ITEM 632 TRAFFIC SIGNAL EQUIPMENT
632.01 Description
632.02 Contractor Personnel Requirements
632.03 Materials and Equipment
632.04 Certified Drawings
632.05 General
632.06 Vehicular Signal Head,
Conventional
632.07 Vehicular Signal Head,
Optically Programmed
632.08 Pedestrian Signal Head
632.09 Pedestrian Pushbutton
632.10 Loop Detector unit
632.11 Detector Loop
632.12 Magnetometer Detector unit
632.13 Magnetometer Sensor Probes
632.14 Foundations
632.15 Signal Support
632.16 Strain Pole
632.17 Wood Pole
632.18 Down Guy Assembly
632.19 Pedestal
632.20 Conduit Riser
632.21 Cable Support Assembly
632.22 Messenger Wire
632.23 Cable and Wire
632.24 Power Service
632.25 Covering of Vehicular and Pedestrian Signal Heads
632.26 Removal of Traffic Signal Installation
632.27 Reuse of Traffic Signal Equipment
632.28 Testing
632.29 Method of Measurement
632.30 Basis of Payment
632.01 Description. This work consists of
furnishing and installing traffic signal equipment, complete and ready for
service. This work also includes
necessary excavation and backfill, disposal of discarded materials, restoration
of disturbed facilities, and surfaces to a condition equal to that existing
before the Work started, and electrical testing as specified.
Pull boxes, conduits, ground rods, and cable splicing
kits required for traffic signal equipment installations are specified in Item 625.
632.02 Contractor Personnel Requirements. Conform to the requirements of
Supplement 1063
for the installation or testing of traffic signal equipment.
632.03 Materials
and Equipment. Furnish
new materials and equipment of first quality, of current design, and free from
defects.
Use electrical parts, wire, switches, and other
elements of the installations capable of carrying the required current without
excessive heating or drop of potential.
Ensure that major items or assemblies of equipment
bear a nameplate, indelible marking, or brand that identifies the type, model,
catalog number, and manufacturer.
Furnish materials and equipment conforming to:
Concrete,
Class C................................................. 499, 511
Steel*:
.... Poles,
supports, arms, appurtenances
.... and anchor bases...................... 730.02, 730.03, 730.04,
...................................................... 730.05, 730.06, 730.07,
.................................................................... 732.12, 732.11
.... Pedestals............................................................. 732.15
.... Hardware............................................................ 730.08
.... Stainless steel hardware...................................... 730.10
Other Items:
.... Conduit, rigid........................................ 725.04, 725.
05
.... Ground rod......................................................... 725.16
.... Pull boxes.................................. 725.06, 725.07, 725.08.........
.... Identifying tags or bands.................................... 725.02
.... Signal heads.................. 732.01, 732.02, 732.03, 732.05
.... Lamps................................................................. 732.04
.... Pushbuttons........................................................ 732.06
.... Detectors.................................. 732.07, 732.08, 732.09
.... Probes................................................................. 732.10
.... Wood poles......................................................... 732.13
.... Down guys......................................................... 732.14
.... Conduit risers..................................................... 732.16
.... Cable supports................................................... 732.17
.... Messenger wire................................................... 732.18
.... Cable and wire.................................................... 732.19
.... Power service...................................................... 732.20
.... Disconnect Switch with enclosure...................... 732.21
* Acceptance of materials and products is based on
certified test data, furnished in triplicate, or on test results of samples
according 106.04, as required by the Laboratory.
Furnish vehicular signal lamps
conforming to 732.04 with incandescent lamps prequalified according to Supplement 1046.
632.04 Certified
Drawings. Furnish certified drawings according to 625.06.
632.05 General. Ensure that major items of traffic signal
equipment used in combination are compatible, interchangeable, and, whenever
feasible, provided by the same manufacturer or supplier. Furnish electrical materials, equipment, and
installations according to the National Electrical Code and the National
Electrical Safety Code, and conform to local laws and codes.
Ensure
that the traffic control equipment installed in controller cabinets are shop prewired according to a wiring diagram that conforms to
plan and specification requirements of the specific project and intersection,
and show all wire harness and field connections required, with abbreviations
according to Table 632.05-1.
Furnish a neat and legibly drawn wiring diagram, reproduced on durable
paper, and place two copies in a plastic envelope fastened to the inside of the
controller cabinet.
Identify
cable and wire by tags or bands at pull boxes and controller cabinets, with
size, material, and method of marking that conform to 725.02, except ensure that the
identification on the tags or bands conforms to the wiring diagram with
abbreviations according to Table 632.05-1.
The Contractor may
identify field wiring using an indelible pen on a plastic tag instead of embossed
letters.
Use
spade terminals for wiring connected at signal heads and the wiring connected
at terminal blocks within controller cabinets.
However, for incoming power wiring, use either spade terminals or bared
conductor wire connected to terminal points utilizing screw or spring applied
clamping surfaces compatible with both cooper and aluminum wire and providing a
positive grip. Neatly lash and fasten
completed wiring to interiors with clamps and/or ties.
Table
632.05-1 Table and Wire Identification
|
Cable
|
Tag
|
|
Ground
|
GND
|
|
Power
(2 wire)1Ć
120 volt
|
AC
+AC- or ACN
|
|
Power
(3 wire) 1Ć
120/240 volt
Neutral wire
|
AC
+ 1, AC + 2
AC- or ACN
|
|
Phase
A
Phase 1
Phase 1 northbound left turn lanes
|
Ć A
Ć
1
Ć
TLBN 1
|
|
Phase
A, pedestrian signal
|
Ć DP A
|
|
Overlap,
phase A + C
Overlap, phase 1 + 6
|
Ć C + A
Ć
6 + 1
|
|
Detector
lead-in, phase A
Detector lead-in, phase 1
Detector lead-in, phase 1
northbound left turn lanes
|
DET
A
DET 1
DET 1 NBLT
|
|
Detector
lead-in, phase A (call type)
Detector lead-in, phase 1
(call type) northbound thru lanes
|
DET
A CALL
DET 1 CALL
NB-THRU
|
|
Detector
harness[1]
|
DET
A
|
|
Interconnect
|
IC
|
|
Pre-emption,
fire
|
PE
FIRE
|
|
Pre-emption,
railroad
|
PE
RR
|
|
[1] Place the tag next to the MS plug at the
detector amplifier.
|
When
constructing the traffic control system, cooperate with the agency supplying
the electric service. Supply 120/240
volt, single-phase, three-wire (grounded neutral) power to the disconnect
switch.
After
completion of the 10-day performance test in compliance with 632.28 and until acceptance, the
Contractor is
responsible for the care and maintenance of traffic control equipment installed
or reused as part of the Contract.
Upon
acceptance of the project, transfer to the Department all manufacturers’
guarantees or warranties covering installed electrical or mechanical
equipment. Furnish two copies of wiring
diagrams, service manuals, and instructions on installation and maintenance for
each different type, model, or system of equipment used on the project.
632.06 Vehicular
Signal Head, Conventional. Furnish heads in arrangements such that from one
to a maximum of five sections assembled with the specified lens size, color,
and circular or arrow configuration form a specific signal face. Mount signal faces alone as a one-way head,
or combined with additional faces to form a two-way, three-way, or a maximum of
a four-way head.
Furnish
multi-way heads with top and bottom brackets for mounting purposes. Fit faces of lesser height in multi-way heads
with pipe spacers. Close openings unused
for mounting purposes with weatherproof caps.
Install
signals in a plumb condition, using a balance adjustor only if necessary. Fit heads mounted on mast arms, except those
intended to be rigidly mounted, with a universal hanger allowing the head to
swing in both longitudinal and transverse directions. Use drop pipes of suitable length only when
necessary to bring the bottom of the signal heads to a proper roadway
clearance. Use disconnect hangers for
suspended heads when specified.
Orient
each signal face to its traffic approach, and lock faces in place by the
serrated or other type device incorporated in signal housing and support hardware.
Install
incandescent lamps of the proper wattage and light center distance or, when
specified, LED lamps in each section.
Rotate lamp sockets positioning the open portion of the incandescent lamp
filament in an upward position.
632.07 Vehicular
Signal Head, Optically
Programmed. Furnish heads of this type consisting totally of
optically programmed sections unless an intermix of optically programmed and
conventional sections is specified.
Install lamps in each optically programmed section.
Program
each signal section according to the plan requirements. For 8-inch (200 mm) sections, use an extender
tool as recommended by the manufacturer to program each section. Upon completion of the project, deliver one
extender tool per project to the maintaining agency.
632.08 Pedestrian
Signal Head. Furnish heads with the type of light source and
symbol height specified. Orient each
signal head to its crosswalk, and lock heads in place by the serrated or other
type device incorporated in signal housing and support hardware. Close openings unused for mounting purposes
with weatherproof caps.
632.09 Pedestrian
Pushbutton. Properly orient and install pushbuttons on
poles or pedestals. Service pushbuttons
mounted on steel poles by wiring inside the poles. Furnish 3/4-inch (19 mm) diameter holes
through the back of the housing and the pole wall, install a rubber grommet,
and route wiring through until no external wiring is visible. Plug any unused conduit attachment
holes. Attach the housing by machine or
self-tapping screws in the housing back wall.
Service pushbutton mounted on wooden poles through conduit. Furnish pedestrian pushbutton signs of the
legend and size required.
632.10
Loop Detector unit. Install and tune detector
units to their loops with the sensitivity set for optimum operation and any
interference or cross talk eliminated between other detector units in the
cabinet. Perform a field check to ensure
that no extraneous detections are occurring by observing each detector unit’s
operation to determine that a signal occurs only when a vehicle enters its
associated loop. If actuations are
observed when there is no vehicle in the loop, eliminate the extraneous
detections.
632.11
Detector Loop. Saw slots in the pavement for installation of vehicle
detector loop wire in the configuration, dimensions, and combinations
required. Cut an extension from the loop
to the pavement edge to allow wire routing to an adjacent pull box.
Furnish
slots 1/16 to 1/8-inch (1.6 to 3 mm) wider than the outside diameter of the
loop wire or tubing. Ensure that the
slot depth provides a covering of not less than 3/4-inch (19 mm) above the
uppermost detector wire tubing after the loop installation is completed. Before installing loop detector wire, brush
and blow all slots clean of loose material and completely dry. Install loop detector wire according to 632.23.
Fill
the slots completely with a flexible embedding sealant, prequalified
according to Supplement 1048.
Do not disturb slots until sealant has cured.
For
loop detector wire installations in new asphalt, the Contractor may saw slots
and embed sealant in a subsurface course with subsequent covering by the
surface course, subject to the Engineer’s approval.
632.12
Magnetometer Detector unit. Install
detector units in cabinets; connect units to pavement embedded sensor probes.
632.13
Magnetometer Sensor Probes. Properly locate and
install probes in holes in pavement or bridge slabs. Form probe holes during concrete placement by
pouring around a vertical piece of capped PVC or other non-metallic conduit. Drill probe holes in existing pavement. Center probe positions on bridge slabs in the
steel reinforcing grid square nearest to the plan location using a metal
locator, such as a Pachometer. Install sensor probe leads in non-metallic
conduit, in sawed pavement slots, or by other design methods. Embed probes, and leads if installed in
slots, with flexible sealant according to 632.11.
632.14 Foundations. Locate support foundations, and
stake with the proper elevation. If
underground or overhead obstacles are encountered during stakeout, or to
correct slope and subsurface difficulties, change foundation location and
orientation with the approval of the Engineer.
Ensure that the approved location provides a safe clearance from overhead
power lines for construction operations, in compliance with the National
Electric Safety Code. The Contractor is responsible for the correct location,
elevation, and orientation for all poles and pedestals installed on the
foundations.
Excavate
for foundations using an earth auger to specified dimensions according to 503.04.
Exercise caution when excavating in areas of underground installations
to avoid their disturbance or damage.
When a cave-in occurs, excavate using casing, sleeving,
or other methods, with the Engineer’s approval. If subsurface obstructions are encountered,
remove the obstructions, or replace the excavated material and relocate the
foundation, with the Engineer’s approval.
If bedrock is encountered, the Contractor may reduce that portion of the specified
foundation depth within the bedrock up to 50 percent. Perform all necessary dewatering of the
excavation.
Perform
foundation concrete work according to Item 511, except that the loading restrictions
in 511.17 are modified by this
subsection. Place the concrete against
undisturbed soil or compacted embankment.
Form the top of the foundations to a nominal depth of 6 inches (150 mm)
below the groundline.
Place the concrete foundation,
including formed top, in one continuous concrete pour.
Before
placing foundation concrete for embedded supports, position and brace the
supports with any necessary rake to ensure that the supports, after tensioning,
assume an essentially vertical position.
For foundations for anchor base type supports, provide the required
reinforcing rods, and have anchor bolts and conduit ells accurately held by a
template.
Remove
forms and templates once the concrete has hardened sufficiently so as not to be
susceptible to damage. Remove bracing
for embedded supports after 7 days.
After 14 days, load embedded supports, and erect and load supports on
anchor base foundations. The Contractor may erect and load supports after 7 days if
the tests of two beam specimens of concrete yield an average modulus of rupture
of not less than 650 pounds per square inch (4.5 MPa).
632.15 Signal Support. Furnish supports with mast arms with
the required pole and arm length, anchor bolt circle diameter, and anchor bolt
size.
Ensure
that the combination signal supports with light pole extension provide for the
attachment of a luminaire bracket arm.
For
support designs not specifically shown on the plans, demonstrate, to the
Director’s satisfaction, that supports are structurally equivalent to the
specified design.
Furnish
individual anchor bolt covers or cover bases for poles erected in sidewalks,
traffic islands, curbed areas, and seeded areas of urban character as specified
in 659.09, or when directed by the Engineer.
Do not use concrete grouting in the space between the foundation surface
and support base.
Conform
to the requirements of 630.06 for threaded fasteners, anchor
bolts, anchor bolt nuts, and anaerobic adhesive.
632.16 Strain Pole. Furnish strain poles for the
attachment of messenger wire with the required pole
length. Use anchor base type strain poles
unless the type for concrete embedment is specified.
Ensure
that the combination strain poles with light pole extension provide for the
attachment of a luminaire bracket arm.
Adjust
anchor base type poles, and set embedded type poles with the initial rake so
that when loaded the poles assume an essentially vertical position.
Conform
to the requirements of 630.06 for threaded fasteners, anchor
bolts, anchor bolt nuts, and anaerobic adhesive.
Furnish
individual anchor bolt covers or cover bases under conditions as specified by 632.15.
632.17 Wood Pole. Set wood poles in holes excavated by
an earth auger to a minimum depth of 6 feet (1.8 m). Use an auger with a diameter approximately 4
inches (100 mm) greater than the pole butt.
Hold poles with initial rake, up to a maximum of 12 inches (0.3 m),
while tamping backfill into place, so that under messenger wire tensioning
conforming to 632.22, the poles assume an essentially
vertical position. Furnish backfill
material no greater than 1 inch (25 mm) in size, and thoroughly tamp material
in lifts not exceeding 6 inches (150 mm), to the satisfaction of the Engineer.
If concrete embedment is specified, brace the poles until the concrete
has set.
Liberally
coat field holes bored for the attachment of messenger or guy wire with
approved creosote base paint and fitted with 5/8-inch (16 mm) thimble-eye
through-bolts and 3-inch (75 mm) washers.
Securely attach and protect ground wire furnished as part of another
work item with a wood or plastic molding for a minimum distance of 10 feet (3
m) above groundline.
632.18 Down Guy
Assembly. Install
and tension guy assemblies before erecting signals such that they will resist
the major portion of the horizontal loading caused by loading of the messenger
wire.
632.19 Pedestal. Furnish pedestals for the support of traffic control
equipment with a cast or plate steel base, unless a transformer type base is
specified.
632.20 Conduit Riser. Attach risers to poles to provide a
wiring raceway and include a weatherhead, conduit,
necessary fittings, and pole attached clamps.
Attach risers to poles by clamps spaced at intervals not exceeding 5
feet (1.5 m). Paint conduit risers mounted on painted poles to
match the poles.
632.21 Cable Support Assembly. Use cable support assemblies to
eliminate strain on cables, or groups of cables up to a maximum of four,
entering the interior of poles through a weatherhead
or mast arm. If required, include a
length of messenger wire forming a sling with ends formed of lapped wire,
thimbles, and clamps as part of the assembly.
632.22 Messenger
Wire. Arrange
messenger wire with accessories between two or more poles to provide support
and attachment for traffic control equipment.
Accessories used with messenger wire include bullrings, thimbles,
preformed guy grip dead ends, and three bolt clamps. Furnish bullrings at messenger wire network
corners. Use thimbles to attach
messenger wire to the shackles of strain pole clamps and bullrings.
Adjust
the length of the messenger wire under the load of traffic control equipment so
the sag at the lowest point is not greater than 5 percent or less than 3
percent of the span. Attach signal cable
to messenger wire with lengths of preformed helical lashing rod that are of a
proper internal diameter to tightly secure the cable to the messenger
wire. Attach interconnect cable with
preformed lashing rod or spinning wire.
632.23 Cable and Wire. Fashion
cable at traffic signal equipment weatherhead
entrance fittings into a drip loop that extends at least 6 inches (150 mm)
below the entrance. Do not allow the
cable to chafe on the equipment. Support
cables installed in strain poles and signal supports with cable support
assemblies according to 632.21.
Do
not use splices in any cable or wire, except at the following locations:
A. At the junction of detector wire and
lead-in cable.
B. At the junction of power cable and the
power supply source or service cable.
C. On long lengths of interconnect or service
cable.
For
splices allowed in aerial installations, accomplish splicing in weather tight
splice enclosures. For splices allowed
in underground installations, accomplish splicing in pull boxes or poles where
the splice is encapsulated with poured waterproof epoxy insulation according to
725.15.
Install
signal cable between signal heads and controller cabinets, and install
interconnect cable between controller cabinets of different intersections. Route signal and interconnect cable by aerial
installation supported by messenger wire or within underground conduit. If specified, use aerial self-supporting
integral messenger type interconnect cable with a figure “8” cross-section and
include pole clamps and splice enclosures.
Ground the supporting messenger wire of interconnect cable.
Provide
loop detector wire consisting of detector wire inserted into flexible plastic
tubing. Ensure that the tubing encases
the wire continuously from the splice at the lead-in cable, through the entire
loop turns, and back to the splice.
Install loop detector wire in sawn roadway slots forming loops according
to 632.11.
Furnish the required number of turns of wire installed for each loop,
and push the wire carefully into the slots with a blunt tool to avoid damaging
the tubing. Run the wire continuously
around the loop perimeter and through a slot leading to the pavement edge and
by underground conduit to a roadside pull box or pole with 5 feet (1.5 m) at
each end for slack and splice. uniformly
twist wires and tubing installed in the conduit to the splice with lead-in
cable at 3 to 5 turns per foot (10 to 16 turns per meter). Splice the loop ends to lead-in cable, which
are connected to the controller cabinet.
Join the wires by a mutually twisted in-line splice, rosin core
soldered, and wrapped in vinyl or equivalent electrical tape, and encapsulate
wires with an approved poured waterproof epoxy insulated splice according to 725.15.
Extend and seal the tubing ends into the poured epoxy splice. Also, solder crimped terminals to the
conductors and the shield for connections inside the cabinet.
For
magnetometer sensor probe installations, splice the leads from the probes to
the specified lead-in cable by the same method.
Route lead-in cable within underground conduit or by aerial installation
supported by messenger wire.
Install
power cable from the power supply source to the controller cabinet. If multi-conductor power cable is specified,
the Contractor may substitute multiple single conductors.
Install
service cable aerially from a remote power source to the vicinity of the
controller cabinet with the support cable functioning as the electrical
neutral. Furnish connections used with
aluminum power or service cable of an approved type for aluminum to aluminum or
aluminum to copper connections, and insulate connections with an approved vinyl
mastic pad.
632.24 Power
Service. Furnish and install all equipment
necessary to provide complete electrical service to each signal installation as
shown on the plans. Make all necessary
arrangements with the local electrical power company for connections to
establish electrical service. The
Department will reimburse the Contractor by Supplemental Agreement for power company
fees for establishment of service and electricity. This compensation is for invoiced cost
without mark up.
Power
service consists of equipment to provide a pole
attached wiring raceway and disconnect switch for use with
power cable routed from the service entrance to the controller cabinet. The power service installation includes a weatherhead, conduit and fittings, a disconnect switch with
enclosure, meter base and attachment clamps.
Terminate
the conduit riser at an electric meter base or at the disconnect switch
enclosure. Bend the conduit away from the
pole at the top and bottom of the riser to allow the conduit to enter straight
into the enclosure or meter base hub, and to provide space for the weatherhead when the riser is pulled tight against the
pole. Furnish watertight conduit
connections between the meter base and enclosure by using conduit hubs listed
on the enclosure UL label.
From
the switch enclosure, make a connection to either a controller cabinet, a pull
box, an underground conduit, or a conduit riser. Ground the switch enclosure neutral bar
directly to the pole grounding lug.
Paint conduit risers mounted on painted poles to
match the poles.
632.25 Covering of
Vehicular and Pedestrian Signal Heads. Cover vehicular signal heads if
erected at intersections where traffic is maintained before energizing the
signals. Cover pedestrian signal heads
when specified in the plans. Use a
sturdy opaque covering material and method of covering and cover attachment as
approved by the Engineer.
Maintain covers, and remove and dispose of them when directed by the
Engineer.
632.26 Removal of
Traffic Signal Installation. Remove signal heads, cable,
messenger wire, strain poles, cabinet, controller, or other incidental items
required by the Engineer.
Remove support foundations to at least 1-foot (0.3 m) below subgrade or finished groundline. Backfill, restore surfaces, and dispose of
surplus material according to 603.09.
Store removed items on the project for salvage by the maintaining
agency, or reuse removed items as part of a new installation on the project
under another item of work. Dispose of
all items not designated for salvage or reuse.
As specified in 614.03, do not remove signals until a new
signal system or a temporary traffic control method approved by the Engineer is
in operation. Suitably protect stored
equipment.
632.27 Reuse of
Traffic Signal Equipment. Reinstall or re-erect specified
traffic equipment, removed from existing signal installations within the
project. Clean and restore reused
equipment to an operating condition, and relamp
signals with the proper type and size lamp.
Furnish all additional hardware and incidentals necessary to allow reuse
of the equipment.
632.28 Testing.
A. General. Furnish all personnel and equipment required to
successfully perform the following tests, and furnish to the Engineer six certified
copies of complete test records, test reporting forms supplied by the Engineer,
or alternate certification approved by the Engineer.
B. Ground Test. Measure each ground rod for earth resistance
according to 625.19, except that measurements are not
necessary immediately after installation.
C. Short-Circuit Test. Before performing any cable insulation tests or
performance test, perform a short-circuit test with a volt-ohmmeter or other
approved instrument. Conduct
short-circuit tests with electrical loads, power sources, equipment grounds,
and earth grounds disconnected. Test
signal cable routed to signal heads with connections made to lamp sockets
without lamps installed. Measure each
conductor against every other conductor and ground to ensure that no
short-circuits, cross-circuits, or other improper connections exist. Ensure that continuity does not exist between
any conductor and another conductor including ground.
D. Circuit Continuity Test. Temporarily jumper each circuit branch at its
termination and the temporarily looped circuit measured for continuity to
ensure that no open circuits exist, that the circuit branch is according to
plan, that no high resistance connections exist, and that each circuit is
properly identified. Test the lead-in
cable for loop detector wire before and after splicing the cable to the loop
wire. As an alternative, perform the
circuit continuity testing of signal head cable by applying 120 volts to each
outgoing circuit and observing that only the proper lamps are lighted.
E. Cable Insulation Test. Ensure that the insulation resistance measured to
ground is not less than 10 megohms for each conductor
of cable or wire terminating at the controller cabinet. Perform insulation testing with all
conductors disconnected from their points on the terminal blocks. Measure insulation resistance for the wire of
roadway loops after the embedding of the wire with sealant in slots. Include a list of the resistance readings for
each conductor in the test results.
After completing the cable insulation test, connect all cabinet wiring
according to the wiring diagram.
Demonstrate to the satisfaction of the Engineer that all
circuits are continuous and operating correctly with freedom from shorts,
crosses, and unintentional grounds.
F. Functional Test. Before the 10-day performance test begins, make the
following checks and demonstrate to the Engineer that the
system is ready for the performance test.
Ensure that the incoming AC voltage is a nominal 120 volts. If the supplied voltage under load is less
than 100 or more than 130 VAC, contact the power company to arrange
correction. Ensure that the cabinet
ventilating fan, fan thermostat, and convenience outlet with lamp is operational. Correct timing settings on the controller as shown on the plans. Check all cabinet switches including the
power on/off switch and flash switch.
Check all controller functions to verify correct operation. Check the detector units to determine which
pavement loop is associated with which detector unit. Check the visual indication of detector units
to determine that each vehicle class (truck, car, or motorcycle) entering
sensor areas is detected on the associated detector unit and that no extraneous
calls occur when the sensor area is vacant.
Check the flash switch to verify transfer of signal operation to flash
and return to stop-and-go. Check the conflict monitor to verify that it is not activated
by normal signal operations or by the manipulation of cabinet switches. If the monitor is activated, determine the
cause of the problem and make appropriate changes and adjustments before
beginning the performance test. Test the
conflict monitor by artificially causing a number of different conflicting
indications, and verify that at each test the monitor causes the signals to
begin flashing and places the controller in a “stop timing” mode. Obtain artificial causation either by
touching a jumper wire between two conflicting load switch outputs or by other
methods approved by the Engineer. Ensure
that the signal flashes when the monitor is disconnected.
G. Performance Test. At least 7 days before the performance test begins,
notify the Engineer of the
starting date. The Engineer will notify
the maintaining agency. Before
acceptance, operate the traffic control system continuously for 10 consecutive
days without major malfunction or failure.
Immediately replace or repair minor failures (such as lamps, a single
detector unit, or an individual signal head, etc.) that do not cause restart of
the test. Major malfunctions or failures
(such as a master or local controller, interconnect equipment, etc.) will cause
termination of the test and, after replacement or repair, the beginning of a
new 10-day test. Monitor items that have
been repaired or that are replacements for a 10-day period to provide assurance
of their reliability. Record, for
inclusion in the test result, the method and date of correction of each fault,
and the beginning and end of the test.
632.29 Method of
Measurement. The Department will measure Vehicular Signal Head and Pedestrian Signal Head by the number
of complete units, and will include all support or mounting hardware, disconnect
hangers, closure caps, dimmers, and lamps as required. Optically programmed heads shall include
programming. For programming purposes,
8-inch (200 mm) programmed heads shall include one extender tool per project.
The
Department will measure Pedestrian Pushbutton by the number of individual
units, and will include pedestrian pushbutton signs.
The
Department will measure Loop Detector unit and Magnetometer Detector unit
by the number of individual units, adjusted and tuned, and will include a
wiring harness. If multi-channel
detector units are used, the Department will consider each channel as an
individual detector unit up to the number of units specified.
The
Department will measure Magnetometer Sensors Probe by the number of individual
probes, and will include pavement cutting, probe
and lead installation, and application of sealant.
The
Department will measure Detector Loop by the number of complete detector loops installed in the pavement, and
will include pavement cutting, loop detector wire with tubing in place,
application of sealant, conduit, trenching, backfilling, and surface
restoration from the edge of pavement to the pull box.
The
Department will measure Strain Pole Foundation, Signal Support Foundation, and Pedestal Foundation by
the number of complete units, and will include excavation, dewatering, sleeving, casing, reinforcing steel, concrete, backfilling,
disposal of surplus excavation, and installation only of anchor bolts and
conduit ells.
The
Department will measure Signal Support, Combination Signal Support, Strain Pole, Combination Strain Pole, Strain Pole
Embedded, Combination Strain Pole Embedded, Wood Pole, and Pedestal by the number of complete
units of each, and will include pole arms, weather-heads and blind half
couplings, anchor bolts and conduit ells furnished for foundations, and
required individual anchor bolt covers or cover bases.
The
Department will measure Down Guy by the number of
individual units, and will include messenger wire, pole clamp or thru-bolt,
washer, clamps, guy grips, insulator, guy guard, and anchor.
The
Department will measure Conduit Riser by the number of complete units, and
will include weatherhead, conduit, fittings, clamps,
and hardware.
The
Department will measure Messenger Wire by the number of feet (meters) in place, and
will include all necessary accessories such as, grips, thimbles, clamps,
bullrings, and lashing rod. The
Department will measure from pole center to pole center, or pole center to
bullring, or bullring to bullring. The
Department will not measure any length of messenger wire for attachment to
poles, or bullrings by bending, lapping, or wrapping.
The
Department will measure Signal Cable, Interconnect Cable, Loop
Detector Lead-In Cable, Magnetometer Lead-In Cable, Power Cable, and Service
Cable by the number of feet (meters) in place.
Cable inside of poles shall include cable support assemblies. Aerial cable shall include pole attachment
hardware, splices, splice enclosures, and ground connection. Lead-in cable shall include poured epoxy
insulated splices. The Department will
measure: (1) horizontally from
center-to-center of pull boxes, poles, cabinets, power sources, and signal
heads with an additional allowance of 5 feet (1.5 m) at each pull box and
terminating points for slack and connections; and (2) vertically between pole
or conduit outlets. If single-conductor
power cable is substituted for multi-conductor cable, the Department will
measure required length of multi-conductor cable.
The
Department will measure Power Service by the number of complete units, and will
include weatherhead, conduit, fittings, clamps and
other necessary hardware, installation of meter base, ground wire connection,
and disconnect switch with
enclosure.
The
Department will measure Covering of Vehicular Signal Head and Covering of Pedestrian Signal Head by
the number of individual signal heads covered, and will include materials and
labor to erect, maintain, and remove the covering.
The
Department will measure Removal of Traffic Signal Installation by the number of installations
removed, and will include storage when required.
The
Department will measure Removal of (Item) and (Storage or Reerection) by the number of specific traffic signal
installation parts (such as a signal head, controller unit, or pole) removed,
and will include storage when required.
The
Department will measure Reuse of (Item) by the number of traffic signal
equipment items reused, and will include cleaning, restoring, and relamping.
632.30 Basis of
Payment. The costs to arrange service by the supply
agency are included under Power Cable.
The
costs of personnel, materials, equipment, electrical energy, and incidentals
required to conduct performance tests are included under the contract unit
price for the respective items tested.
The
Department will pay for accepted quantities at the contract prices as follows:
Item unit Description
632 Each Vehicular Signal Head, (LED),
___-Section
___ inch
(___
mm) Lens ___-Way
632 Each Vehicular Signal Head,
Optically
Programmed,
___-Section,
___ inch
(___
mm) Lens, ___-Way
632 Each Pedestrian Signal Head, (LED), Type ___
632 Each Pedestrian Pushbutton
632 Each Loop Detector unit
632 Each Detector Loop
632 Each Magnetometer Detector unit
632 Each Magnetometer Sensor Probe
632 Each Strain Pole
Foundation
632 Each Signal Support
Foundation
632 Each Pedestal Foundation
632 Each Signal Support,
Type TC-___, Design ___
632 Each Combination Signal
Support,
Type TC-___, Design ___
632 Each Strain Pole, Type
TC-___, Design ___
632 Each Combination Strain