. The pole shall have a top

or cap with a set screw that can be removed with small hand tools.

The pole material shall be in accordance with ASTM A595 or A572 with a

minimum yield strength of 50,000 psi. The pole shall be galvanized after fabrication

in accordance with ASTM A123.

All hardware, handhole cover and latching device, and band-type steel polebands

shall be hot-dip galvanized in accordance with ASTM A153 or be mechanically

galvanized and conform to the coating thickness, adherence, and quality requirements1120

of ASTM B695, Class 55. All nuts and bolts, except anchor bolts, shall be in

accordance with ASTM A307, and shall be either hot dip galvanized in accordance

with ASTM F2329 or mechanically galvanized in accordance with ASTM B695, Class

55. If a cast pole top or cap is used, it shall be in accordance with ASTM A126 and

shall be galvanized with a minimum coating of 2 oz/sq ft.

The polebands shall fit the pole as planned. The wire rope shall not be in contact

with any 90° edges or with any threads on the band. The pole band material shall be

in accordance with ASTM A572, grade 50; ASTM A606; or ASTM A36 with

minimum yield of 50,000 psi. The minimum width of the bands shall be 3 in. and the1130

bands shall be capable of supporting the pole design load. Each half of the band shall

be stamped with the corresponding size number.

922.10

1189

The pipe coupling for the weatherhead and base plate shall be installed prior to

galvanizing. The threads shall be cleaned of all excess galvanizing. An internal J-hook

shall be installed near the top of the pole for wire support.

The steel strain pole shall be capable of supporting an 8,000 lb load applied

horizontally 18 in. below the top of the pole with a maximum allowable deflection of

0.16 in. per 100 lb of load. The pole shall be tapered 0.14 in./ft of length.1140

A one-piece base plate shall be secured to the base of the pole and shall develop

the full strength of the pole. The base plate material shall be in accordance with ASTM

A36, ASTM A572, or ASTM A588. The base plate shall have four holes of adequate

size to accommodate 2 1/4 in. anchor bolts. The bolt circle shall have a 22 in. diameter

and bolt square of 15 1/2 in.

Four high strength steel anchor bolts, 2 1/4 in. in diameter and 96 in. long,

including the hook, shall be furnished with each pole. Each bolt shall have two heavy

hex nuts and two washers in accordance with ASTM A563 and F436 respectively. The1150

anchor bolt material shall be in accordance with ASTM A576 or ASTM A675 with a

minimum yield strength of 55,000 psi or ASTM A36, special quality, modified to

55,000 psi or approved equal. The threaded end of the anchor bolt shall have 12 in. of

4 1/2 NC threads and shall be galvanized the length of the threads, plus 3 in. The

threaded end shall be hot-dip galvanized in accordance with ASTM A153 or be

mechanically galvanized in accordance with ASTM B695, Class 55. The unthreaded

end of the anchor bolt shall have a standard L bend for a distance of 9 in. from the

centerline of the anchor bolt to the end of the L. In lieu of the standard bend a steel

plate 4 1/2 sq in. and 1 1/4 in. thick may be welded to the embedded end of the anchor

bolt.1160

Timber strain poles shall be made from southern yellow pine and shall be in

accordance with the current ANSI Specifications and Dimensions for Wood Poles

No. 05.1. They shall be of the length and class specified.

All poles shall be full length pressure treated by the full cell process in accordance

with current specifications as set forth in the AWPA Standards T1 and U1, Commodity

Specification D: Poles, use category UC4B using preservative as outlined in 911.02(h).

1170

Treatment, handling, and storage methods shall be in accordance with the current

AWPA Standards.

All traffic signal cantilever structures, with or without combination arm, shall be

as shown on the plans.

922.10

1190

There shall be no threads in the wearing surface plane at the point of connection1180

between the clevis clamp and the signal face assembly. The clevis clamp shall have an

11/16 in. diameter bolt hole to receive the signal face assembly.

The signal cantilever structure pole, sections 1 and 2, signal arm, and combination

arm shall be a round or multi-sided tapered tube, except the upper 4 to 6 ft of a signal

pole may be non-tapered. The pole and arms taper rate shall be 0.14 in./ft. A 1/2 in. 13

NC threaded grounding nut or approved equivalent shall be provided and be accessible

through the handhole. The pole cap shall be secured in place with setscrews. The pole

shall be provided with a removable pole cap and integral wire support hook for the

luminaire electrical cable. The cable shall be attached to the hook by a service drop1190

clamp.

The signal cantilever arm and combination arm, if required, shall be attached to

the pole as shown on the plans. The arms shall have cable inlets as shown on the plans.

All signal heads on the arm shall be attached as shown on the plans, installed parallel

to the horizontal plane, and centered to the cantilever arm. The cantilever arms shall

be used as an enclosed raceway for wiring and shall be free of burs or rough edges.

The pole top luminaire for roadway lighting, if required, shall be installed on these

structures as shown on the plans.1200

A one-piece anchor base plate shall be supplied as shown on the plans. Four

removable bolt covers shall be provided with each base and each cover shall attach to

the upright portion of the body of the base by means of one-hex head cap screw.

The signal cantilever pole, arms, base plates, arm flange plates, gusset plates, ring

stiffeners, and pole splice plates shall be in accordance with ASTM A595 or A572

with a minimum yield strength of 50,000 psi.1210

High strength heavy hex bolts for the pole splice shall be in accordance with

ASTM F3125, grade A490 and shall be coated in accordance with ASTM F1136,

Grade 3, ASTM F2833, Grade 1, or ASTM F3019, Grade 4, as shown in ASTM F3125.

The contact area for both pole splice plates shall be class B in accordance with

AASHTO Standard Specifications for Highway Bridges, Table 10.32.3C with a

minimum slip coefficient of 0.5. The surfaces shall be blast cleaned with class B

coatings. The arm flange plate connection bolts shall be in accordance with

ASTM F3125, grade A325. All other hardware shall be in accordance with ASTM1220

A307 and by either hot dip galvanized in accordance with ASTM F2329 or

mechanically galvanized in accordance with ASTM B695, Class 55. A cast pole cap

shall be in accordance with ASTM A126 and shall be galvanized with a minimum

coating of 2 oz/sq ft.

922.10

1191

Four steel anchor bolts, each fitted with two high strength heavy hex nuts and two

flat washers, shall be furnished with each pole. The anchor bolt shall be as shown on

the plans with a minimum of 15 in. of 7 NC threads on the upper end. The threads,

nuts, and washers shall be either hot dip galvanized in accordance with ASTM F23291230

or mechanically galvanized in accordance with ASTM B695, Class 55. The steel for

the bolt shall be in accordance with ASTM F1554, with a yield strength of 36,000 or

55,000 psi.

All steel material shall be fully galvanized. Galvanizing shall take place after all

welding is accomplished and holes cut.

Working drawings and design calculations shall be submitted in accordance with1240

105.02

Pole anchors shall be 8-way expanding with a minimum area of 135 sq in. when

expanded or a 10 in. diameter screw anchor. They shall have a minimum holding

strength of 10,000 lb. They shall be painted and in accordance with ASTM A575.

Anchor rods for expanded anchors shall be 3/4 in. diameter steel and for screw anchors

shall be 1 1/4 in. diameter steel, 8 ft long, in accordance with ASTM A659, and be

galvanized in accordance with ASTM A153.

1250

Guy guards shall be made of 18 gauge galvanized steel, polyethylene, polyvinyl

chloride, or melamine phenolic, and shall be 7 ft long. The steel guy guard shall have

a tight gripping, non-scarring hook for quick attachment to the guy wire. The bottom

shall have a clamp that fits over the anchor rod and securely grips by tightening the

bolt. Steel guy guards shall be in accordance with ASTM A659. The nonmetallic guy

guard shall be a helical pigtail which shall resist upward movement, a lock strap to

secure the lower end, and a guy guard sleeve. Non-metallic guy guards shall be gray

or yellow.

Messenger cable shall be zinc-coated steel wire strand, contain seven wires, and

have a nominal diameter of 3/8 in. The cable shall be in accordance with ASTM A475,

Siemens-Martin Grade.

Span, catenary, and downguy cable shall be aircraft cable for non-aircraft use, be

3/8 in. nominal diameter, made of stainless steel wire, and consist of seven, 19-wire

922.10

1192

flexible steel strands. The 3/8 in. cable shall have a minimum breaking strength of1270

12,000 lb. It shall be in accordance with Military Specifications MIL-W-83420D.

Tether and support cable shall be aircraft cable, for non-aircraft, and shall be 1/4

in. nominal diameter, made of stainless steel wire, and consist of seven, 19-wire

flexible steel strands. The 1/4 in. cable shall have a minimum breaking strength of

6,400 lb. It shall be in accordance with Military Specifications MIL-W-83420D.

1280

Messenger hangers shall be either a 3-bolt clamp or a 3/8 by 1 3/4 in. steel hanger

with a 90° bend extending from the pole 3 3/4 in. The hanger shall have a curved

groove and clamp capable of receiving a 5/16 to 1/2 in. cable.

The messenger shall be clamped by two 1/2 in. high carbon steel bolts. The angle

hanger shall be mounted with a 5/8 in. through bolt and a 1/2 in. lag screw. The three-

bolt clamp shall be mounted with a 5/8 in. through bolt. The angle hanger shall be in

accordance with ASTM A575. The bolts shall be in accordance with NEMA PH 23.

1290

Cable rings shall be galvanized steel in accordance with IMSA 51-1.

Clamps shall be made of 3/8 in. steel and in accordance with ASTM A575.

Two bolt clamps shall be a minimum of 3 3/4 in. long and 1 1/4 in. wide with two

1/2 in. bolts which shall clamp cable of 1/8 to 1/2 in. diameter.

Three bolt clamps shall be a minimum of 6 in. long and 1 5/8 in. wide with three1300

5/8 in. bolts which shall clamp cable of 5/16 to 1/2 in. diameter.

The bolt heads shall be large enough to provide maximum clamping area and shall

have oval shoulders to prevent the bolts from turning while tightening. The bolts shall

be in accordance with NEMA PH 23.

Servi-sleeves shall be 1 1/4 to 2 1/4 in. in length and shall hold the size of the

cable specified. The sleeves shall be in accordance with ASTM A659.

1310

Straight eye-bolts shall be 3/4 in. diameter drop forged steel, a minimum of 14 in.

long, and have 6 in. of thread. The steel washers shall be 2 1/4 by 2 1/4 by 3/16 in. in

size with a 13/16 in. hole in the center. All parts shall be in accordance with

ASTM A575 and shall be galvanized in accordance with ASTM A123.

922.10

1193

Hub-eyes shall be made of drop forged steel and in accordance with ASTM A575.

They shall receive a 3/4 in. mounting bolt and have a full rounded thimble eye for

protection of the guy cable.1320

922.11Signal Cable

Signal hook-up wire shall be stranded one conductor wire, Type THW seven

strand No. 14 AWG, with a thermoplastic sheath 3/64 in. thick and a 600 volt rating.

Insulation shall be color-coded, as required, and labeled with gauge, voltage rating,

and insulation type.

Signal control cable shall be in accordance with IMSA 19-1 or 20-1 and shall be

stranded No. 14 AWG wire.

Traffic signal service cable shall be color coded, stranded copper No. 8 AWG

wire, three conductor cable, Type THWN.

922.12Signal Interconnect

Integral aerial interconnect cable shall be figure “8” self-supporting type cable

consisting of a messenger cable and seven conductors No. 14 AWG signal cable in

accordance with IMSA 20-3.

Six pair telemetry cable shall contain six twisted pairs of 19 gauge conductors and

shall be in accordance with IMSA 40-2 for underground application and IMSA 40-4,

integral messenger, for aerial application.

Fiber optic cable shall contain 12-strand multimode, graded index, optic fibers

with a minimum of one non-metallic central strength member. The cable shall be gel-

free design, loose tube, all dielectric construction, suitable for outdoor use in conduit

or on aerial supports. Each length of fiber optic cable in nonmetallic conduit shall

include a No. 14 AWG aluminum or No. 6 AWG copper tracer wire.

Each individual fiber shall be 2.5/5 mils (62.5/125 μm) diameter, core/color-

coded clad, and each color-coded set of fibers shall be encased in a loose tube buffer

with water blocking tape on the outside and fully water blocked inside using craft-

friendly, water-swellable yarns. The fiber optic cable shall be constructed with Kevlar1360

braid and outer polyethylene jackets as a minimum. If an inner jacket is used, it shall

922.12

1194

be PVC. Maximum attenuation of the cable shall be 4.0 dB/km nominal, measured at

room temperature at 850 nm. The bandwidth shall not be less than 160 MHz/km, also

at 850 nm. Each fiber shall be continuous with no factory splices except for joining

standard length cables to form longer, continuous jacketed cable to fit installation

requirements. The cable shall have standard nylon rip cords. Kevlar rip cords will not

be accepted.

The cable shall be in accordance with the generic requirements for optical fiber

and optical fiber cable per ANSI/ICEAS-104-696 design and test criteria.1370

The exterior of the polyethylene outer cable jacket shall be stenciled so that every

16.4 ft on each reel is marked with a number. The 16.4 ft of each reel shall be marked

with a 5, the 32.8 ft marked with a 10, and so on until the end of the reel. The stencil

shall be applied to the outer jacket using permanent ink and shall be permanently

engraved into the jacket to provide long lasting readability.

Spread spectrum radio modems for communications between local controllers and

the system master controller shall be on the QPL of Traffic Signal and ITS Devices.1380

922.13Detection Components

Runs 700 ft and less of loop detector lead-in cable shall be in accordance with

IMSA 50-2 and shall be stranded two conductor No. 16 AWG, 19 strands of No. 29

wire.

Runs greater than 700 ft shall use 14 AWG wire. The nominal capacitance

between conductors shall be 57 pF/ft and 98 pF/ft between one conductor and the other1390

conductor connected to the shield.

Roadway loop wire shall be 14 AWG gauge IMSA 51-7 duct-loop wire with

polyvinyl chloride or polyethylene outer jacket of 1/4 in. diameter.

Other vehicle detection systems shall be selected from the QPL of Traffic Signal

and ITS Devices.

1400

922.14Ground Wire

The ground wire shall be copper wire No. 6, AWG soft-drawn, solid copper in

accordance with ASTM B3.

922.15Splicing Kit

Splicing kits shall contain a two-piece, transparent snap-together mold body and

include an epoxy and sealing compound contained in a unipak. It shall be capable of

922.13

1195

insulating and splicing nonshielded cables rated up to 5 kilovolts and multi-conductor

cables rated up to 600 volts.

1410

922.16Ground Rod and Connections

Ground rods shall be 1/2 in. in diameter by 8 ft long with a machined point and

chamfered top. They shall be made of steel with a molecularly bonded outer layer of

electrolytically applied copper. A single electrode shall have a maximum resistance to

ground of 25 ohms. Single electrodes that do not have resistance to ground of 25 ohms

or less shall be augmented by additional electrodes, grids, or plates until resistance to

ground of 25 ohms or less is achieved. Resistance shall be measured using a three-

point ground tester using the fall of potential method. Data, graphs, resistance in ohms,

date of test, make and model of ground tester, and the individual’s initials performing

the test shall be recorded and submitted to the District Office. Resistance in ohms shall1420

be tagged at the ground connection.

The finished rod shall be cold-drawn and shall have the following minimum

physical properties:

Physical Property Value

Tensile strength, min. 97,000 psi

Yield strength, 0.2% offset, min. 85,000 psi

% of elongation 13 - 40

The ground rod and wire connection shall be made by a thermo weld process or

approved equal. The welding material shall cover and secure the conductor to the rod

and shall be porous free.

1430

An acceptable alternate shall be a ground grid connection properly sized and shall

consist of a shear head bolt, a “C” shaped body, nest, and wedge. The connector

components shall be fabricated from an aluminum-bronze alloy, silicone-bronze alloy,

or copper.

922.17Handholes

A Type I handhole shall be made of class III reinforced concrete pipe with a cast

iron ring and cover. The concrete shall be in accordance with section 907.02.1440

Reinforcement shall be provided as shown on the plans or in accordance with the

manufacturer’s design. If reinforcement deviates from the plans, provide calculations

showing that the modified design supports HS-20-44 loading. The ring and cover for

handholes shall be in accordance with 910.05(b).

A Type II handhole shall be made of polymer concrete or other material that is

certified to be in accordance with ANSI/SCTE 77 and meet or exceed Tier 22 loading

requirements. The handhole shall be stackable.

922.17

1196

1450

The handhole box shall be heavy duty. The inner surface of the handhole shall be

smooth and free from cracks and imperfections.

The cover shall be marked with logo imprints of “TRAFFIC SIGNAL” and the

ANSI/SCTE Tier rating - “TIER XX”. The cover shall be secured with stainless steel,

300 series, 3/8 in., 16 NC hex bolts and washers. The cover shall have a friction

coefficient of at least 0.5.

1460

A Type III handhole shall be AASHTO HS-20 rated. The handhole box shall be

concrete. The ring and cover shall be steel and shall be secured to the handhole box.

922.18Entrance Switch

The entrance switch shall be a double pole, 50A, 120V AC circuit breaker in a

NEMA Type 3R enclosure in accordance with NEMA 250-2008. The minimum

dimensions of the enclosure shall be 5 in. wide, 3 3/4 in. deep and 9 1/4 in. high. A 1

in. rain-tight detachable hub shall be supplied in the top of the enclosure. The enclosure

shall have knockouts on the sides, bottom and back with diameters of 7/8 in. to 1 3/41470

in. The enclosure shall contain the circuit breaker, an insulated solid bar for connection

of AC neutral, a separate lug for attachment of earth ground, have provisions for a

padlock, and shall be surface mounted.

The enclosure shall be made of galvanized steel with a rust inhibiting treatment

and finished in the manufacturer’s standard color of baked enamel.

All wire terminations and breaker to buss-bar contact points inside the enclosure

shall be coated with an anti-oxidant to prevent oxidizing and corrosion of components.

1480

922.19Conduit and Fittings

Steel conduit, couplings, and elbows shall be galvanized rigid steel conduit in

accordance with UL 6. The conduit shall be galvanized by the hot dip method on the

interior and exterior surfaces. Conduit threads shall be cut after galvanizing. The

conduit shall be supplied with a threaded coupling attached to one end and the other

threaded end protected by a suitable shield.

The various conduit fittings such as bands, bodies, straps, lock nuts, and threadless1490

connectors, shall be in accordance with Federal Specifications A-A-50553, and shall

be galvanized if not stainless steel. Conduit straps shall be two hole straps with a

minimum thickness of 1/8 in. Conduit lock nuts 3/8 to 1 1/2 in. in size shall be made

of steel. Other sizes shall be made of either steel or malleable iron. All conduit lock

nuts shall be galvanized. Other nuts shall be either stainless steel or galvanized steel.

922.18

1197

Conduit, fittings, and accessories shall be manufactured from PVC meeting

ASTM D1784 and shall comply with all the applicable requirements of NEMA TC2

and UL 651. Each length of pipe shall include a coupling.1500

Rigid fiberglass conduit and fittings shall be filament wound consisting of E-glass

and corrosion resistant epoxy resin manufactured for use at temperatures from -40 to

230°F. Rigid fiberglass conduit shall be pigmented with carbon black for ultraviolet

protection and fire resistant per UL 94. All rigid fiberglass conduit shall have tracer

wire, be heavy walled, HW, and meet the specifications, labeling, and testing of

ANSI/NEMA TC9.

Conduit shall be smooth wall, Type III, Grade P-33, Category 5, Class C, coilable,

HDPE. SDR 13.5 may be used for Schedule 40 HDPE and SDR 11 may be used for

Schedule 80. Conduit and fittings shall meet the applicable requirements of ASTM

D1248, ASTM D3350, ASTM F2160 and UL 651.

Schedule 40 or 80 HDPE conduit shall be marked in accordance with ASTM

D3485 with the producer code and designation type indicated. HDPE conduit shall be

produced from material with an orange color and ultraviolet stabilization code of C,

D, or E in accordance with ASTM D3350. Schedule 40 HDPE conduit for use above

ground shall be black.1520

922.20Detector Housing

The entire housing casting shall be made from aluminum alloy in accordance with

ANSI 320.

922.21Certification

A Type C certification in accordance with 916 shall be provided for traffic signal

materials and equipment unless otherwise specified.