placed in -line with lanes of traffic. A single detector shall be able to replace one or more conventional detector loops. De tection zones shall be able to be fully overlapped. In addition, detection zones shall have the capability of implementing "AND" and "OR" logical functions including presence, extension and delay timing. These logical functions may be excluded if provision s are made to bring each detector separately into the controller and the controller can provide these functions. The system shall produce accurate detector outputs under all roadway lighting conditions, regardless of time of day. The system shall be capabl e of providing 64 or more detector outputs from up to 8 camera/video processor units. The VDS processor system should provide compressed color video through the DB -9 RS -232 data stream with active detection zones overlaid. The system shall have a modular electrical design. It shall be powered by 89-135 VAC, 60 Hz single -phase. Power to the system shall be from the transient protected side of the AC power distribution system in the traffic control cabinet in which the system is installed. If the VDS process or is located in the controller cabinet, then, the system shall be powered by 12 -24 VDC and draw less than 2 amperes. The system software shall be able to detect either approaching or departing vehicles in multiple traffic lanes. Each zone and output shall be user-definable through interactive graphics by placing lines and/or boxes in an image on a video monitor or personal computer. The user shall be able to redefine previously defined detection zones. Detection zones shall be provided that are sensitive t o the direction of vehicle travel. The direction to be detected by each detection zone shall be user programmable. The Windows software shall be able to display the traffic parameters on the video monitor per vehicle for each detection zone by lane. It sha ll be possible to view and sort the stored data for selected time intervals. When the monitoring equipment is directly connected to the VDS processor unit, it shall be possible to view vehicle detections in real -time. The field communications wiring betwe en each camera and the traffic controller cabinet shall meet VDS factory requirements.
1020.02.2 2 VDS Processor: The processor is an electronic unit
that converts the video image provided by the cameras, generates vehicle detection for defined zones and collects v ehicular data as specified. The VDS processor may be housed in either the cabinet or camera housing. The processor shall fit directly into NEMA TS1 and TS2 type detector racks or equipment manufacture supplied racks. The video output from the unit shall b e in color with active detection zones overlaid on full motion video. The processor unit shall be capable of providing the following detection zones: count, presence, directional presence, speed, stopped vehicles, and queue types of detection zones. The pr ocessor unit shall meet the following requirements:
1.Each video processor module card shall be capable of a minimum of 64 detector outputs and each processor input shall be capable of a minimum of 20 detection zones.
2.The processor unit shall meet the enviro nmental requirements set forth by the latest NEMA (National Electrical Manufacturers Association) TS1 and TS2 standards. Operating temperature shall be from -25°F to +160°F at zero to 95 percent relative humidity, non -condensing.
3.Detection input shall be v ia a SDLC interface connection to the signal controller front panel.
4.The processor unit software and/or the supervisor software shall include diagnostic to allow testing of the system functions. It shall include the capability to set, clear individual dete ctor outputs, and display the status of inputs to setup and troubleshoot in the field.
5.The processor shall provide real -time vehicle detection within 112 milliseconds (ms) of vehicle arrival. It shall be capable of simultaneously processing information fro m various video sources, including CCTV video image sensors and video tape players. The video sources may be, but are not required to be, synchronized or line -locked.
6.The processor shall compensate for minor camera movement up to 2 percent of the field of view at 400 ft. without falsely detecting vehicles. The camera movement shall be measured on the unprocessed video input to the processor unit. The camera shall operate while directly connected to the processor unit. Once the detector configuration has be en downloaded or saved, the video detection system shall operate with the monitoring equipment (monitor and/or laptop) disconnected or on -line.
1020.02.2 3 BIU (Bus Interface Unit): The VDS system shall
incorporate one BIU to accomplish controller interface connect ion. This BIU shall be capable of a minimum of 64 outputs with the BIU assignment detection for defined zones and collects v ehicular data as specified. The VDS processor may be housed in either the cabinet or camera housing. The processor shall fit directly into NEMA TS1 and TS2 type detector racks or equipment manufacture supplied racks. The video output from the unit shall b e in color with active detection zones overlaid on full motion video. The processor unit shall be capable of providing the following detection zones: count, presence, directional presence, speed, stopped vehicles, and queue types of detection zones. The pr ocessor unit shall meet the following requirements:
1.Each video processor module card shall be capable of a minimum of 64 detector outputs and each processor input shall be capable of a minimum of 20 detection zones.
2.The processor unit shall meet the enviro nmental requirements set forth by the latest NEMA (National Electrical Manufacturers Association) TS1 and TS2 standards. Operating temperature shall be from -25°F to +160°F at zero to 95 percent relative humidity, non -condensing.
3.Detection input shall be v ia a SDLC interface connection to the signal controller front panel.
4.The processor unit software and/or the supervisor software shall include diagnostic to allow testing of the system functions. It shall include the capability to set, clear individual dete ctor outputs, and display the status of inputs to setup and troubleshoot in the field.
5.The processor shall provide real -time vehicle detection within 112 milliseconds (ms) of vehicle arrival. It shall be capable of simultaneously processing information fro m various video sources, including CCTV video image sensors and video tape players. The video sources may be, but are not required to be, synchronized or line -locked.
6.The processor shall compensate for minor camera movement up to 2 percent of the field of view at 400 ft. without falsely detecting vehicles. The camera movement shall be measured on the unprocessed video input to the processor unit. The camera shall operate while directly connected to the processor unit. Once the detector configuration has be en downloaded or saved, the video detection system shall operate with the monitoring equipment (monitor and/or laptop) disconnected or on -line.
1020.02.2 3 BIU (Bus Interface Unit): The VDS system shall
incorporate one BIU to accomplish controller interface connect ion. This BIU shall be capable of a minimum of 64 outputs with the BIU assignment being hardware selectable.
1020.02.2 4 Video Detection Camera: The video detection
camera shall be compatible with the video detection processor and shall be certified by the manufact urer to ensure proper system operation. The camera shall produce a useable video image in 0.009 to 930 foot - candles luminance. Images shall be produced with a Charge Coupled Device (CCD) sensing element with horizontal resolution of at least 470 lines and vertical resolution of at least 400 lines. Images shall be output as a video signal conforming to RS 170A or CCIR. The camera shall include mechanisms to compensate for changing of lighting by using an electronic shutter and/or auto -iris lens. The camera shall include a motorized variable focal length lens with factory preset focus that requires no field adjustment. Zooming of the camera lens is required to suit the site geometry by means of a portable interface device designed for that purpose and manufac tured by the detection system supplier or via software and standard laptop. When operating in the environmental enclosure with power and video signal cables connected, the image sensor shall meet FCC class B requirements for electromagnetic interference em issions. The video output of the cameras shall be isolated from earth ground. All video connections for the cameras to the video interface panel shall also be isolated from earth ground. Connections for both video and power shall be made to the processor u sing waterproof, quick disconnect connectors.
1020.02.2 5 Camera Enclosure: The camera and lens assembly
shall be housed in an environmental enclosure that meets or exceeds NEMA -4X and provides the following capabilities:
1.Be metallic and waterproof and dust -tight to the latest NEMA -4X specifications.
2.Allow the camera to operate satisfactorily over an ambient temperature range from -25°F to +160°F while exposed to precipitation as well as direct sunlight.
3.Allow the camera horizon to be rotated in the field during in stallation.
4.Include a provision at the rear of the enclosure for connection of power and video signal cables. The input power to the environmental enclosure shall be nominally 120 or 240 VAC 50/60 Hz and the power consumption shall be 35 watts or less unde r all conditions. being hardware selectable.
1020.02.2 4 Video Detection Camera: The video detection
camera shall be compatible with the video detection processor and shall be certified by the manufact urer to ensure proper system operation. The camera shall produce a useable video image in 0.009 to 930 foot - candles luminance. Images shall be produced with a Charge Coupled Device (CCD) sensing element with horizontal resolution of at least 470 lines and vertical resolution of at least 400 lines. Images shall be output as a video signal conforming to RS 170A or CCIR. The camera shall include mechanisms to compensate for changing of lighting by using an electronic shutter and/or auto -iris lens. The camera shall include a motorized variable focal length lens with factory preset focus that requires no field adjustment. Zooming of the camera lens is required to suit the site geometry by means of a portable interface device designed for that purpose and manufac tured by the detection system supplier or via software and standard laptop. When operating in the environmental enclosure with power and video signal cables connected, the image sensor shall meet FCC class B requirements for electromagnetic interference em issions. The video output of the cameras shall be isolated from earth ground. All video connections for the cameras to the video interface panel shall also be isolated from earth ground. Connections for both video and power shall be made to the processor u sing waterproof, quick disconnect connectors.
1020.02.2 5 Camera Enclosure: The camera and lens assembly
shall be housed in an environmental enclosure that meets or exceeds NEMA -4X and provides the following capabilities:
1.Be metallic and waterproof and dust -tight to the latest NEMA -4X specifications.
2.Allow the camera to operate satisfactorily over an ambient temperature range from -25°F to +160°F while exposed to precipitation as well as direct sunlight.
3.Allow the camera horizon to be rotated in the field during in stallation.
4.Include a provision at the rear of the enclosure for connection of power and video signal cables. The input power to the environmental enclosure shall be nominally 120 or 240 VAC 50/60 Hz and the power consumption shall be 35 watts or less unde r all conditions. being hardware selectable.
1020.02.2 4 Video Detection Camera: The video detection
camera shall be compatible with the video detection processor and shall be certified by the manufact urer to ensure proper system operation. The camera shall produce a useable video image in 0.009 to 930 foot - candles luminance. Images shall be produced with a Charge Coupled Device (CCD) sensing element with horizontal resolution of at least 470 lines and vertical resolution of at least 400 lines. Images shall be output as a video signal conforming to RS 170A or CCIR. The camera shall include mechanisms to compensate for changing of lighting by using an electronic shutter and/or auto -iris lens. The camera shall include a motorized variable focal length lens with factory preset focus that requires no field adjustment. Zooming of the camera lens is required to suit the site geometry by means of a portable interface device designed for that purpose and manufac tured by the detection system supplier or via software and standard laptop. When operating in the environmental enclosure with power and video signal cables connected, the image sensor shall meet FCC class B requirements for electromagnetic interference em issions. The video output of the cameras shall be isolated from earth ground. All video connections for the cameras to the video interface panel shall also be isolated from earth ground. Connections for both video and power shall be made to the processor u sing waterproof, quick disconnect connectors.
1020.02.2 5 Camera Enclosure: The camera and lens assembly
shall be housed in an environmental enclosure that meets or exceeds NEMA -4X and provides the following capabilities:
1.Be metallic and waterproof and dust -tight to the latest NEMA -4X specifications.
2.Allow the camera to operate satisfactorily over an ambient temperature range from -25°F to +160°F while exposed to precipitation as well as direct sunlight.
3.Allow the camera horizon to be rotated in the field during in stallation.
4.Include a provision at the rear of the enclosure for connection of power and video signal cables. The input power to the environmental enclosure shall be nominally 120 or 240 VAC 50/60 Hz and the power consumption shall be 35 watts or less unde r all conditions.
5.A thermostatically controlled heater shall be at the front of the enclosure to prevent the formation of ice and condensation, as well as to assure proper operation of the lens's iris mechanism. The heater shall not interfere with the oper ation of the camera electronics, and it shall not cause interference with the video signal.
6.The enclosure shall be light -colored and shall include a sun shield to minimize solar heating. The front edge of the sunshield shall protrude beyond the front edge of the environmental enclosure and shall include provision to divert water flow to the sides of the sunshield. The amount of overhang of the sun shield shall be adjustable to block the view of the horizon to prevent direct sunlight from entering the lens. Any plastics used in the enclosure shall include ultra violet inhibitors.
7.The total weight of the image sensor in the environmental enclosure with sunshield shall be less than 20 lbs.
8.Camera mounting hardware shall allow for vertical or horizontal mounting to the camera enclosure.
1020.02.2 6 Maintenance and Support: Maintenance and
support is required from the manufacturer for 10 years. The equipment manufacturer shall maintain an adequate inventory of parts to support maintenance and repair of the video detection system. These parts shall be available for delivery within 48 hours of placement of an order. The equipment manufacturer shall maintain an ongoing program of technical support for the video detection system. The equipment manufacturer shall provide on -site technical support and support on any special circuitry that may be required in certain applications. The equipment manufacturer shall be on call 24/7 and be present at any designated state signal location within 12 hours of notification. The contact information shall be provided to the State Traffic Signal Engineer at Traffic Services and continually updated.
1020.02.2 7 Warranty: All material and workmanship shall be
covered by supplier(s’)/manufacturer(s’) guarantee and/or warranty for a period of a minimum of 2 years or longer, if offered by the manufacturer. Warranty period shall begin the day the video detection system is activated, either as new order or warranty repair. The equipment manufacturer shall bear all expenses connected with return of any equipme nt which the Department deems necessary to return for adjustments during warranty period.
5.A thermostatically controlled heater shall be at the front of the enclosure to prevent the formation of ice and condensation, as well as to assure proper operation of the lens's iris mechanism. The heater shall not interfere with the oper ation of the camera electronics, and it shall not cause interference with the video signal.
6.The enclosure shall be light -colored and shall include a sun shield to minimize solar heating. The front edge of the sunshield shall protrude beyond the front edge of the environmental enclosure and shall include provision to divert water flow to the sides of the sunshield. The amount of overhang of the sun shield shall be adjustable to block the view of the horizon to prevent direct sunlight from entering the lens. Any plastics used in the enclosure shall include ultra violet inhibitors.
7.The total weight of the image sensor in the environmental enclosure with sunshield shall be less than 20 lbs.
8.Camera mounting hardware shall allow for vertical or horizontal mounting to the camera enclosure.
1020.02.2 6 Maintenance and Support: Maintenance and
support is required from the manufacturer for 10 years. The equipment manufacturer shall maintain an adequate inventory of parts to support maintenance and repair of the video detection system. These parts shall be available for delivery within 48 hours of placement of an order. The equipment manufacturer shall maintain an ongoing program of technical support for the video detection system. The equipment manufacturer shall provide on -site technical support and support on any special circuitry that may be required in certain applications. The equipment manufacturer shall be on call 24/7 and be present at any designated state signal location within 12 hours of notification. The contact information shall be provided to the State Traffic Signal Engineer at Traffic Services and continually updated.
1020.02.2 7 Warranty: All material and workmanship shall be
covered by supplier(s’)/manufacturer(s’) guarantee and/or warranty for a period of a minimum of 2 years or longer, if offered by the manufacturer. Warranty period shall begin the day the video detection system is activated, either as new order or warranty repair. The equipment manufacturer shall bear all expenses connected with return of any equipme nt which the Department deems necessary to return for adjustments during warranty period.
5.A thermostatically controlled heater shall be at the front of the enclosure to prevent the formation of ice and condensation, as well as to assure proper operation of the lens's iris mechanism. The heater shall not interfere with the oper ation of the camera electronics, and it shall not cause interference with the video signal.
6.The enclosure shall be light -colored and shall include a sun shield to minimize solar heating. The front edge of the sunshield shall protrude beyond the front edge of the environmental enclosure and shall include provision to divert water flow to the sides of the sunshield. The amount of overhang of the sun shield shall be adjustable to block the view of the horizon to prevent direct sunlight from entering the lens. Any plastics used in the enclosure shall include ultra violet inhibitors.
7.The total weight of the image sensor in the environmental enclosure with sunshield shall be less than 20 lbs.
8.Camera mounting hardware shall allow for vertical or horizontal mounting to the camera enclosure.
1020.02.2 6 Maintenance and Support: Maintenance and
support is required from the manufacturer for 10 years. The equipment manufacturer shall maintain an adequate inventory of parts to support maintenance and repair of the video detection system. These parts shall be available for delivery within 48 hours of placement of an order. The equipment manufacturer shall maintain an ongoing program of technical support for the video detection system. The equipment manufacturer shall provide on -site technical support and support on any special circuitry that may be required in certain applications. The equipment manufacturer shall be on call 24/7 and be present at any designated state signal location within 12 hours of notification. The contact information shall be provided to the State Traffic Signal Engineer at Traffic Services and continually updated.
1020.02.2 7 Warranty: All material and workmanship shall be
covered by supplier(s’)/manufacturer(s’) guarantee and/or warranty for a period of a minimum of 2 years or longer, if offered by the manufacturer. Warranty period shall begin the day the video detection system is activated, either as new order or warranty repair. The equipment manufacturer shall bear all expenses connected with return of any equipme nt which the Department deems necessary to return for adjustments during warranty period. Equipment manufacturer(s) shall make all engineering data, diagrams, and software changes or improvements available to the Department at no additional cost.
1020.02.3 Pedestria n Pushbuttons:
1020.02.3 1 Housing: The pedestrian push button housing shall
be weather -tight and tamper -proof. Housing shall be designed to prevent an electrical shock. It shall have provisions for grounding in accordance with the National Electrical Code (NEC). Pedestrian push button housing shall be cast from aluminum alloy, smooth, and free of blemishes. The manufacturer’s name or trademark shall be located on the housing. Both housing and cover shall have an anodized conversion coating to provide a proper bas e for paint adhesion. The assembly shall match the signal head’s color. Apply paint or powder coat to match the color of the signal heads. All bolts, nuts, washer, lock washers, screws, and other assembly hardware shall be galvanized steel, stainless ste el, or dichromate sealed aluminum. When dissimilar metals are used, the metals shall be so selected or insulated to prevent corrosion. The bottom provisions of the housing shall be tapped for and provided with a 1/2 -inch National Pipe Tapered (NPT) thread ed conduit plug. The back of the push button housing shall be provided with a hole capable of being threaded for a 1/2 - inch NPT threaded conduit plug and capped with a non -threaded 1/2 - inch plastic plug. The back mounting provisions of the housing sha ll be designed to accommodate pole diameters from 3 inches to 14 inches.
1020.02.3 2 Push Button: The push button switch shall be
actuated by a plunger with a minimum 2 -inch convex diameter. The assembly shall be designed so that the maximum plunger travel does not exceed the switch travel. A spring shall be installed between the plunger and switch. The spring shall provide an operating force of less than 5 lbs. A protective shroud shall encircle the plunger to deter vandalism. The shroud shall be cast as an integral part of the cover. There shall be a moisture barrier between the plunger and the s witch. The assembly shall conform to all minimum requirements set forth with the American with Disabilities Act.
1020.02.3 3 Wiring and Electrical Requirements: The switch
shall have terminal connection points on back to allow for an electrical Equipment manufacturer(s) shall make all engineering data, diagrams, and software changes or improvements available to the Department at no additional cost.
1020.02.3 Pedestria n Pushbuttons:
1020.02.3 1 Housing: The pedestrian push button housing shall
be weather -tight and tamper -proof. Housing shall be designed to prevent an electrical shock. It shall have provisions for grounding in accordance with the National Electrical Code (NEC). Pedestrian push button housing shall be cast from aluminum alloy, smooth, and free of blemishes. The manufacturer’s name or trademark shall be located on the housing. Both housing and cover shall have an anodized conversion coating to provide a proper bas e for paint adhesion. The assembly shall match the signal head’s color. Apply paint or powder coat to match the color of the signal heads. All bolts, nuts, washer, lock washers, screws, and other assembly hardware shall be galvanized steel, stainless ste el, or dichromate sealed aluminum. When dissimilar metals are used, the metals shall be so selected or insulated to prevent corrosion. The bottom provisions of the housing shall be tapped for and provided with a 1/2 -inch National Pipe Tapered (NPT) thread ed conduit plug. The back of the push button housing shall be provided with a hole capable of being threaded for a 1/2 - inch NPT threaded conduit plug and capped with a non -threaded 1/2 - inch plastic plug. The back mounting provisions of the housing sha ll be designed to accommodate pole diameters from 3 inches to 14 inches.
1020.02.3 2 Push Button: The push button switch shall be
actuated by a plunger with a minimum 2 -inch convex diameter. The assembly shall be designed so that the maximum plunger travel does not exceed the switch travel. A spring shall be installed between the plunger and switch. The spring shall provide an operating force of less than 5 lbs. A protective shroud shall encircle the plunger to deter vandalism. The shroud shall be cast as an integral part of the cover. There shall be a moisture barrier between the plunger and the s witch. The assembly shall conform to all minimum requirements set forth with the American with Disabilities Act.
1020.02.3 3 Wiring and Electrical Requirements: The switch
shall have terminal connection points on back to allow for an electrical Equipment manufacturer(s) shall make all engineering data, diagrams, and software changes or improvements available to the Department at no additional cost.
1020.02.3 Pedestria n Pushbuttons:
1020.02.3 1 Housing: The pedestrian push button housing shall
be weather -tight and tamper -proof. Housing shall be designed to prevent an electrical shock. It shall have provisions for grounding in accordance with the National Electrical Code (NEC). Pedestrian push button housing shall be cast from aluminum alloy, smooth, and free of blemishes. The manufacturer’s name or trademark shall be located on the housing. Both housing and cover shall have an anodized conversion coating to provide a proper bas e for paint adhesion. The assembly shall match the signal head’s color. Apply paint or powder coat to match the color of the signal heads. All bolts, nuts, washer, lock washers, screws, and other assembly hardware shall be galvanized steel, stainless ste el, or dichromate sealed aluminum. When dissimilar metals are used, the metals shall be so selected or insulated to prevent corrosion. The bottom provisions of the housing shall be tapped for and provided with a 1/2 -inch National Pipe Tapered (NPT) thread ed conduit plug. The back of the push button housing shall be provided with a hole capable of being threaded for a 1/2 - inch NPT threaded conduit plug and capped with a non -threaded 1/2 - inch plastic plug. The back mounting provisions of the housing sha ll be designed to accommodate pole diameters from 3 inches to 14 inches.
1020.02.3 2 Push Button: The push button switch shall be
actuated by a plunger with a minimum 2 -inch convex diameter. The assembly shall be designed so that the maximum plunger travel does not exceed the switch travel. A spring shall be installed between the plunger and switch. The spring shall provide an operating force of less than 5 lbs. A protective shroud shall encircle the plunger to deter vandalism. The shroud shall be cast as an integral part of the cover. There shall be a moisture barrier between the plunger and the s witch. The assembly shall conform to all minimum requirements set forth with the American with Disabilities Act.
1020.02.3 3 Wiring and Electrical Requirements: The switch
shall have terminal connection points on back to allow for an electrical Equipment manufacturer(s) shall make all engineering data, diagrams, and software changes or improvements available to the Department at no additional cost.
1020.02.3 Pedestria n Pushbuttons:
1020.02.3 1 Housing: The pedestrian push button housing shall
be weather -tight and tamper -proof. Housing shall be designed to prevent an electrical shock. It shall have provisions for grounding in accordance with the National Electrical Code (NEC). Pedestrian push button housing shall be cast from aluminum alloy, smooth, and free of blemishes. The manufacturer’s name or trademark shall be located on the housing. Both housing and cover shall have an anodized conversion coating to provide a proper bas e for paint adhesion. The assembly shall match the signal head’s color. Apply paint or powder coat to match the color of the signal heads. All bolts, nuts, washer, lock washers, screws, and other assembly hardware shall be galvanized steel, stainless ste el, or dichromate sealed aluminum. When dissimilar metals are used, the metals shall be so selected or insulated to prevent corrosion. The bottom provisions of the housing shall be tapped for and provided with a 1/2 -inch National Pipe Tapered (NPT) thread ed conduit plug. The back of the push button housing shall be provided with a hole capable of being threaded for a 1/2 - inch NPT threaded conduit plug and capped with a non -threaded 1/2 - inch plastic plug. The back mounting provisions of the housing sha ll be designed to accommodate pole diameters from 3 inches to 14 inches.
1020.02.3 2 Push Button: The push button switch shall be
actuated by a plunger with a minimum 2 -inch convex diameter. The assembly shall be designed so that the maximum plunger travel does not exceed the switch travel. A spring shall be installed between the plunger and switch. The spring shall provide an operating force of less than 5 lbs. A protective shroud shall encircle the plunger to deter vandalism. The shroud shall be cast as an integral part of the cover. There shall be a moisture barrier between the plunger and the s witch. The assembly shall conform to all minimum requirements set forth with the American with Disabilities Act.
1020.02.3 3 Wiring and Electrical Requirements: The switch
shall have terminal connection points on back to allow for an electrical Equipment manufacturer(s) shall make all engineering data, diagrams, and software changes or improvements available to the Department at no additional cost.
1020.02.3 Pedestria n Pushbuttons:
1020.02.3 1 Housing: The pedestrian push button housing shall
be weather -tight and tamper -proof. Housing shall be designed to prevent an electrical shock. It shall have provisions for grounding in accordance with the National Electrical Code (NEC). Pedestrian push button housing shall be cast from aluminum alloy, smooth, and free of blemishes. The manufacturer’s name or trademark shall be located on the housing. Both housing and cover shall have an anodized conversion coating to provide a proper bas e for paint adhesion. The assembly shall match the signal head’s color. Apply paint or powder coat to match the color of the signal heads. All bolts, nuts, washer, lock washers, screws, and other assembly hardware shall be galvanized steel, stainless ste el, or dichromate sealed aluminum. When dissimilar metals are used, the metals shall be so selected or insulated to prevent corrosion. The bottom provisions of the housing shall be tapped for and provided with a 1/2 -inch National Pipe Tapered (NPT) thread ed conduit plug. The back of the push button housing shall be provided with a hole capable of being threaded for a 1/2 - inch NPT threaded conduit plug and capped with a non -threaded 1/2 - inch plastic plug. The back mounting provisions of the housing sha ll be designed to accommodate pole diameters from 3 inches to 14 inches.
1020.02.3 2 Push Button: The push button switch shall be
actuated by a plunger with a minimum 2 -inch convex diameter. The assembly shall be designed so that the maximum plunger travel does not exceed the switch travel. A spring shall be installed between the plunger and switch. The spring shall provide an operating force of less than 5 lbs. A protective shroud shall encircle the plunger to deter vandalism. The shroud shall be cast as an integral part of the cover. There shall be a moisture barrier between the plunger and the s witch. The assembly shall conform to all minimum requirements set forth with the American with Disabilities Act.
1020.02.3 3 Wiring and Electrical Requirements: The switch
shall have terminal connection points on back to allow for an electrical spade connection to the back of the switch allowing user to connect twisted pair directly to the back of the switch. Wire and wire nut connections from the back of the switch shall not be acceptable. The switch assembly shall be capable of operating in temperature ranges of 20 ºF through 120 ºF. The switch assembly shall be electrically rated to carry 25 amps at 125 volts AC, 250 volts maximum. The switch assembly must have the following recognized certifications and/or approval: UL, CSSA, Mil Spec # MIL -S-8805. 1 0 2 0 . 0 2 . 4 Wireless Magnetometer Vehicle Detection System: Only Wireless Magnetometer Vehicle Detection Systems on the Traffic Operations Approved Products List will be acc epted.
1020.03 Traffic Signal Hardw Are and Equipment.
1020.03.1 General: This subsection defines the general
requirements that apply to all hardware and equipment not specifically listed. When design tests are specified, provide documentation indicating that such tests have been satisfactorily completed.
1020.03.2 Miscellaneous Hardware: Screws, nuts, and lock
washers s hall be stainless steel or galvanized in accordance with Section 811. Do not use self -tapping screws unless approved.
1020.03.3 Pedestal Anchor Bolts: Furnish steel ancho r bolts as
shown on the plans and fit with one hex nut and one washer. Nuts, washers, and anchor bolts shall be galvanized in accordance with ASTM A153.
1020.03.4 Support Cable (Span): Support cable for interconnect
and detector support cable shall be 1/4 -inch o utside diameter and signal support cable and guy wire shall be 3/8 -inch outside diameter and shall comply with ASTM A475, 7 -strand Siemens -Martin grade with Class A coating.
1020.03.5 Guy Components: Guying components and hardware
shall be galvanized in accordanc e with ASTM A123 and ASTM A153. Guy clamps shall be steel, 3 -bolt type, 6 inches in length, and of proper strand size to fit both sizes of cable. Clamp bolts shall have an upset shoulder fitting into the clamp plate.
1020.03.6 Traffic Signal Conductors: Furnish 600 volt insulated
THHN/THWN or XHHW cable. Filler material, when used, shall be
Source: Louisiana Standard Specifications for Roads and Bridges, 2016 Edition. Pages 1129–1133 of 1,145.