The hanger shall be as shown on the plans and shall conform to the requirements of the clamp, housing and terminal block, plug, and adapter.
1020.01.7 1 Clamp: The clamp shall be capable of attaching to a
1/4-inch to 7/16 -inch support cable and shall attach to or be integral with a balance ad justing device and a suitable weatherproof entrance for signal cable. The support cable clamp shall utilize a minimum of two “J” or “U” type bolts 3/8 -inch or larger. A 5/8 -inch clevis type suspension clamp shall be provided with a 5/8 -inch diameter. Th e balance adjustor shall be suitable for mating with a clevis -type clamp having a horizontal clearance of 5/8 inch and pin of 5/8 -inch. All steel shall be galvanized in accordance with ASTM A153.
1020.01.7 2 Housing: Only Traffic Signal Heads on the Traffic
Operat ions Approved Products List will be accepted. The housing and accessories shall be high -strength aluminum alloy and shall be equipped with a door of similar material. The door shall be held shut by a device operable with one hand without use of tools and shall not be easily removable. The door, when open, shall provide complete access to the interior of the housing and shall include a device to hold the door open while working inside the hanger if it will not remain open. The housing shall be equipped wi th two or more weatherproofed openings for signal cable entrance. The openings shall be equipped with suitable bushings for cable protection. Cable entrances shall be capable of accommodating three signal cables 11/16 -inch in diameter. The housing shall be provided with a permanently mounted clamping device to prevent the cable from twisting. The clamping device shall not damage the cable jacket, insulation, or break wires. The housing shall be provided with a 3 1/2 -inch-by-3 1/2 -inch cast aluminum flang e adaptor as shown on the plans for connecting to the signal head or bracket.
1020.01.7 3 Terminal Block and Plug: An easily accessible
pressure type terminal block shall be located in the housing and shall accommodate from twelve or eighteen separate lines, as spe cified. Each terminal shall be permanently numbered for identification, shall accommodate a minimum of two AWG No. 12 conductors, and shall be sufficiently rugged to permit tightening for proper electrical connection without damaging the wire. The termina l block shall be wired to a multi -circuit female jack connector mounted in the housing and aligned in accordance with the plans. A minimum size No. 18 AWG wire, with 600 -volt polyethylene or polyvinylchloride insulation, shall be used between the terminal strip and the jack connector. The numbered terminals on the terminal strip shall be wired to the corresponding numbered pin in the jack connector. A suitable male plug with clamp for the corresponding female jack connector shall be furnished and shall be equipped with 4 feet of cabled leads for connection to the signal heads. Wire shall be No. 18 AWG, 600 -volt polyethylene or polyvinylchloride insulated and neatly cabled.
1020.02 Traffic Detectors An D Associated
EQUIPMENT.
1020.02.1 Loop Detectors: Detector units for signalized
intersections are included as part of DOTD Traffic Control Standard 18A. Detector units required at remote vehicle detection locations shall comply with NEMA TS1, Section 15, with or without delay and extension timing as specified. The two type s of inductive detector units are specified are those with and those without the ability to delay and extend a call, NEMA Type 1 and Type 1T. Detector units shall be suitable for accurate detection of vehicles from motorcycles to tractor -trailer combinatio ns which ordinarily travel public streets and highways with sufficient conductive material, suitably located to permit recognition and response by the detector system. Detector units shall also comply with NEMA TS1, Section 15.2.6.
1020.02.1 1 Size and Case: The am plifier case shall be
constructed of rugged metallic material with a protective coating. A hand - tool-removable cover shall be provided to allow access to internal circuitry.
1020.02.1 2 Connectors, Switches, and Fuses: Switches,
connectors, and fuses shall be located on the front of the unit.
1.Permanently label each switch to identify its function. Permanently label each position to identify its mode of operation. Each mode of operation shall be simple to program with one switch position assigned to each function.
2.Provide a single connector on the front of the unit to comply with NEMA TS1, Section 15.2.28.1. This connector shall mate with cable connections MS 3106A -18-1S.
3.Plug wiring shall be as follows. A minimum size No. 18 AWG wire, with 600 -volt polyethylene or polyvinylchloride insulation, shall be used between the terminal strip and the jack connector. The numbered terminals on the terminal strip shall be wired to the corresponding numbered pin in the jack connector. A suitable male plug with clamp for the corresponding female jack connector shall be furnished and shall be equipped with 4 feet of cabled leads for connection to the signal heads. Wire shall be No. 18 AWG, 600 -volt polyethylene or polyvinylchloride insulated and neatly cabled.
1020.02 Traffic Detectors An D Associated
EQUIPMENT.
1020.02.1 Loop Detectors: Detector units for signalized
intersections are included as part of DOTD Traffic Control Standard 18A. Detector units required at remote vehicle detection locations shall comply with NEMA TS1, Section 15, with or without delay and extension timing as specified. The two type s of inductive detector units are specified are those with and those without the ability to delay and extend a call, NEMA Type 1 and Type 1T. Detector units shall be suitable for accurate detection of vehicles from motorcycles to tractor -trailer combinatio ns which ordinarily travel public streets and highways with sufficient conductive material, suitably located to permit recognition and response by the detector system. Detector units shall also comply with NEMA TS1, Section 15.2.6.
1020.02.1 1 Size and Case: The am plifier case shall be
constructed of rugged metallic material with a protective coating. A hand - tool-removable cover shall be provided to allow access to internal circuitry.
1020.02.1 2 Connectors, Switches, and Fuses: Switches,
connectors, and fuses shall be located on the front of the unit.
1.Permanently label each switch to identify its function. Permanently label each position to identify its mode of operation. Each mode of operation shall be simple to program with one switch position assigned to each function.
2.Provide a single connector on the front of the unit to comply with NEMA TS1, Section 15.2.28.1. This connector shall mate with cable connections MS 3106A -18-1S.
3.Plug wiring shall be as follows. A minimum size No. 18 AWG wire, with 600 -volt polyethylene or polyvinylchloride insulation, shall be used between the terminal strip and the jack connector. The numbered terminals on the terminal strip shall be wired to the corresponding numbered pin in the jack connector. A suitable male plug with clamp for the corresponding female jack connector shall be furnished and shall be equipped with 4 feet of cabled leads for connection to the signal heads. Wire shall be No. 18 AWG, 600 -volt polyethylene or polyvinylchloride insulated and neatly cabled.
1020.02 Traffic Detectors An D Associated
EQUIPMENT.
1020.02.1 Loop Detectors: Detector units for signalized
intersections are included as part of DOTD Traffic Control Standard 18A. Detector units required at remote vehicle detection locations shall comply with NEMA TS1, Section 15, with or without delay and extension timing as specified. The two type s of inductive detector units are specified are those with and those without the ability to delay and extend a call, NEMA Type 1 and Type 1T. Detector units shall be suitable for accurate detection of vehicles from motorcycles to tractor -trailer combinatio ns which ordinarily travel public streets and highways with sufficient conductive material, suitably located to permit recognition and response by the detector system. Detector units shall also comply with NEMA TS1, Section 15.2.6.
1020.02.1 1 Size and Case: The am plifier case shall be
constructed of rugged metallic material with a protective coating. A hand - tool-removable cover shall be provided to allow access to internal circuitry.
1020.02.1 2 Connectors, Switches, and Fuses: Switches,
connectors, and fuses shall be located on the front of the unit.
1.Permanently label each switch to identify its function. Permanently label each position to identify its mode of operation. Each mode of operation shall be simple to program with one switch position assigned to each function.
2.Provide a single connector on the front of the unit to comply with NEMA TS1, Section 15.2.28.1. This connector shall mate with cable connections MS 3106A -18-1S.
3.Plug wiring shall be as follows. A minimum size No. 18 AWG wire, with 600 -volt polyethylene or polyvinylchloride insulation, shall be used between the terminal strip and the jack connector. The numbered terminals on the terminal strip shall be wired to the corresponding numbered pin in the jack connector. A suitable male plug with clamp for the corresponding female jack connector shall be furnished and shall be equipped with 4 feet of cabled leads for connection to the signal heads. Wire shall be No. 18 AWG, 600 -volt polyethylene or polyvinylchloride insulated and neatly cabled.
1020.02 Traffic Detectors An D Associated
EQUIPMENT.
1020.02.1 Loop Detectors: Detector units for signalized
intersections are included as part of DOTD Traffic Control Standard 18A. Detector units required at remote vehicle detection locations shall comply with NEMA TS1, Section 15, with or without delay and extension timing as specified. The two type s of inductive detector units are specified are those with and those without the ability to delay and extend a call, NEMA Type 1 and Type 1T. Detector units shall be suitable for accurate detection of vehicles from motorcycles to tractor -trailer combinatio ns which ordinarily travel public streets and highways with sufficient conductive material, suitably located to permit recognition and response by the detector system. Detector units shall also comply with NEMA TS1, Section 15.2.6.
1020.02.1 1 Size and Case: The am plifier case shall be
constructed of rugged metallic material with a protective coating. A hand - tool-removable cover shall be provided to allow access to internal circuitry.
1020.02.1 2 Connectors, Switches, and Fuses: Switches,
connectors, and fuses shall be located on the front of the unit.
1.Permanently label each switch to identify its function. Permanently label each position to identify its mode of operation. Each mode of operation shall be simple to program with one switch position assigned to each function.
2.Provide a single connector on the front of the unit to comply with NEMA TS1, Section 15.2.28.1. This connector shall mate with cable connections MS 3106A -18-1S.
3.Plug wiring shall be as follows. A minimum size No. 18 AWG wire, with 600 -volt polyethylene or polyvinylchloride insulation, shall be used between the terminal strip and the jack connector. The numbered terminals on the terminal strip shall be wired to the corresponding numbered pin in the jack connector. A suitable male plug with clamp for the corresponding female jack connector shall be furnished and shall be equipped with 4 feet of cabled leads for connection to the signal heads. Wire shall be No. 18 AWG, 600 -volt polyethylene or polyvinylchloride insulated and neatly cabled.
1020.02 Traffic Detectors An D Associated
EQUIPMENT.
1020.02.1 Loop Detectors: Detector units for signalized
intersections are included as part of DOTD Traffic Control Standard 18A. Detector units required at remote vehicle detection locations shall comply with NEMA TS1, Section 15, with or without delay and extension timing as specified. The two type s of inductive detector units are specified are those with and those without the ability to delay and extend a call, NEMA Type 1 and Type 1T. Detector units shall be suitable for accurate detection of vehicles from motorcycles to tractor -trailer combinatio ns which ordinarily travel public streets and highways with sufficient conductive material, suitably located to permit recognition and response by the detector system. Detector units shall also comply with NEMA TS1, Section 15.2.6.
1020.02.1 1 Size and Case: The am plifier case shall be
constructed of rugged metallic material with a protective coating. A hand - tool-removable cover shall be provided to allow access to internal circuitry.
1020.02.1 2 Connectors, Switches, and Fuses: Switches,
connectors, and fuses shall be located on the front of the unit.
1.Permanently label each switch to identify its function. Permanently label each position to identify its mode of operation. Each mode of operation shall be simple to program with one switch position assigned to each function.
2.Provide a single connector on the front of the unit to comply with NEMA TS1, Section 15.2.28.1. This connector shall mate with cable connections MS 3106A -18-1S.
3.Plug wiring shall be as follows. PIN1 FUNCTION Pin A AC (-) Pin B Relay Common Pin C AC (+) Pins D & E Loop Leads Pin F Relay (N.O.) Pin G Relay (N.C.) Pin H Chassis Ground Pin I Spare Pin J Delay Override 1No pins shall be used for any other purpose than those listed above.
4.Permanently label fuse holders t o identify the size of the fuse.
1020.02.1 3 Electrical Characteristics
1.Detector unit outputs shall be a relay type as referenced in NEMA TS1, Section 15.2.29.1. The output operation shall be indicated by a high intensity light emitting diode.
2.Color coding for the wi re shall be as follows: Function Color Code Detector Wiring Not Specified AC(+) Black AC(-) White Relay Common White/Black Stripe Ground Green
3.The operation of the detector unit shall comply with NEMA TS1, Section 15.2.1. In addition, the detector unit shall retune to a new inductance value following an excessively large inductance change.
4.When sensor loop and loop lead -in network falls outside the specifications in NEMA TS1, Section 15.2.13, the detector shall generate a failsafe conti nuous output in both presence and pulse modes. The continuous output shall remain until the memory is cleared by removing power or resetting. PIN1 FUNCTION Pin A AC (-) Pin B Relay Common Pin C AC (+) Pins D & E Loop Leads Pin F Relay (N.O.) Pin G Relay (N.C.) Pin H Chassis Ground Pin I Spare Pin J Delay Override 1No pins shall be used for any other purpose than those listed above.
4.Permanently label fuse holders t o identify the size of the fuse.
1020.02.1 3 Electrical Characteristics
1.Detector unit outputs shall be a relay type as referenced in NEMA TS1, Section 15.2.29.1. The output operation shall be indicated by a high intensity light emitting diode.
2.Color coding for the wi re shall be as follows: Function Color Code Detector Wiring Not Specified AC(+) Black AC(-) White Relay Common White/Black Stripe Ground Green
3.The operation of the detector unit shall comply with NEMA TS1, Section 15.2.1. In addition, the detector unit shall retune to a new inductance value following an excessively large inductance change.
4.When sensor loop and loop lead -in network falls outside the specifications in NEMA TS1, Section 15.2.13, the detector shall generate a failsafe conti nuous output in both presence and pulse modes. The continuous output shall remain until the memory is cleared by removing power or resetting.
5.When specified, the detector unit shall have the ability to delay and extend a call to the controller. The Delay /Extension operations shall comply with NEMA TS1, Section 15.2.24. The delay time shall begin when a vehicle enters the detection area until the call relay is closed representing activation and shall be selectable in the range between 0 and 30 seconds. The extension time shall begin timing when the vehicle leaves the detection area, continuing the activation for the selected time. The time shall be selectable in the range of 0 to 7 1/2 seconds.
6.The detector unit shall have at least three selectable frequen cies which shall be visible at all times on the front of the detector unit.
7.The Sensitivity Control shall comply with NEMA TS1, Section 15.2.14 and Section 15.2.15. There shall be at least three selectable sensitivity ranges located on the front of the de tector unit. The sensitivities shall be nominally 0.02 percent, 0.08 percent, and 0.32 percent change in total loop inductance.
8.The modes of operation shall comply with NEMA TS1, Section 15.2.17. There shall be two presence modes and one pulse mode. The selected mode shall be indicated at all times on the front of the detector unit. Long presence mode shall continue to detect the same vehicle within the detection area for at least 3 1/2 minutes for a Class 1 type test vehicle. Medium presence mode shall continue to detect the same vehicle within the detection area for at least 20 seconds for a Class 1 type test vehicle.
1020.02.1 4 Fail Safe: The detector shall operate with the sensor
loop shorted to ground or of poor quality. The unit shall generate a continuous call when returning failed sensor loop, failed detector unit, or power failure.
1020.02.1 5 Loop Detector Sealants: Comply with Table
1020 -1:
5.When specified, the detector unit shall have the ability to delay and extend a call to the controller. The Delay /Extension operations shall comply with NEMA TS1, Section 15.2.24. The delay time shall begin when a vehicle enters the detection area until the call relay is closed representing activation and shall be selectable in the range between 0 and 30 seconds. The extension time shall begin timing when the vehicle leaves the detection area, continuing the activation for the selected time. The time shall be selectable in the range of 0 to 7 1/2 seconds.
6.The detector unit shall have at least three selectable frequen cies which shall be visible at all times on the front of the detector unit.
7.The Sensitivity Control shall comply with NEMA TS1, Section 15.2.14 and Section 15.2.15. There shall be at least three selectable sensitivity ranges located on the front of the de tector unit. The sensitivities shall be nominally 0.02 percent, 0.08 percent, and 0.32 percent change in total loop inductance.
8.The modes of operation shall comply with NEMA TS1, Section 15.2.17. There shall be two presence modes and one pulse mode. The selected mode shall be indicated at all times on the front of the detector unit. Long presence mode shall continue to detect the same vehicle within the detection area for at least 3 1/2 minutes for a Class 1 type test vehicle. Medium presence mode shall continue to detect the same vehicle within the detection area for at least 20 seconds for a Class 1 type test vehicle.
1020.02.1 4 Fail Safe: The detector shall operate with the sensor
loop shorted to ground or of poor quality. The unit shall generate a continuous call when returning failed sensor loop, failed detector unit, or power failure.
1020.02.1 5 Loop Detector Sealants: Comply with Table
1020 -1:
5.When specified, the detector unit shall have the ability to delay and extend a call to the controller. The Delay /Extension operations shall comply with NEMA TS1, Section 15.2.24. The delay time shall begin when a vehicle enters the detection area until the call relay is closed representing activation and shall be selectable in the range between 0 and 30 seconds. The extension time shall begin timing when the vehicle leaves the detection area, continuing the activation for the selected time. The time shall be selectable in the range of 0 to 7 1/2 seconds.
6.The detector unit shall have at least three selectable frequen cies which shall be visible at all times on the front of the detector unit.
7.The Sensitivity Control shall comply with NEMA TS1, Section 15.2.14 and Section 15.2.15. There shall be at least three selectable sensitivity ranges located on the front of the de tector unit. The sensitivities shall be nominally 0.02 percent, 0.08 percent, and 0.32 percent change in total loop inductance.
8.The modes of operation shall comply with NEMA TS1, Section 15.2.17. There shall be two presence modes and one pulse mode. The selected mode shall be indicated at all times on the front of the detector unit. Long presence mode shall continue to detect the same vehicle within the detection area for at least 3 1/2 minutes for a Class 1 type test vehicle. Medium presence mode shall continue to detect the same vehicle within the detection area for at least 20 seconds for a Class 1 type test vehicle.
1020.02.1 4 Fail Safe: The detector shall operate with the sensor
loop shorted to ground or of poor quality. The unit shall generate a continuous call when returning failed sensor loop, failed detector unit, or power failure.
1020.02.1 5 Loop Detector Sealants: Comply with Table
1020 -1: Table 1020 -1 Loop Detector Sealants Hot Applied Cold Applied Single Component Two Component Rapid Set Slow Set Physical Property Test Method Self Leveling Non- Sag Self Leveling Non- Sag Self Leveling Non- Sag Total Solids by weight,%, Min. ASTM D2834 60 60 60 60 60 60 Tack Free Time, hr, Max. ASTM C679 4 4 2 2 4 4 Rheological Properties ASTM C639 Type 1 Smooth surface Smooth surface Smooth surface Slump, mm ASTM D2202 7.6 7.6 7.6 Extrusion Rate, mL/min, Min. ASTM C1183 50 50 Hardness shore A, Min. ASTM D2240 10 10 10 10 10 10 Penetration @ 25°C, Min. ASTM D5 60 Softening Point, °C, Min. ASTM D36 82 Asphalt Compatibility1 ASTM D5329 pass pass pass pass pass pass pass Pot Life, minutes, Min. ASTM C881 12 12 30 30 Dielectric Strength, 60 Hz, Short Time test, Electrode 1 in air @ 25°C kV/mm, Min. ASTM D149 13.8 13.8 13.8 13.8 13.8 13.8 13.8 Flex @ -7°C, inch, 90° Bend ASTM D5329 pass pass pass pass pass pass pass 1Not applicable when used to seal portland cement concrete pavement
1020.02.2 Video Detection System: A Video Detection System
(VDS) monitors vehicles on a roadway via processing of video images and provides detector outputs to a traffic controller or similar device.
1020.02.2 1 System Function Requirement: The system
shall provide flexible detection zone placement anywhere within the combined f ield of view of the image sensors. Presence detector configurations shall be lines or boxes placed across lanes of traffic or lines Table 1020 -1 Loop Detector Sealants Hot Applied Cold Applied Single Component Two Component Rapid Set Slow Set Physical Property Test Method Self Leveling Non- Sag Self Leveling Non- Sag Self Leveling Non- Sag Total Solids by weight,%, Min. ASTM D2834 60 60 60 60 60 60 Tack Free Time, hr, Max. ASTM C679 4 4 2 2 4 4 Rheological Properties ASTM C639 Type 1 Smooth surface Smooth surface Smooth surface Slump, mm ASTM D2202 7.6 7.6 7.6 Extrusion Rate, mL/min, Min. ASTM C1183 50 50 Hardness shore A, Min. ASTM D2240 10 10 10 10 10 10 Penetration @ 25°C, Min. ASTM D5 60 Softening Point, °C, Min. ASTM D36 82 Asphalt Compatibility1 ASTM D5329 pass pass pass pass pass pass pass Pot Life, minutes, Min. ASTM C881 12 12 30 30 Dielectric Strength, 60 Hz, Short Time test, Electrode 1 in air @ 25°C kV/mm, Min. ASTM D149 13.8 13.8 13.8 13.8 13.8 13.8 13.8 Flex @ -7°C, inch, 90° Bend ASTM D5329 pass pass pass pass pass pass pass 1Not applicable when used to seal portland cement concrete pavement
1020.02.2 Video Detection System: A Video Detection System
(VDS) monitors vehicles on a roadway via processing of video images and provides detector outputs to a traffic controller or similar device.
1020.02.2 1 System Function Requirement: The system
shall provide flexible detection zone placement anywhere within the combined f ield of view of the image sensors. Presence detector configurations shall be lines or boxes placed across lanes of traffic or lines Table 1020 -1 Loop Detector Sealants Hot Applied Cold Applied Single Component Two Component Rapid Set Slow Set Physical Property Test Method Self Leveling Non- Sag Self Leveling Non- Sag Self Leveling Non- Sag Total Solids by weight,%, Min. ASTM D2834 60 60 60 60 60 60 Tack Free Time, hr, Max. ASTM C679 4 4 2 2 4 4 Rheological Properties ASTM C639 Type 1 Smooth surface Smooth surface Smooth surface Slump, mm ASTM D2202 7.6 7.6 7.6 Extrusion Rate, mL/min, Min. ASTM C1183 50 50 Hardness shore A, Min. ASTM D2240 10 10 10 10 10 10 Penetration @ 25°C, Min. ASTM D5 60 Softening Point, °C, Min. ASTM D36 82 Asphalt Compatibility1 ASTM D5329 pass pass pass pass pass pass pass Pot Life, minutes, Min. ASTM C881 12 12 30 30 Dielectric Strength, 60 Hz, Short Time test, Electrode 1 in air @ 25°C kV/mm, Min. ASTM D149 13.8 13.8 13.8 13.8 13.8 13.8 13.8 Flex @ -7°C, inch, 90° Bend ASTM D5329 pass pass pass pass pass pass pass 1Not applicable when used to seal portland cement concrete pavement
1020.02.2 Video Detection System: A Video Detection System
(VDS) monitors vehicles on a roadway via processing of video images and provides detector outputs to a traffic controller or similar device.
1020.02.2 1 System Function Requirement: The system
shall provide flexible detection zone placement anywhere within the combined f ield of view of the image sensors. Presence detector configurations shall be lines or boxes placed across lanes of traffic or lines 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
Source: Louisiana Standard Specifications for Roads and Bridges, 2016 Edition. Pages 1124–1128 of 1,145.