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7 -2 GENERAL - The work embraced herein shall be done in accordance with the Standard
Specifications dated July, 2002, and the Standard Plans dated July, 2002, of the State of California
Department of Transportation insofar as the same may apply and in accordance with the following
special provisions.
In case of conflict between the Standard Specifications and these special provisions, the special
provisions shale take precedence over and be used in lieu of such conflicting portions.
7 -2.01 FOUNDATIONS. Foundations shall conform to the provisions in Section 86 -2.03, "Foundations" , of the Standard Specifications and these special provisions.
The Contractor shall furnish the nuts and washers to be used for new foundations and shall furnish the appropriate nuts and washers for existing foundations to be reused.
When foundations are to be abandoned as shown on the plans the last paragraph of Section 86 -2.03, "Foundations ", shall be amended to read:
When a foundation is to be abandoned, the top of foundation, anchor bolts, and conduits shall be removed to a depth of not less than three (3) feet below surface of sidewalk
or unimproved ground. The resulting hole shall be backfilled with material equivalent to the surrounding material.
All pull boxes and signal standard foundations where the signal standard is to be installed in an un- improved area shall be provided with a concrete pad having a minimum of 6"
clearance from the edge of the pull box and CIDH foundation.
7 -2.02 CONDUIT. Conduit shall conform to the provisions in Section 86 -2.05, "Conduit ", of the Standard Specifications and these special provisions.
Conduits maybe installed by either jacking /drilling or open trench methods unless otherwise shown on the plans. Installation using jacking or drilling shall conform to Section
86- 2.05C, "Installation ", of the Standard Specifications. Open trench installation in pavement shall conform to the following specifications:
a. Conduit shall be rigid non-metallic o metallic t e. Conduit du t shall be laced under existing pavement in a trench n
of to exceed six 6 inches in width. Trench shall 9 P c s a be cut using
rock saw and all I y
P 9P
9
nose uncom acted material shall all be removed from the bottom of the trench prior I
o to placement of conduit. The to of the installed conduit P t ed co du t shall be a
P P P
minimum of eighteen n to twenty-one ( 18 -
21 ) inches below finished rode.
b. The condui t shall be placed in the bottom of the trench and the trench shall be backfilled with a two (2) sack slurry cement backfill. Slurry cement backfill shall be placed to
within 0.20 feet
et o the pavement or open ground surface. The top 0.20 feet shall be backfilled with asphalt concrete produced from commercial quality paving asphalt and
agggreggates. Conduit placed in a trench outside pavement or sidewalk areas shall be backfilled with a two (2) sack slurry cement backfill.
c. Prior to s readin asphalt n r -
p g concrete, ete, paint binder shall be appplied as specified in Section 39 04.02, "Prime Coat and Paint Binder ", of the Standard Specifications.
Spreading and compacting of asphalt concrete shall be pertormed by any method which will produce an asphalt concrete surface of uniform smoothness, texture, and
density.
d. All excavated areas in the pavement shall be backfilled except for the top 0.20 foot, by the end of each work day. The top 0.20 foot shall be placed within three (3) working
days after trenching. Temporary r
a oadmix or other y
acceptable temporary surface will be allowed on the to 0.20 feet until i
t such a time as the permanent
Y 9 P rY P P rY P asphalt surface is
placed.
Dependent upon adverse soil conditions or other circumstances encountered at the time of construction, the Engineer may specify which of the above methods may be used.
A pull rope shall be installed in all signal conduits new orexisting. The pull rope shall be nylon or polypropylene with a minimum tensile strength of 500 pounds. At least 2 feet
of pull rope shall be doubled back into the conduit at each termination.
7 -2.03 PULL BOXES. Pull boxes shall conform to the provisions in Section 86 -2.06, "Pull Boxes ", of the Standard Specifications and these special provisions.
Recesses for suspension of ballasts will not be required.
All pull boxes shall be No. 5 with a 6" minimum concrete apron if pull boxes are not located within sidewalk.
7 -2.04 CONDUCTORS AND WIRING. Conductors and wiring shall conform to the provisions in Section 86 -2.08 "Conductors ", and Section 86 -2.09, "Wiring ", of the Standard
Specifications and these special provisions.
Conductors - The Contractor shall use multi- conductor electrical cables for all circuits except lighting, video power and between the service point and controller cabinet.
Conductors shall be spliced by the use of "C" shaped compression connectors as shown on Standard Plan ES -13.
Splices shall be insulated by "Method B ".
The optical detector cable (3 -M Opticom Model 138 or equal) shall have four conductors of AWG #20 (7X28) standard individually tinned drain wire to provide signal integrity
and transient protection. The individually tinned copper, color -coded insulation shall be as follows:
a. Orangge for delivery of optical detector power (+)
b. Ne ative return wire for optical detector power t-)
c. Yellow for optical detector signal #1
d. Blue for optical detector signal #2
The Contractor shall arrange for a qualified Opticom technician to be present at each signal turn on. A representative servicing the Bakersfield area may be contacted at (714)
321 -7513.
The insulation for all conductors shall be type THW polyvinyl chloride.
7- 2.07A.1 General
1.1 Each module shall consist of an assembly that utilizes LEDs as the light source in lieu of an incandescent LED for use in traffic signal sections.
1.2 The LEDs utilized in the modules shall be AIInGaP technology for red, amber and yellow indications, or GaN for green indications, and shall be the ultra bright type rated for
100,000 hours of continuous operation from -40 °C to +74° F.
1.3 The modules shall be rated for a minimum useful life of 48 months. All modules shall meet all parameters of this specification during this period.
1.4 The individual LEDs shall be wired such that a catastrophic loss or the failure of one or more LED will not result in the loss of the entire module.
1.5 Electrical
1.5.1 Power Consumption
1.5.1.1 Maximum power consumption requirements for the modules are as follows (in Watts):
1.5.1.2 LED modules will have EPA Energy Star compliance ratings, if applicable to that shape, size and color.
1.5.2 Operation Voltage
1.5.2.1 Them modules es shall operate from a 60 HZ k3 HZ AC line over a voltage ranging from 95 volts to 135 volts. The fluctuations of line voltage shall have no
visible effect on the luminous intensity of the indications.
1.5.2.2 Operating voltage of the modules shall be 120 VAC. All parameters shall be measured at this voltage.
1.5.3 Power Factor
The LED signal module shall have a power factor of 0.90 or greater.
1.5.4 THD
Total harmonic distortion (current and voltage) induced into an AC power line by an LED signal module shall not exceed 20 percent.
1.5.5 Surge Suppression
The signal module onboard circuitry shall include voltage surge protection to withstand high repetition noise transients as stated in Section 2.1.6 of NEMA Standard
TS-2, 1992.
1.5.6 The LED circuitry shall prevent perceptible flicker to the unaided eye over the voltage range specified above.
1.5.7 All wiring and terminal blocks shall meet the requirements of Section 13.02 of the ITE Publication: Equipment and Material Standards, Chapter 2 (Vehicle Traffic Control
Signal Heads).
1.5.8 Compatibility
The modules shall be operationally compatible with currently used controller assemblies (solid state load switches, flashers, and conflict monitors). Review TEES
Chapters 3 and 6 for specifications on these devices.
1.5.8.1 When a current of 20 mA AC (or less) is applied to the unit, the voltage read across the two leads shall be 15 VAC or less.
1.5.9 The modules and associated onboard circuitry must meet Class A emission limits referred in Federal Communications Commission (FCC) Title 47, Subpart B, Section
15 regulations concerning the emission of electronic noise.
1.6Photometric Requirements
1.6.1 The minimum initial luminous intensity values for the modules shall be as stated in Table 2 -2 and /or Table 2-4 at 25 °C.
1.6.1.1 The modules (excluding yellow) shall meet or exceed the illumination values as shown in Table 2 -3 and /or Table 2 -5, throughout the useful life based on
normal use in a traffic signal operation over the operating temperature range.
1.6.1.2 Yellow modules shall meet or exceed the illumination values as shown in Table 2 -3 and /or Table 2 -5, throughout the useful life based on normal use in a
traffic signal operation at 25 °C.
1.6.2 The measured chromaticity coordinates of the modules shall conform to the chromaticity requirements of Table 2 -6, throughout the useful life over the operating
temperature range.
1.7Physical and Mechanical Requirements
LED traffic signal modules shall be designed as retrofit replacements for existing optical units of signal indications and shall not require special tools for installation. See
appropriate sections for Type 1 and Type 2 modules.
1.8 Environmental Requirements
1.8.1 The LED signal module shall be rated for use in the operating temperature range of - 40 °C( -40 °F) to +74 °C ( +165 °F). The modules shall meet all specifications throughout
this range.
1.8.2 The LED signal module shall be protected against dust and moisture intrusion per the requirements of NEMA Standard 250 -199 1 for Type 4 enclosures to protect all
internal components.
1.9 Construction
1.9.1 The LED signal module shall be a single, self contained device, not requiring onsite assembly for installation into an existing traffic signal housing. The power supply
for the module shall be integral to the unit.
1.92 The circuit board and power supply shall be contained inside the module. Circuit boards shall conform to Chapter 1, Section 6 of the "Transportation Electrical
Equipment Specifications ".
1.9.3 The assembly and manufacturing process for the LED signal assembly shall be signed to assure all internal components are adequately supported to withstand
mechanical shock and vibration from high winds and other sources.
1.10 Materials
1.10.1 Material used for the lens and signal module construction shall conform to ASTM specifications for the materials.
1.10.2 Enclosures containing either the power supply or electronic components of the signal module shall be made of UL94VO flame retardant materials. The lens of the
signal module is excluded from this requirement.
1.11 Module Identification
1.11.1 Each module shall have the manufacturer's name, trademark, model number, serial number, date of manufacture (month - year), and lot number as identification
permanently marked on the back of the module.
1.11.2 The following operating characteristics shall be permanently marked on the back of the module: rated voltage and rated power in Watts and Volt-Ampere.
1.11.3 Each P
c module shall have a symbol of the g p
y e t�rpe of module (i.e. circle, arrow, etc.) in the color of the module. The symbol shall be one inch (25.4 mm) in diameter.
Additionally, the color shall be written out in % letters next to the symbol.
1.11.4 If a specific mounting orientation is required, each module shall have prominent and permanent marking(s) for correct indexing and orientation within a signal housing.
The markings shall consist of an up arrow, or the word "UP" or "TOP ".
7- 2.07A.2 Type 1 Traffic Signal Module
The following specification requirements apply to the Type 1 module only. All general specifications apply unless specifically superceded in this section.
2.1 Type 1 modules can be manufactured under this specification for the following faces:
2.1.1 300 mm circular
2.1.2 200 mm circular
2.1.3 300 mm arrow
2.1.4 Bicycle indication (future)
2.1.5 Lane Control (future)
2.2 Physical and Mechanical Requirements
2.2.1 The module shall fit into existing traffic signal section housings built to the specifications detailed in ITE Publication: Equipment and Material Standards, Chapter 2
Vehicle Traffic Control Signal Heads).
2.2. Each Type 1 module shall be designed to be installed in the doorframe of a standard traffic signal housing. The Type 1 module shall be sealed in the doorframe with a
one -piece EPDM (ethylene propylene rubber) gasket.
2.2.3 The maximum weight of a Type 1 module shall be a 1.8 kg (4 Ibs.).
2.2.4 Each Type 1 module shall be a sealed unit to include all parts necessary for operation (a printed circuit board, power supply, a lens and gasket, etc.), and shall be
weather proof after installation and connection.
2.2.5 Conductors
Two secured, color coded, 600 V, 20 AWG minimum. wires, conforming to the National Electric Code, rated for service at +105° C, are to be provided for electrical
connection for each Type 1 LED signal module. Conductors for Type 1 modules shall be 1 M in length, with quick disconnect terminals attached and shall conform to Section
86 -4. OIC, "Electrical Components', of the Standard Specifications.
2.2.6 If specified in the purchase order, the module will be equipped with an adapter that will screw into the medium base, LED socket. The adapter shall be able to accept
the quick disconnect terminals at the end of the conductors for the module. The electrical contacts of the adapter shall be made of brass.
2.3 Lens
2.3.1 The lens of the Type 1 module shall be integral to the unit, shall be convex with a smooth outer surface and made of plastic or of glass.
2.3.2 The lens may be tinted or may use transparent film or materials with similar characteristics to enhance ON /OFF contrasts.
3.3.2.1 The use of tinting or other materials to enhance ON /OFF contrasts shall not affect chromaticity and shall be uniform across the face of the lens.
2.3.3 The LED signal module lens shall be W stabilized and shall be capable of withstanding ultraviolet (direct sunlight) exposure for a minimum period of 60 months without
exhibiting evidence of deterioration.
2.3.4 If a polymeric lens is used, a surface coating or chemical surface treatment shall be used to provide front surface abrasion resistance.
7- 2.07A.3 Type 2 Traffic Signal Module
The following specification requirements apply to the Type 2 module only. All general specifications apply unless specifically superceded in this section.
3.1 Type 2 modules can be manufactured under this specification for the following faces:
3.1.1 300 mm circular
3.1.2 200 circular
3.1.3 300 mm arrow
3.1.4 Programmed Visibility ((red, yellow, green)
3.2 Physical and Mechanical Requirements
3.2.1 The module shall fit into existing traffic signal section housings built to the specifications detailed in the ITE Publication: Equipment and Material Standards, Chapter 2
Vehicle Traffic Control Signal Heads), with the existing lens, reflector and LED socket remaining in place, and without modification to the housing.
3.2.2 �ach Type 2 module shall be designed to mount in the standard LED socket normally used with an incandescent LED.
3.2.3 The maximum weight of a Type 2 module shall be 1.4 kg (31bs).
3.2.4 Type 2 modules shall be a sealed unit containing all components necessary for operation.
3.3 The installation of a Type 2 module shall not require any removal of, or modification to the standard LED socket or reflector. The installation of a Type 2
module shall not require special tools.
7- 2.07A.4 300 mm Arrow
The following specification requirements apply to the 300 mm arrow module only. All general specifications apply unless specifically superceded in this section.
4.1 The arrow module shall meet specifications stated in Section 9.01 of the ITE Publication: Equipment and Material Standards, Chapter 2 (Vehicle Traffic Control Signal
Heads) for arrow indications.
4.2 The LEDs shall be spread evenly across the illuminated portion of the arrow area.
7- 2.07A.5 300 mm Bicycle
The following specification requirements apply to the 300 mm bicycle module only. All general specifications apply unless specifically superceded in this section.
5.1 The bicycle module shall approximate shape and sizes specifications as shown in Figure 6 -1 for bicycle signal face. Caltrans shall make the final determination as
P 9 Y 9
to the conformance to the intent of the specification.
5.2 The LEDs shall be spread evenly across the illuminated portion of the bicycle area.
7- 2.07A.6 300 mm Programmed Visibility (PV)
The following specification requirements apply to the 300 mm PV module only. All general specifications apply unless specifically superceded in this section.
6.1 The module shall be a type 2 module designed and constructed to be installed in a programmed visibility (PV) signal housing without modification to the housing.
6.2 The LEDs shall be spread evenly across the module.
7- 2.07A.7 300 mm Lane Control
The following specification requirements apply to the 300 mm lane control module only.
The lane control module is a single, le combination on module with both a r e
d X and green arrow.
All general specifications aTply unless specifically superceded ercede in this section.
7.1 The lane control moule
shall approximate shape and size specifications as shown in Figures 8-1 and 8 -2 for lane control modules. Caltrans shall make the final I
determination as to the conformance to the intent of the specification.
7.2 Three secured, color coded, 600 V, 20 AWG minimum, jacketed wires, conforming to the National Electric Code, rated for service at +105 °C, are to be provided for electrical
connection for each lane control LED signal module. Conductors for this module shall be 1 M in length, with quick disconnect terminals attached and shall conform to Section
86 -4. OIC, "Electrical Components ", of the Standard Specifications. The color code is as follows:
FunctionColorneutralwhitered Xred reen arrowbrown
7.3 The LEDs shall be spread evenly across the illuminated portions of this module.
7- 2.07A.8 ualit Assurance
Q y
8.1 The modules shall be manufactured in accordance with a manufacturer quality assurance (QA) program. The QA program shall include two ttyypes of quality assurance: (1)
design quality assurance and (2) production quality assurance. The production quality assurance shall include statistically controlled routine tests to ensure minimum
performance levels of LED signal modules to meet this specification, and a documented process of how problems are to be resolved.
8.2 QA process and test results documentation shall be kept on file for a minimum period of seven years.
8.3 LED signal module designs not satisfying design qualification testing and the production quality assurance testing performance requirements described below shall not be
labeled, advertised, or sold as conforming to this specification.
8.4 Design Qualification Testing
8.4.1 Design Qualification Testing shall be performed by the manufacturer or an independent testing lab hired by the manufacturer on new LED module designs, and when a
major design change has been implemented on an existing design. A major design change is defined as a design change (electrical or physical) which changes any of the
performance characteristics of the module, results in a different circuit configuration for the power supply, or changes the layout of the individual LEDs in the module.
8.4.2 A quantity of two units for each design shall be submitted for Design Qualification Testing.
8.4.2.1 Test Units shall be submitted to Caltrans Translab, Electrical Testing Branch after the manufacturer's testing is complete.
8.4.2.2 Manufacturer's testing data shall be submitted with test units for Caltrans verification of Design Qualification Testing data.
8.4.3 Burn In.
The sample modules shall be energized for a minimum of 24 hours, at 100 percent on -time duty cycle, at a temperature of +74 °C ( +165° F), before performing any
design qualification testing.
8.4.4 Any failure of the module, which renders the unit non - compliant with the specification after burn in, shall be cause for rejection.
8.4.5 For Design Qualification Testing all specifications will be measured including, but not limited to:
8.4.5.1 Rated Initial Luminous Intensity, measured at +25'C.
8.4.5.2 Chromaticity (Color), measured at +25' C.
8.4.5.3 Electrical
All specified parameters shall be measured and used for quality comparison of production quality assurance on production modules (rated power, etc).
8.4.5.4 Equipment Compatibility.
Modules shall be tested for compatibility with the controller unit, conflict monitor, and load switch. Each signal module shall be connected to the output of a standard load
switch in the "off' position. The AC voltage developed across each LED signal module so connected shall not exceed 10 V rms as the input AC voltage is varied from 95
V rms to 135 V rms.
8.4.5.5 Mechanical vibration testing shall be as per MIL - STD -883, Test Method 2007, using 3 four minute cycles along each x, y and z axis, at a force of 2.5 Gs, with a
frequency weep from 2 HZ to 120 HZ. The loosening of the lens, or of any internal components, or other physical damage shall be cause for rejection.
8.4.5.6 Temperature cycling shall be performed as per MIL - STD -883, Test method 1010. The temperature range shall be per "Environmental Requirements ". A
minimum of 20 cycles shall be performed with a 30 minute transfer time between temperature extremes and a 30 minute dwell time at each temperature. Module(s)
being tested shall be energized and functioning throughout the duration of the test. Failure of a module to function properly or any evidence of cracking of the module
lens or housing after temperature cycling shall -be cause for rejection.
7- 2.07A.9 Production Quality Control Testing.
9.1.1 The following Production Quality Assurance tests shall be performed on each new module prior to shipment. Failure to meet requirements of any of these tests shall be
cause for rejection. Test results shall be retained by the manufacturer for seven years.
9.1.2 Burn -in period shall consist of each signal module being energized at rated voltage for a 30 minute stabilization period before the measurement is made (except for
yellow modules).
9.1.3 Each module shall be tested for rated initial intensity after burn -in.
9.1.3.1 A single point measurement, with a correlation to the intensity requirements of Table 2 -2 for circular modules, may be used.
9.1.3.2 The ambient temperature for this measurement shall be +25 °C ( +77 °F).
9.1.3.3 Each module not meeting minimum luminous intensity requirements per Table 2 -2 or Table 2-4 shall be cause for rejection.
9.1.4 Each module shall be tested for required power factor after burn -in.
9.1.5 Each module shall be measured for current flow in amperes after burn -in. The measured current values shall be compared against rated values resulting from design
qualification measurements under "Design Qualification Testing". The current flow shall not exceed the rated value.
9.1.6 Each module shall be visual) inspected for any exterior physical damage or assembly anomalies. Careful attention shall be paid to the surface of the lens to ensure
there are no scratches (abrasions, cracks, chips, discoloration, or other defects. Any such defect shall be cause for rejection.
7- 2.07A.10 CERTIFICATE OF COMPLIANCE. The Contractor shall provide the Engineer a Certificate of Compliance from the manufacturer in accordance with the provisions of
Section 6 -1.07, "Certificates of Compliance," of the Standard Specifications. The certificate shall certify that the LED signal modules comply with the requirements of these
specifications. Said certificate shall also certify the LED signal modules conform to the pre - qualified and testing approval of CalTrans and was manufactured in accordance with the
CalTrans quality control program. The certificate shall also include a copy of all applicable test reports on the LED signal modules.
7- 2.07A.11 MAINTENANCE PERIOD AND REPLACEMENT MODULES. Three extra modules of each size and type that are furnished for this project shall be delivered to the
Engineer for use as replacements for modules that may fail.
7- 2.07A.12 GUARANTEE. LED signal modules shall be guaranteed by the Contractor by supplying the City with the original manufacturer's warranty after the project is accepted by
the Engineer. The warranty duration shall be as outlined under the following warranty section.
7- 2.07A.13 WARRANTY. The manufacturer shall provide a written warranty against defects in materials and workmanship for the LED signal modules for a period of 36 months
after installation of the modules. Replacement modules shall be provided promptly after receipt of modules that have failed at no cost to the City except cost of shipping of the failed
modules. All warranty documentation shall be given to the Engineer prior to installation.
7- 2.08A.1 LIGHT EMITTING DIODE COUNTDOWN PEDESTRIAN SIGNALS
Countdown pedestrian signals shall consist of Portland orange numbers that are at least 6 inches in height on a black opaque background. The countdown pedestrian signal shall be
located immediately adjacent to the associated UPRAISED HAND (symbolizing DONT WALK) pedestrian signal head indication.
The display of the number of remaining seconds shall begin only at the beginning of the pedestrian change interval (flashing UPRAISED HAND). After the countdown displays zero,
the display shall remain dark until the beginning of the next countdown.
The countdown pedestrian signal shall display the number of seconds remaining until the termination of the pedestrian change interval (flashing UPRAISED HAND). Countdown
displays shall not be used during the walk interval or during the red clearance interval of a concurrent vehicular phase.
For crosswalks where the pedestrian enters the crosswalk more than 100 feet from the countdown pedestrian signal display, the numbers should be at least 9 inches in height.
Because some technology includes the countdown pedestrian signal logic in a separate timing device that is independent of the timing in the traffic signal controller, care should be
exercised by the engineer when timing changes are made to pedestrian change intervals.
If the pedestrian change interval is interrupted or shortened as a part of a transition into a preemption sequence (see Section 4E.06), the countdown pedestrian signal display should
be discontinued and go dark immediately upon activation of the preemption transition.
1.5.3 Power Factor
The LED signal module shall have a power factor of 0.90 or greater.
1.5.4 THD
Total harmonic distortion (current and voltage) induced into an. AC power line by an LED signal module shall not exceed 20 percent.
1.5.5 Surge Suppression
The signal module onboard circuitry shall include voltage surge protection to withstand high repetition noise transients as stated in Section 2.1.6 of NEMA Standard TS -2, 1992.
1.5.6 The LED circuitry shall prevent perceptible flicker to the unaided eye over the voltage range specified above.
1.5.7 All wiring and terminal blocks shall meet the requirements of Section 13.02 of the ITE Publication: Equipment and Material Standards, Chapter 2 (Vehicle Traffic Control Signal
Heads
1.5.8 Compatibility
The modules shall be operationally compatible with currently used controller assemblies (solid state load switches, flashers, and conflict monitors). Review TEES Chapters 3
and 6 for specifications on these devices.
1.5.8.1 When a current of 20 mA AC (or less) is applied to the unit, the voltage read across the two leads shall be 15 VAC or less.
1.5.9 The modules and associated onboard circuitry must meet Class A emission limits referred to in Federal Communications Commission (FCC) Title 47, Subpart B, Section 15
regulations concerning the emission of electronic noise.
1.6 Environmental Requirements
1.6.1 The LED signal module shall be rated for use in the operating temperature range of -40 °C ( -40° F) to +74 °C ( +1 65 °F). The modules shall meet all specifications throughout
this range.
1.6.2 The LED signal module shall be protected against dust and moisture intrusion per the requirements of NEMA Standard 250 -1991 for Type 4 enclosures to protect all internal
components.
1.7 Construction
1.7.1 The LED signal module shall be a single self contained device, not requiring onsite assembly for Installation into an existing traffic signal housing. The power supply for the
module shall be integral to the unit.
1.7.2 The circuit board and power supply shall be contained inside the module. Circuit boards shall conform to Chapter 1, Section 6 of the "Transportation Electrical Equipment
Specifications ".
1.7.3 The assembly and manufacturing process for the LED signal assembly shall be designed to assure all internal components are adequately supported to withstand mechanical
shock and vibration
from high winds and other sources.
1.8 Materials
1.8.1 Material used for the lens and signal module construction shall conform to ASTM specifications for the materials.
1.8.2 Enclosures containing either the power supply or electronic components of the signal module shall be made of UL94VO flame retardant materials. The lens of the signal module
is excluded from this requirement.
1.9 Module Identification
1.9.1 Each module shall have the manufacturer's name, trademark, model number, serial number, date of manufacture (month - year), and lot number as identification permanently
marked on the back of the module.
1.9.2 The following operating characteristics shall be permanently marked on the back of the module: rated voltage and rated power in Watts and Volt- Ampere.
1.9.3 If a specific mounting orientation is required, each module shall have prominent and permanent marking(s) for correct indexing and orientation within a signal housing. The
markings shall consist of an up arrow, or the word 'UP_ or "TOP ".
7- 2.08A.2 Type A Pedestrian Signal Face (Countdown Pedestrian Signal per MUTCD 4E.07)
The following specification requirements apply to the walking person section only. All general specifications apply unless specifically superseded in this section.
2.1 General
2.1.1 Pedestrian signal face modules shall be designed to mount behind or replace the existing face plate of existing Type_ "A" housing as specified by the requirements in the ITE
Publication: Equipment and Material Standards, Chapter 3 (Pedestrian Traffic Control Signal Indications).
2.1.2 The design of the modules shall require a specific mounting orientation.
2.2 Photometric Requirements
2.2.1 Each module shall provide an average luminous intensity of at least 3,750 candela /m* for "Hand" and 5,300 candela /m* or "Walking Person" symbol throughout the useful life
over the operating temperature range.
2.2.2 The uniformity ratio of an illuminated symbol shall not exceed 4 to 1, between the highest luminance area and the lowest luminance area in the module.
2.2.3 The color output of the module shall conform to the requirements of Section 5.3 in the ITE Publication: Equipment and Material Standards , Chapter 3 (Pedestrian Traffic
Control Signal indications).
2.2.3.1 "Hand" shall be Portland orange. Not greater than 0.390, nor less than 0.331, nor less than 0.997 -x.
2.2.3.2 Walking person shall be lunar white.
x: not less than 0.290, nor greater than 0.330
y: not less than 1.5x -- 0.175, nor greater than 1.5x -0.130
2.3 Physical and Mechanical Requirements
2.3.1 The module shall be designed to be used in the pedestrian signal section as retrofit replacement for existing signal LEDs and shall not require special tools for installation.
2.3.1.1 The module shall fit into existing pedestrian signal section housings built to PT CS H specifications without modification to the housing. .
2.3.2 The height of each symbol n h m I shall symbol on the module s all not be less than 165 mm.
g o the module s a be not less than 250 mm and the width of each y
2.4 Construction
The modules shall be a single, self- contained device, not requiring on -site assembly for installation into an existing Type "A" housing.
7- 2.08A.3 Quality Assurance
1 I program.
3. The modules shat be manufactured in accordance with a manufacturer quality assurance (QA) pr g
The QA program shall include two types of quality assurance: (1) design quality assurance and (2)
production quality assurance. The production quality assurance shall include statistically controlled routine tests to ensure minimum performance levels of LED signal modules built
to meet this specification, and a documented process of how problems are to be resolved.
3.2 QA process and test results documentation shall be kept on file for a minimum period of seven years.
3.3 LED signal module designs not satisfying design qualification testing and the production quality assurance testing performance requirements described below shall not be
labeled, advertised, or sold as conforming to this specification.
3.4 Design Qualification Testing
3.4.1 Design Qualification Testing shall be performed by the manufacturer or an independent testing lab hired by the manufacturer on new LED module designs, and when a major
design change has been implemented on an existing design. A major design change is defined as a design change (electrical or physical) which changes any of he
performance characteristics of the module results in a different circuit configuration for the power supply, or changes the layout of the individual LEDs in the module.
3.4.2 A quantity of two units for each design shall be submitted for Design Qualification Testing.
3.4.2.1 Test Units shall be submitted to Caltrans Laboratory, Electrical Testing Branch, after the manufacturer's testing is complete.
3.4.2.2 Manufacturer's testing data shall be submitted with test units for Caltrans verification of Design Qualification Testing data.
3.4.3 Burn In
The sample modules shall be energized for a minimum of 24 hours, at 100 percent on- -time duty cycle, at a temperature of +74° C( +165° F), before performing any design
qualification testing.
3.4.4 Any failure of the module, which renders the unit non - compliant with the specification after burn in, shall be cause for rejection.
3.4.5 For Design Qualification Testing, all specifications will be measured including, but not limited to:
3.4.5.1 Rated Initial Luminous Intensity, measured over the operating temperature range.
3.4.5.2 Chromaticity (Color), measured over the operating temperature range.
3.4.5.3 Electrical.
All specified parameters shall be measured and used for quality comparison of production quality assurance on production modules (rated power, etc.).
3.4.5.4 Equipment Compatibility.
Modules shall be tested for compatibility with the controller unit, conflict monitor, and load switch. Each signal module shall be connected to the output of a standard load switch,
connected to an AC voltage supply between the values of 95 and 135 VAC, with the input to the load switch in the "off' position. The AC voltage developed across each LED
signal module so connected shall not exceed 10 V rms as the input AC voltage is varied from 95 V rms to 135 V rms.
3.4.5.5 Mechanical vibration testing shall be as per MIL - STD -883 Test Method 2007, using 3 four minute cycles along each x, y, and z axis at a force of 2.5 Gs, with a frequency
sweep from 2HZ to 120 HZ. The loosening of the lens, or of any internal components, or other physical damage shall be cause for rejection.
3.4.5.6 Temperature cycling shall be performed as per MIL - STD -883, test method 1010. The Temperature rangge shall be per'Environmental Requirements ". A minimum of 20 cycles
shall be performed with a 30 minute transfer time between temperature extremes and a 30 minute dwell time at each temperature. Modules being tested shall be energized
and functioning throughout the duration of the test. Failure of a module to function properly or any evidence of cracking of the module lens or housing after temperature cycling
shall be cause for rejection.
3.4.5.7 Moisture resistance shall be performed on all modules mounted in a standard type "A" pedestrian housing per NEMA Standard 250 -1991 for Type 4 enclosures. Any
evidence of internal moisture after testing shall be cause for rejection.
7- 2.08A.4 Production Quality Control Testing.
4.5.1 The following Production Quality Assurance tests shall be performed on each new module prior to shipment. Failure to meet requirements of any of these tests shall be
cause for rejection. These results shall be retained by the manufacturer for seven years.
4.5.2 Burn in period shall consist of each signal module being energized at rated voltage or a 30 minute stabilization period before the measurement is made.
4.5.3 Each module shall be tested for rated initial intensity after burn -in.
4.5.3.1 A single point measurement, with a correlation to the intensity requirements of Section 1.04 of the VTCSH for circular modules, may be used.
4.5.3.2 The ambient temperature for this measurement shall be a +25° C ( +77° F).
4.5.3.3 Each module not meeting minimum luminous intensity requirements of 3,750 cd /m* for Hand and 5300 cd /m2 for Walking Person Symbol shall be cause for rejection.
4.5.4 Each module shall be tested for required power factor after burn -in.
4.5.5 Each module shall be measured for current flaw in amperes after burn -in. The measured current values shall be compared against rated values resulting from design
qualification measurement under "Design Qualification Testing ". The current flow shall not exceed the rated value.
4.5.6 Each module shall be visually inspected for any exterior physical damage or assembly anomalies. Careful attention shall be paid to the surface of the lens to ensure there are
no scratches (abrasions), cracks, chips, discoloration, or other defects. Any such defect shall be cause for rejection.
7- 2.08A.5 Maintenance Period and Replacement Modules
Three extra modules of each size and type that are furnished for this project shall be delivered to the Engineer for use as replacements for modules that may fail.
7- 2.08.6 Guarantee
Pedestrian Signal Face ( Countdown Pedestrian Signal per MUTCD 4E.07) section modules shall be guaranteed by the Contractor by supplying the City with the original
manufacturer's warranty after the project is accepted by the Engineer. The warranty duration shall be as outlined under the following warranty section.
7- 2.08A.7 Warranty.
The manufacturer shall pprovide a written warranty against defects in materials and workmanship for the Pedestrian Signal Face (Countdown Pedestrian Signal per MUTCD 4E.07)
modules for a period of 60 months after installation of the modules. All warranty documentation shall -be given to the Engineer prior to installation.
Three extra modules of each size and type are furnished f or this project shall be delivered to the Engineer for use as replacements for modules that may f a il.
7- 2.08A.09 Guarantee
Pedestrian Signal Face (Combination Raised Hand/Walking Person) section modules shall be guaranteed by the Contractor by supplying the City with the original manufacturer's
warranty after the project is accepted by the Engineer. The warranty duration shall be as outlined under the following warranty section.
7- 2.08A.10 Warranty
The manufacturer shall provide a written warranty against defects in materials and workmanship for the Pedestrian Signal Face (Combination Raised Hand/Walking Person)
modules for a period of 60 months after installation of the modules. All warranty documentation shall be given to the Engineer prior to installation.
7 -2.09 LUMINAIRES. Luminaires shall be LED 30OW Equivalent.
7 -2.10 PHOTOELECTRIC CONTROLS. Photoelectric controls shall conform to the provisions in Section 86 -6.07, "Photoelectric Controls ", of the Standard Specifications and these
special provisions.
Each Luminaire shall be provided with a Type IV photoelectric control.
7 -2.12 GUARANTEE. The Contractor shall furnish a written guarantee to the City on the form attached, uaranteeing all systems installed under this contract for a period of one (1)
year from the date of acceptance of the work. The guarantee, properly executed, shall be filed with the City before final acceptance is made by the City of the work described on the
plans and these special provisions.
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