713Detectors

713.1 Description

713.1.1 Vehicle Detection System

This Work shall consist of fur nishing and installing a Vehicle Detection System that detects vehicles on a Roadway vi a processing of images and/or o bjects and provides detector outputs to a traffic controller.

713.1.2 Emergency Vehicle Optical Detector System

This Work consists of providing and installing an emergency veh icle optical detector (EVOD) or GPS systems at signa lized intersections, using optica l communication to identify the presence of priority vehicl es and instruct the Traffic Sign al controller to find and hold a desired Traffic Signal display.

713.1.3 Vehicle and Pedestrian Detectors

This Work consists of providi ng and installing vehicle detector s in Roadways and pedestrian push buttons on signal Standards.

713.1.4 Accessible Pedestrian Signal (APS)

Accessible Pedestrian Signal, or APS means a Pushbutton-Integr ated device that communicates information about Pedestrian Timing in a non-visua l manner, such as audible tones, speech messages, and vibrat ing surfaces, and has the fol lowing features to the extent that they are available from an APS manufacturer: 1. A Pushbutton Locator Tone; 2. A Pushbutton Actuation Tone and light in response to the but ton push to indicate that the button has been pressed; 3. An Audible Walk Indication; 4. A Vibrotactile Walk Indication; 5. Automatic volume adjustmen t in response to ambient sound; 6. A tactile arrow; 7. A Pushbutton Information Message; and 8. A Pushbutton with a two (2) inch minimum diameter.

713.1.4 1 Definitions

Audible Beaconing. The use of a permanently fixed sound source to provide direct ional orientation and crossing alignm ent information to pedestrians w ith visual impairments or blindness. Audible Walk Indication. An audible method of indicating the Walk Interval, either thr ough a Rapid Tick or Speech Message. When a Speech Message is the Aud ible Walk Indication, it shall follow the following model: “[Street name]. Walk sign i s on to cross [Street Name].” Control Surface. The vertical surface on whic h the pushbutton is located. Intersection. A location with one (1) or more pedestrian crosswalks; includ ing mid-block crossings, and with one (1) or m ore Visual Pedestrian Signals a ssociated with the crosswalks. Pedestrian Change Interval. The portion of the Pedestrian Ti ming during which the flashin g upraised hand, symbolizing “Don’t W alk,” is displayed and count down has begun, signaling that pedestrians should fini sh crossing the street. Pedestrian Timing. The cycle of the time allotted in the signal cycle to allow a pedestrian to cross the street. Pedestrian Timing consists of: (i) the Walk Interval and (ii) the Pedestrian Change Interval. Pushbutton Information Message. The information delivered audibly when the pushbutton is pressed and held for one (1) se cond or more during the flash ing or steady “Don’t Walk” indicator and during the countdown. The Pushbutton Information Message shall follow the model “Wait to cross [Street name] at [cross street name].” In formation on unusual intersection signalization or geometry may be provided followin g the crosswalk identification message. No other types of inf ormation may be provided. Pushbutton-Integrated Accessible Pedestrian Signal. An Accessible Pedestrian Signal in which all audible and vibrotactile information is provided from the pushbutton housing. The Pushbutton-Integrated APS may also activate an overhead speaker where Audible Beaconing is provided, as set forth in section below. Pushbutton Locator Tone. A repeating sound that informs approaching pedestrians of the APS. Pushbutton Locator Tones shall be easily locatable, shall have duration of 0.15 seconds or less, and shall repeat at one-second intervals while the vis ual flashing and steady “Don’t Walk” message appears on the Visual Pedestrian Signal. Rapid Tick. A ticking sound that repeats at the rate of ten (10) ticks pe r second. Speech Message. A spoken instruction that provides information to the pedestr ian with visual impairments or blindness about the street crossing location and Walk Interval. When a Speech Message is the Audible Wa lk Indication, it shall follow the following model: “[Street Name]. Walk sign is on to cross [Street Name].” Vibrotactile Walk Indication. A tactile arrow that contrasts with the background, is orient ed in the direction of travel on the associated crosswalk, and vib rates throughout the Walk Interval, indicating that t he Walk Interval is on. Visual Pedestrian Signal. A signal that provides information about Pedestrian Timing in a visual manner. Walk Indication. A method of informing the pedes trian that the Walk Interval h as begun. Walk Interval. The portion of the Pedestrian Ti ming during which the walking person, symbolizing “Walk,” is displayed, signaling that pedestrians ar e permitted to start to cross the street.

713.2 Materials

713.2.1 Video Vehicle Detection System

The Contractor shall provide a system with the following perfor mance requirements: 1. Complete intersection detection; 2. Automatic incident detection; 3. Freeway detection/management; 5. Vehicle counting/classification; 6. Collection of traffic statistics; 7. Turning movement analysis; 8. Wrong-way detection; 9. Enforcement; 10. Queue length analysis; and 11. Critical incidents in real time for traffic management. The Contractor shall provide a system with the following Equipm ent, installation, and support requirements: 1. A Video Processor (VP) including the following: 1.1. All necessary cables; 1.2. Harnesses; 1.3. Materials; 1.4. Fittings; 1.5. Field programming unit (FPU) as specified in the Contract; 1.6. All field assistance during installation (if specified in the Contract); 1.7. Software; 1.8. Training during installation; 1.9. Follow-up training; 1.10. Technical support after installation; and 1.11. Any miscellaneous components detailed in the Contract nec essary to provide a complete and operating video detection system at sign alized intersections; 2. Zoom lens closed circuit tele vision (CCTV) cameras at each i ntersection, as specified in the Contract, with focal length and zoom determine d by the manufacturer, to optimize performance; 3. Zoom lens camera (PTZ) for motorized pan and tilt operation with mounting assembly at each intersection with PTZ control receiver and dri ver when called for in the Contract; 4. Video hardware system, as specified by the manufacturer, con sisting of components necessary to maintain the quality of video signal; 5. Video power cable compatible with the system; and 6. Video coax cable compatible with the system.

713.2.1 1 Video Processor

The Contractor shall provide a VP system that detects vehicles in multiple Traffic Lanes using a minimum of 100 user-def inable detection zones. The Con tractor shall provide a system with interactive graphics that allows a user to define o r redefine detection zones. The Contractor shall ensure the VP calculates traffic parameters in real-time and provides local non-volatile data storage for later downloading and analysis. The Contractor shall provide a VP system that is capable of sim ultaneously processing information from video sources, including CCTV video cameras an d video players. The video sources may be synchronized or line locked. The Contractor sha ll ensure the system digitizes Section 713: Detectors Page 847 and analyzes the video at a rate of 30 times per second. The Contractor shall provide a VP system that detects the prese nce of vehicles in a minimum of 100 detection zones wit hin the combined field of vie w of the cameras. The Contractor shall provide a system that allows selection of different detector types and detector logical functions using software. Detector types incl ude the following: 1. Counting; 2. Presence; 3. Directional presence; 4. Speed (capable of reporting vehi cle classification based on length with software that allows a user to define three (3) length categories); 5. Station; and 6. Input. The Contractor shall provide a VP system that a user can discon nect after set up using the FPU. The Contractor shall ensure the VP is capable of the following: 1. Detecting vehicles as a stand-alone unit; 2. Calculating traffic parameters in real-time; and 3. Storing traffic parameters in its non-volatile memory. The Contractor shall provide a sy stem with user-selectable time intervals (or time slices) of ten (10) s, 20 s, 30 s, one (1) min, five (5) min, ten (10) min, 15 min, 30 min, or 60 min. The Contractor shall provide a flash memory within the VP to retain time interval data for later uploading to the FPU for analysis. The Contractor shall provide a system that allows retrieval of data stored in the non- volatile memory of the VP via a serial communications port or E thernet port. The Contractor shall make provision for downloading data via a modem and dial- up telephone lines, DSL, Ethernet, private cable or fiber optic network, and direct cabl e connection to another computer. The Contractor shall include the capability to capture a video image (snapshot) from a selected image sensor input and transmit the image to the FPU f or display in the VP. The Contractor shall ensure the system can compress the captured vi deo image to minimize the time needed to transmit the image.

713.2.1 2 Detection Zone Placement

The Contractor shall provide a video detection system that allo ws flexible detection zone placement anywhere and at any orientation within the combined f ield of view of the cameras. Lines placed across lanes of tra ffic or lines placed in-line wi th lanes of traffic when preferred or recommended by the manufacturer. The Contractor shall provide a system where a single detector line can replace multip le conventional detector loops connected in series. The Contractor shall ensure that the system allows overlapping of d etection zones capable of implementing logical functions, including "AND," "OR," "NAND," "N of M," and Delay/extend timing.

713.2.1 3 Detection Zone Programming

The Contractor shall locate and place the detection zone with a FPU capable of showing images of the detection zones s uperimposed on the video image o f traffic. Section 713: Detectors Page 848 The Contractor shall provide a system that changes the color or intensity of the detection zone on the monitor when a vehicle is detected, verifying prope r operation of the detection system. The system may use c olor changes to indicate detection Delay and extension timing.

713.2.1 4 Optimal Detection

The video detection system shall reliably detect vehicle presen ce when the camera is mounted 20 feet or higher above the Roadway, or as recommended by the manufacturer, and the length of the detection area or field of view is not greate r than 10 times the mounting height of the camera. The Department will require the camera to be mounted directly o ver the Roadway. The Contractor shall provide a system that allows a single camera, placed at the proper mounting location with the proper lens, to monitor from six (6) to eight (8) Traffic Lanes simultaneously. The Contractor shall ensure that the system detects vehicle pr esence with 98% accuracy under normal conditions (Day and night) and 96% accuracy under adverse conditions (fog, rain, snow, etc.), using standard camera optics, and in the abs ence of occlusion.

713.2.1 5 VP Mounting

The VP shall be shelf or rack-mountable and be able to fit in a conventional Traffic Signal controller cabinet.

713.2.1 6 VP Environment

The VP shall: 1. Operate reliably in the adverse environment found in the typ ical roadside Traffic Signal controller cabinet; 2. Meet the environmental requirements of NEMA TS1 and NEMA TS2 ; and 3. Withstand operating temperature of from -29 °F to +165 °F at 0% t o 9 5% r e l a t i v e humidity, non-condensing.

713.2.1 7 VP Electrical

The Contractor shall provide a VP, modular in design, with curr ent micro processing technology. The Contractor shall use gold-plated DIN connector s for the bus connections used to interconnect the modules of the VP. The Contractor shall provide a power supply for the VP that pro vides and automatically adapts to the following input power levels: 1. From 89 V to135 V AC, 60 Hz single phase or 12V to 24V DC; a nd 2. Allow for surge ratings in accordance with NEMA TS1 and NEMA TS2. The Contractor shall provide controller state information for d etection and extend/Delay timing functions with NEMA red/green inputs for up to 16 phases . The Contractor shall provide an Acceptable connector on the front of the VP for the inputs. The Contractor shall equip the VP with National Transmission St andards Committee (NTSC) (color) composite video i nputs, so signals from cameras or other synchronous, or non- synchronous, video sources process in real-time. The Contracto r shall use an Acceptable connector on the front of the VP for all video inputs. Section 713: Detectors Page 849 713.2.1.8 Field Programming Unit System When called for in the Contract, the Contractor shall provide a Field Programming Unit having communication capabilities as specified in the Plans as needed for set-up and viewing of vehicle detections. The Equi pment manufactures shall contac t the Departments Traffic Signal design Engineer for appro val prior to Bidding. This uni t shall be considered Incidental to Video and Radar Vehicle Detection System. The field programming unit shal l be capable of driving an exter nal current industry standard monitor, shall be capable of both battery and AC opera tion, and shall include required batteries, chargers, protective carrying case, and sys tem software.

713.2.1 9 Closed Circuit Television (CCTV) Cameras

The Contractor shall provide a video detection system that uses standard or high- definition, closed circuit detection (CCD) cameras as the video source for real-time vehicle detection, as required by manufacturer’s recommendations. The Contractor shall ensure that each camera meets the following minimum requirements: 1. Uses medium resolution, from ¼ inch to ½ inch, color cameras with a minimum of 470x400 TVL lines of resolution and an "auto-iris" motorized zo om lens selected uniquely for each site to optimize performance; 2. Uses NTSC, or CCIR video signals; 3. Each camera shall be housed, as a minimum, in NEMA 4 and IP6 6 water-resistant, dustproof and/or gas filled enclosure; 4. Uses a single industry Specif ication-connector for interconn ection to video and power cables. Provide optional v ideo and power cable configura tions if requested; 5. Securely mounted (to minimize sway and motion) in the field using a bracket or pedestal mount and/or pan and tilt unit and with a field-adjust able zoom to provide optimal field of view; 6. Equipped with a video surge protection device, a ground wire , and an in-line junction of the coaxial cable. Fasten this device securely and wrap in watertight Material; 7. Field video cables terminate in the Traffic Signal controlle r cabinet on each VP camera interface panel. Ensure that the panel provides lighten ing protection and terminating junctions between the field and each VP. Provide t erminal strips, lightening protection, and a ground buss for power cables from the cabinet to the cameras; and 8. When the connection between the camera and each VP is coaxia l cable, the coaxial cable used shall be a low loss 75 ohm precision video cable sui ted for outdoor installation, such as Belden 8281 or West Penn P806 as specifie d.

713.2.2 Radar Presence Detector (RPD)

The Radar Presence Detector (RPD) is a Frequency Modulated Cont inuous Wave (FMCW) radar device that provides accurate vehicle detection at the stop bar, and has the following features: 1. Reports real-time presence of both moving and stopped vehicl es; 2. Operating Frequency of 24.0 – 24.25 GHz (K-Band). K-Band pr ovides the widest allowable bandwidth. This larger bandwidth provides a higher r esolution signature with greater accuracy; 3. Real Time Presence Data in 10 Lanes; 4. The Availability of 16 zones and 16 channels with user selec table zone to channel Section 713: Detectors Page 850 mapping Zones can be linked together using OR and AND logic; 5. Fail-Safe Mode to put the intersection into recall if commun ication to the RPD is lost; and 6. No Cleaning or Adjustment nec essary to maintain performance.

713.2.2 1 Mounting and Positioning

1. Each RPD sensor shall be mounted on the backside of the oppo sing approaches mast-arm unless a special circumstance exists that prevents thi s mounting placement. 2. Each RPD sensor will be mounted at a height of 20 ft +/- fiv e (5) ft. The mounting height will be no more than 35 ft and no less than 15 ft. 3. Each RPD sensor shall be capable of being mounted at a minim um of a ten (10) ft offset from the nearest lane of interest. 4. Each RPD sensor shall be aligned so that the area of detecti on begins five (5) ft downstream of the stop-bar and continues upstream for 140 ft. 5. Each RPD Sensor will be mounted on a six (6) inch, two (2)-a xis heavy duty sensor mount that will be attached to the mast-arm by at least two (2) Band-it straps. 6. A 12 AWG stranded wire will be tapped to the pole and connec ted to the RPD’s grounding lug.

713.2.2 2 Connections and Cabling

1. A cable with a brass Mil-Spec connector will be connected to the sensor and run down the pole into a junction box mounted to the backside of th e signal pole or located per Signal Lab direction. 2. Silicon Dielectric Compound will be applied to the connectio n point between the sensor and the connector on the cable. 3. Bulk Cable will be terminated into the supplied junction box . The junction box will be located in the mast arm through the hand hole on the mast arm u pright or outside the pole at a minimum of ten (10) ft. The bulk cable will be r un from the junction box in the mast arm pole, thru condui t to the Traffic Signal cabine t. 4. Bulk Cable will be terminated into terminal blocks on a pre- assembled back plate located in the Traffic Signal Cabinet.

713.2.2 3 Traffic Cabinet Components

1. Each RPD system w ill have a pre-assembl ed backplate or cabin et interface installed into the traffic cabinet, which will include: AC/DC power conv ersion, Surge Protection, Terminal Blocks for cable landing, and Communicatio n Connection points. 2. The RPD shall use contact cl osure input file cards with two (2) or four (4) channel capabilitiesor direct SDLC communication to the Traffic Control ler. The contact closure input file cards for the RPD shall be compatible with i ndustry standard detector racks.

713.2.2 4 Number of RPD’s Per Intersection

1. There shall be one (1) RPD for each approach of the intersec tion requiring stop-bar detection. 1. The RPD shall consume less than ten (10) W. 2. The RPD shall operate with a DC input between nine (9) VDC a nd 28 VDC. 3. The RPD shall have onboard surge protection.

713.2.2 6 Communication Ports

1. The RPD shall have two (2) communication ports, and both por ts shall communicate independently and simultaneously. 2. The two (2) communication ports will allow remote communicat ions without interrupting the operation of the RPD and its interface to the contact closure cards and Traffic Signal controller.

713.2.2 7 Configuration

1. The RPD shall have a method for automatically defining Traff ic Lanes, stop bars and zones without requiring user int ervention. This auto-confi guration process shall execute on a processor internal to the RPD and shall not requir e an external PC or other processor. 2. The auto-configuration method shall not prohibit the ability of the user to manually adjust the RPD configuration. 3. The RPD shall support the configuring of lanes, stop bars an d detection zones in one (1) ft (0.3-m) increments. 4. The RPD shall include graphical user interface software that displays all configured lanes and the current traffic pa ttern using a graphical traffic representation.

713.2.2 8 Physical Properties

1. The Contractor shall provide an RPD unit consisting of an en closure of that conforms to the NEMA 250 Standard for type 4X enclosures. 2. The Contractor shall obtain the operating voltage (115 V AC) for the pre-assembled backplate directly from t he Traffic Signal Cabinet. 3. All external components of the RPD shall be ultraviolet-resi stant, corrosion-resistant, and protected from fungus growth and moisture deterioration. 4. The RPD shall be able to withstand a fall of five (5) ft wit hout compromising its functional and structural integrity. 5. The RPD shall include a connector that meets the MIL-C-26482 Specification. The Mil-C-26482 connector shall prov ide contacts for all data and p ower connections.

713.2.2 9 Radar Design

1. The RPD shall be designed with a matrix of radars. 2. The circuitry shall be void of any manual tuning elements th at could lead to human error and degraded performance over time. 3. The RPD antennas shall be designed on printed circuit boards . 4. The RPD shall transmit a signal with a bandwidth of at least 245 MHz. This bandwidth provides the greatest accuracy for distinguishing clo sely spaced vehicles and gives the highest possible resolution. 5. The RPD shall provide at least eight (8) RF channels so that multiple units can be Section 713: Detectors Page 852 mounted in the same vicinity without causing interference betwe en them. 6. The RPD shall have a self-te st that is used to verify correc t hardware functionality.

713.2.2 10 Operating Conditions

1. The RPD shall maintain accurate performance in all weather c onditions, including rain, freezing rain, snow, wind, dust, fog and changes in tempe rature and light, including direct light on sensor at dawn and dusk. 2. The RPD shall be capable of c ontinuous operation over an amb ient temperature range of -40°F to 165.2°F (-40°C to 74°C). 3. The RPD shall be capable of c ontinuous operation over a rela tive humidity range of five percent (5%) to 95% (non-condensing).

713.2.2 11 Warranty, Maintenance, and Support

1. The Contractor shall obtain and assign to the Department all manufacturers guarantees or warranties which are normally provided as customa ry trade practice for items and Materials incorporated into the Work. In the abs ence of a manufacturer's guarantee, the Contractor shall warrant that mec hanical and electrical Equipment and Material incorporated into the Work ar e free from any defects or imperfections in work manship and Material for a peri od of one (1) year after partial Acceptance of the Project. The Contractor shall be responsible for repairing any malfunction or defec t in any such Equipment or Ma terial, which develops during the one (1) year period. 2. The Contractor shall supply two (2) sets of installation gui des and user manuals for the Equipment incorporated in the Project, one (1) of which sha ll be submitted to the Project Manager with submittal of manufacturers shop drawings.

713.2.3 EVOD System

The Contractor shall provide a system that uses optical communi cation or GPS to identify the presence of designated priori ty vehicles and causes the Tra ffic Signal controller to advance or hold a desired Traffic Signal display selected from normally available phases. The Contractor shall provide an EVOD system with a matched set of components that identify the presence of (signal f rom) priority emergency vehic les and instruct the Traffic Signal controller to find and hold a des ired Traffic Signal display. The Contractor shall ensure that this communication is effectiv e to the optical detectors at or near the intersection over a line-of-sight path of at least 2,300 ft. The Contractor shall provide an EVOD system that operates on a first-come, first-served basis or on a selected priority basis and is designed to yield to other priority demands such as railroad crossings. The Contractor shall interface the EVOD system with existing Tr affic Signal controllers without compromising normal operation or existing safety provis ions. The Contractor shall provide an EVOD system that consists of an optical emitter, opt ical detectors, optical detector cable, and phase selectors. The Contractor shall ensure desired performance of the EVOD sys tem by providing matched system components, proven through integrated testing an d extensive functional experience. The Contractor shall provide matched system compon ents that offer compatibility Section 713: Detectors Page 853 with all types of Traffic Signal controllers, for example elect romechanical, or solid-state, and provide future system compatibility of priority control element s.

713.2.3 1 EVOD Optical Emitter Assembly

EVOD optical emitters shall be a light-weight, weather resistan t, user addressable, light- emitting device with internal regulated power supply. The Cont ractor shall ensure that the optical emitter assembly produces precisely timed, crystal-cont rolled optical energy pulses of high-intensity light from a single source, at a rate of from 14 .035 Hz or 9.639 Hz, depending on the emitter control switch used.

713.2.3 2 EVOD Optical Detector

The Contractor shall provide lightweight, weatherproof, adjusta ble, single or dual- directional EVOD optical detector assemblies. The Contractor s hall provide internal circuitry that transforms optical energy from the optical emitter assembl y into electrical signals for delivery to the phase selection Equipment, through optical dete ctor cable (up to 1,000 ft). It shall be programmable to detect addressable emitter. The Contractor shall provide a high-impact polycarbonate unit c onstructed with non- corrosive hardware, designed for simple mounting at, or near, a n intersection on mast arm, pedestal, pipe, or span wire, and operating over an air tempera ture range of from -22 °F to 140 °F. The Contractor shall ensure the unit is responsive to the optic al emitter at a distance of at least 1,800 ft and is capable of providing the necessary electr ical signal to the phase selector through up to 1,000 ft of optical detector cable.

713.2.3 3 EVOD Optical Detector Cable

The Contractor shall provide du rable EVOD optical detector cabl e with the necessary electrical characteristics to ca rry power to the optical detect or from the phase selector and to carry the optical detector signal to the phase selector. The Contractor shall provide three (3) conductors, AWG 20 (7 x 28) stranded and an individually tinned drain wire c able to provide signal integrit y and transient protection. The Contractor shall use copper cabl e conductors shielded with alum inized polyester. The Contractor shall overlap the shield wrapping 20% to ensure shie ld integrity following conduit and mast arm pulls. The Contractor shall ensure the cable deli vers the necessary quality signal from the optical detector to the phase selector over a n on-spliced distance of 1,000 ft and sufficient power to the optical detector over a non-spliced distance of 1,000 ft. The Contractor shall provide cable with an insulation rating of at least 600 V and a temperature rating of at least 176 °F. The Contractor shall provide color-coded cables as follows: 1. Orange for delivery of optical detector power (+); 2. Blue for optical detector powe r return (-) or optical detect or signal; 3. Yellow for optical detector signal; and 4. Bare for optical detector power return (-).

713.2.3 4 EVOD Phase Selector Assembly

Section 713: Detectors Page 854 The Contractor shall interface the EVOD phase selection assembl y between the optical detectors and the controller unit. The Contractor shall not co mpromise the existing controller unit’s fail-safe provision, and provide sufficient power for up to three (3) optical detectors per channel. The Contractor shall ensure the assembly provides suitable sens itivity to the optical detector signal via adjus table range settings. The Contractor shall provide a plug-in, two (2) or four (4)-cha nnel, dual-priority assembly device intended for installation directly into the input file o f control cabinets equipped with priority-phase selection software. The Contractor shall power the assembly from AC mains and ensur e the assembly contains an internal, regulated po wer supply to power optical d etectors. The Contractor shall ensure the assembly is capable of recogniz ing the following pulse rates as delivered by the optical detectors: 1. 9.639 Hz ± 0.119 Hz as Frequency I; and 2. 14.035 Hz ± 0.255 Hz as Frequency II. The Contractor shall provide an assembly that delivers signals to the controller to cause selection of the desired phase green display for the approachin g vehicle. The Contractor shall provide a test switch for each channel to deliver Frequency I or Frequency II signal pulse rates to verify proper function at bo th optical emitter flash rates, first-come, first-served operati on, and Frequency II override c apability. The Contractor shall provide a selectable call dropout time of five (5) s or ten (10) s, zero

713.2.3 5 EVOD Reliability

The Contractor shall ensure that Equipment supplied as part of the optical priority remote traffic control system intended for use in the controller cabin et meets the electrical and environmental Specifications of the NEMA standards. The Contractor shall ensure that all Equipment supplied as part of the priority control system intended for use in or on emergency vehicles operates pr operly in air temperatures of from -20 °F to 140 °F, in air with relative humidity of from fi ve (5) to 95%, and a vehicle battery voltage of from ten (10) V to 15 V.

713.2.4 Loop Vehicle Detector

The Contractor shall provide a self-contained, electronic sensi ng loop vehicle detector that registers the presence of a vehicle by recognizing inducta nce change in a loop of wire embedded in a Roadway. The Contractor shall rack-mount the detector in a Traffic Signa l controller cabinet. The Section 713: Detectors Page 855 Contractor shall provide two (2)-channel type detectors with in dependent channel controls. If specified in the Contract, include a Delay/extension time funct ion and/or count function for each channel. The Contractor shall provide all loop vehicle detectors in acco rdance with NEMA TS1, Part 15, NEMA TS2, Inductive Loop Detectors.

713.2.4 1 Loop Detector Wire

The Contractor shall use No. 14 AWG stranded copper wire cross- linked polyethylene (XHHW) insulation conforming to r equirements of IMSA Specificat ion No. 51-3 for loop detector wire installations in pavement saw cuts.

713.2.4 2 Loop Lead-in Cable

The Contractor shall connect the loop installed in the pavement to the loop detector unit installed in controller cabinet with No. 16 AWG copper, polyeth ylene insulated twisted pairs, shielded and enclosed within a polyethylene-jacket lead-in cabl e. The Contractor shall provide loop lead-in cable in accordance with IMSA Specification No. 50 -2.

713.2.4 3 Loop Detector Sealant

The Contractor shall use loop sealant as filler for loop saw cu ts, and to secure and protect the loop wire. The Contractor shall provide sealant of sufficient strength and hardness to withstand stress and abrasion from vehicular traffic while r emaining flexible enough to provide stress relief under thermal movement. The following are additional sealant properties: 1. Ability to bond to concrete and asphalt; 2. Rapid cure rate allowing pavement opening to traffic ½ h aft er installation; 3. Initial fluidity permitting installation in a narrow saw cut down to at least 40 °F; 4. Moisture insensitivity allowing application to damp pavement effectively; and 5. Resistance to vehicula r fluids and Road salt.

713.2.4 4 Ducted Loop Wire

The Contractor shall use ducted loop wire loosely encased in ¼ in outside diameter polyvinyl chloride (PVC) or polyethylene tube for insulation in pavement saw cuts or by directly overlaying with paving Material. The Contractor shall provide ducted loop wire in accordance with IMSA Specification No. 51-5, or use insulated PVC with a n ylon jacket (THHN) or polyethylene (XHHW) for the interior No. 14 AWG stranded conduc tor.

713.2.4 5 Hot-Type Applied Loop Detector Sealant

The Contractor shall use a hot-melt, rubberized asphalt compoun d sealant provided in “bricks” formulated specifica lly to be stiff, non-tracking, fle xible at low pavement temperatures, and suited for use as a sealant fo r traffic loop cuts, or as sp ecified by the user agency. The Contractor shall provide th in, free-flowing fluid sealant t hat pours easily, penetrates fine cuts, self-levels, and allo ws easy application at applicat ion temperatures. The Contractor shall melt sealant and apply to pavements in accordance with th e manufacturer’s recommendations, using either pressure-feed melter applicator u nits or pour pots. The Contractor shall ensure that hot-applied sealants meet or excee d the property requirements in Section 713: Detectors Page 856 Table 713.2.4.5:1, "Hot-Applied Loop Sealant Property Requireme nts," after curing. Table 713.2.4.5:1 Hot-Applied Loop Sealant Property Requirements Test Procedure Specification Penetration @ 77 °F, 3.53 oz., 5 s ASTM D 5329 35, maximum Softening Point ASTM D 36 180 °F, minimum Ductility, 77 °F ASTM D 113 6 inch, minimum Mandrel Bend 180 °F, 5s, 1.07 in diameter — Pass Pour temperature — 380 °F, Minimum Safe heating temperature — 380 °F–420 °F

713.2.4 6 Cold-Applied Loop Detector Sealant

The Contractor shall apply sealant by conventional cartridge gu n or bulk handling pump Equipment. The Contractor shall ensure that the uncured (wet) M a t e r i a l h a s a v i s c o s i t y o f approximately 20,000 cP at 77 °F using a Brookfield Viscometer, #6 spindle at 20 RPM, and nonvolatile content (solids) of from 75% to 85% by weight. The Contractor shall provide Material that cures at a rate such that it is dry to the touch within 24 h, while being driven on almost immediately after ins tallation. The Contractor shall provide non-shrink sealant that rem ains flexible at temperature s greater than or equal to -40 °F. The Contractor shall ensure that cold applied sealants meet or exceed the property requirements list in Table 713.2.4.6:1, “Cold Applied Loop Seal ant Property Requirements,” after curing. Table 713.2.4.6:1 Cold-Applied Loop Sealant Property Requirements Test Procedure Specification Hardness ASTM D 2240 65–85 Tensile strength ASTM D 412 500 psi, minimum Elongation ASTM D 412 400%, minimum Adhesion (peel strength) (Canvas to conc.) ASTM D 903 15 lb, minimum Arc resistance ASTM D 49 71 s, minimum Dielectric strength @ 50 Hz ASTM D 150 6.35, minimum

713.2.4 7 Requirements

The Contractor shall provide loop detectors that use digital de sign throughout, for threshold, time, and cycle calculations. The Contractor may us e the following techniques to determine a change in inductance: 1. Period measurement; 2. Time elapsed per cycle; 3. Frequency measurement; or Section 713: Detectors Page 857 4. Cycles counted in a set time interval. The Contractor shall ensure isolation of the channels with two (2)-channel construction to eliminate “cross talk” between adjacent loops. The Contractor shall provide period measurement detectors using al ternate scanning to accomplish th is isolation. The Contractor shall provide a detector with a fail-safe to cal l feature on each channel to provide a detect output, if open circuit loops occur. The Cont ractor shall provide for a minimum composite loop inductive operating range of from 50 μH to 1,000 μH and allow up to 1,000 ft of loop lead-in. The Contractor shall provide self-tu ning detectors with automatic tracking or detectors that require initial tuning with a minimu m automatic drift compensation tolerance of ± five percent (5%), after initial adjustment. Th e Contractor shall optically couple detector outputs. The Contractor shall provide a fail-safe (cl osed) output in case of power loss.

713.2.4 8 Testing

Before Project Manager Acceptance, the Contractor shall send th e loop vehicle detectors to the Traffic Services Signal Laboratory in Santa Fe for testi ng and approval. The Department will test the detectors concurrently with the contro ller testing in accordance with Section 714.3.2, “Testing.” The Department will inspect and test loop vehicle detectors as follows: 1. Visual inspection for comp liance with the Contract; 2. Sample tests in accordance with NEMA standards for the follo wing: 2.1. Sensitivity; 2.2. Hold time; 2.3. Long detection and recovery; 2.4. Adjacent lane rejection; and 2.5. Pulse mode re-phase. The Department will base Acceptance on the satisfactory perform ance of the loop detectors for the test period in accordance with Section 714.3. 2, “Testing.”

713.2.5 Operation

The Contractor shall provide digital switches on the front pane l or software for making operational selections or adjustments. The Contractor shall pr ovide a minimum selection of three (3) frequency ranges and three (3) sensitivity (change in inductance) ranges along with a presence or pulse output mode and a reset selector. The Contra ctor shall separate and repeat controls for each channel. The Contractor shall provide an LED output indicator on the fro nt of each channel.

713.2.6 Two (2)-Channel Detectors

The Contractor shall provide active power inputs on both channe ls of two (2)-channel detectors, to allow independent operation of either channel wit hout the remaining channel being connected. The Contractor shall ensure that connector te rminal assignments are in accordance with NEMA Standards, Part 15. The Contractor shall rack mount detectors.

713.2.7 Lightning and Transient Protection

The Contractor shall provide dete ctors that meet NEMA requireme nts for transient testing. The Contractor shall a ccomplish this using metal oxid e varistors for protection from voltage induced in loop lead-in c ables installed in the cabinet , and flash-over protection from internal circuit to ground.

713.2.8 Pedestrian Detectors

713.2.8 1 Push-Button Station

The Contractor shall provide cast aluminum push-button station housing of tamperproof construction. The Contractor shall ensure the assembly is weat herproof and constructed so there is no possibility of elect rical shock under any weather c onditions. The Contractor shall Shape the housing to provide a rigid inst allation that fits the curvature of the pole it attaches to. The Contractor shall pro vide a direct push-type actuator button, micro-switch type or approved equal in the housing body . The Contractor shall fit the housing cover snugly on the housi ng that contains the push-butt on sign. The Contractor shall provide porcelain enameled sheet steel or sheet aluminum pedestrian push-button signs of 0.36 inch minimum thickness. T he Contractor shall make the signs nine (9) inch × 12 inch. If using porcelain enameled steel signs, the Contractor shall p rovide each hole with a brass grommet. The Contract or shall round sign corners. The Contractor shall use black enamel on white enamel backgroun d to show instructions and arrows on the signs. The Contractor shall show the instruc tions in accordance with the Contract. The Contractor shall finish push-button housings with two (2) c oats of powder coat or best quality infrared oven baked paint as follows: 1. First Coat: Baked epon primer, zinc chromate, or equal; and 2. Second Coat: Flat black or when specified Federal yellow al kyd urea baked enamel matching Federal Standard 595 A Color Chip 33538.

713.2.8 2 Warranty, Maintenance, and Support for APS

1. The Contractor shall obtain and assign to the Department all manufacturers guarantees or warranties which are normally provided as customa ry trade practice for items and Materials incorporated into the Work. In the abs ence of a manufacturer's guarantee, the Contractor shall warrant that mec hanical and electrical equipment and Material incorporated into the work ar e free from any defects or imperfections in work manship and Material for a peri od of six (6) months after Acceptance by the Department. The Contractor shall be re sponsible for repairing any malfunction or defect in any such equipment or Ma terial, which develops during the six (6) month period. 2. The Contractor shall supply two (2) sets of installation gui des and user manuals for the Equipment incorporated into the Project, one (1) of which s hall be submitted to the Department with submittal of manufacturers shop drawings. 3. During the warranty period, technical support by toll-free t elephone shall be provided by the manufacturer.

713.3.1 Video Detection System

The Contractor shall install the Video Detection system per the manufacturer’s recommendations and provide assistance from the Supplier as des cribed below for a period of two (2) years after the items have been Accepted: 1. Have the Supplier of the Video Detection system supervise th e installation and testing of the video and computer Equipment. Have a factory re presentative from the Supplier set up, test, program, and adjust the system in th e field at each temporary signal location and t he final signal location. Have factory representatives conduct a one (1) Day training and programming session in conju nction with the setup and test for each signal loc ation, if specified in the Co ntract; 2. During the manufacturer warranty period, ensure that the Sup plier provides technical support by toll-free telephone; 3. During the manufacturer warranty period, ensure that certifi ed personnel from the Supplier are on site within two (2) Working Days, if the Depart ment requires; 4. Ongoing software support by the Supplier includes updates of each Central Video Processor (CVP) and the computer software; and 5. Have the Supplier maintain a program for technical support a nd software updates following expiration of the manufacturer warranty period.

713.3.2 Reserved

713.3.3 EVOD Optical Detector System

The Contractor shall install EVOD optical detector systems in a ccordance with the manufacturer’s recommendations. The Contractor shall not allow the Equipment manufacturer to modify the existing traffic controller unit beyond adding th e necessary hardware to the traffic controller cabinet.

713.3.3 1 System Training

The Contractor shall provide appropriate training and assistanc e to the Department’s personnel and emergency vehicle operators in troubleshooting, m aintenance, and system operation for the duration specified in the Contract. The Cont ractor shall submit the complete training program to the Department for approval, 15 Working Day s before scheduling the training. The Contractor shall include in the training program submission, working outlines of presentations and manuals, handout s, and other Materials to be distributed during the training.

713.3.4 Loop Detectors

The Contractor shall install loop detector consisting of two (2 ) distinct elem ents. First, the Contractor shall install the loop (inductive coil) in the pavem ent, at the location, and geometry specified in the Contract, incl uding a low-inductance lead-in c able back to the control cabinet. Second, the Contractor shall install the loop vehicle detector- sensing unit in the control cabinet, including wiring to out put the presence of a vehicle. The Department will not Accept loop detector (total system) installations until the installati on accurately detects the presence of vehicles in accordance with the Contract.

713.3.4 1 Loop Detectors Installation Requirements and Procedur es

The Contractor shall make saw cuts using an abrasive cutting wh eel concrete saw. The Contractor shall make saw cuts from 2¼ inch to 2½ inch deep and approximately 0.275 inch wide. The Contractor shall use a ⅜ inch wide slot to install d ucted loop wire. If the Contract requires new pavement or additional paving Mate rial overlay, the Contractor shall make the saw cut and wire installation at leas t below the last paving layer of ⅝ inch or greater thickness. The Department will not allow saw cuts in the final layer of surfacing. In the case of pavement overlay, the Contractor sha ll make a saw cut a minimum of two (2) inches below the final s urfacing elevation. The Contra ctor shall install piezoelectric detectors in accordance with the manufacturer’s recommendations , which may require saw cutting of the open-graded friction course (OGFC). If the Contract specifies heater-scarification pavement treatme nt, the Contractor shall make the saw cuts after completing this operation. The Contrac tor shall provide two (2) inch diameter holes, drilled at angle points to the same depth as th e saw cuts. The Department will allow 45° angle cuts made at corners instead of drilled holes. The Department will not allow sharp corners greater than 45° between overlapping saw cuts. A lso, the Contractor shall drill cut across concrete pavement expansion joints to allow wire sla ck. The Contractor shall overlap saw cuts by a sufficient length to provide a smooth bot tom, even-depth wire channel. If there is more than one (1) loop terminating at a pull box, t he Contractor shall provide each loop with a separate saw cut back to the box. The Contractor s hall make these saw cuts no closer than six (6) inches. Bef ore placement of the sealant an d wire, the Contractor shall clean the saw cut of debris and standing water by blowing out w ith compressed air. The Department will allow the pavement surface to be damp to the to uch. The Contractor shall ensure the inside of the saw cut is free of sharp protrusions f rom loose aggregate or uneven saw cuts.

713.3.4 1.2 Rigid Electrical Conduit Entrance

The Contractor shall provide a separate one (1) inch rigid elec trical conduit entrance at the pull box for each loop. The Contractor shall begin the rig id conduit at the end of the pavement saw cut and run under any curb and gutter, and Sidewal k. The Contractor shall leave slack in wire through th e conduit entrances, and seal the end of the conduit with a soft-setting butyl rubber or asphalt joint sealer. The Contrac tor shall fill the remainder of the hole with the appropriate Material and approved saw cut sealant .

713.3.4 1.3 Loop Wire Placement

The Contractor shall place a continuous run of loop wire in the saw cut and wind around the coil section the number of turns specified in the Contract, or directed by the Project Manager. The Contractor shall install no more than four (4) wi res or turns in a single saw cut. The Contractor shall leave wire run through drilled corners and joint crossings slack. The Contractor shall encapsulate the slack portion of wire with a s oft-setting butyl rubber or asphalt joint sealer. The Contractor shall install at the ducted loop wire during a paving operation by securely attaching the loop in the proper shape to the pavement surface and overlaying with the next paving layer(s) of two ( 2) inches or greater total thi ckness is allowable. The Contractor shall secure the loop before overlaying by placing t he ducted wire in a slot cut in the pavement, or by securing the corners using a method approve d by the Project Manager, then covering the wire by hand with a small amount of asphalt p aving Material. The Contractor shall not bend the ducted loop wire to less than a o ne (1) inch radius.

713.3.4 1.4 Sealant Application

Section 713: Detectors Page 861 The Contractor shall not place sealant, if the air temperature is below 40 °F or if precipitation is occurring or impending. The Contractor shall place sealant in accordance with the manufacturer's recommendations. The Contractor shall place sealant in saw cut using a special n ozzle. The Contractor shall fill the saw cut to within approximately ⅛ inch of the to p. The Contractor shall not allow spillover onto the pavement surface; immediately strike off exc ess Material.

713.3.4 1.5 Multiple-Loop Systems

If using a multiple-loop system (same channel), the Contractor shall wind adjacent loops with opposite rotations. The Contractor shall accomplish rotat ion reversal by reversing leads at the pull box. The Contractor shall mark the beginning of th e loop wire and the pull box before beginning the winding process to identify the direction of rotation. The Contractor shall connect multiple loops in series to the lead-in cable at the pu ll box or splice point.

713.3.5 Loop Lead-in Cable Installation

The Contractor shall run loop lead-in cable continuously from t he loop wire splice to the terminal in the control cabinet. The Department will not allow splices in the lead-in cable. The Contractor shall connect the drain (ground) wire in the lea d-in cable to earth ground at the cabinet end only. The Contractor shall neatly clip off the ground wire at the curbside pull box adjacent to the end of the outer jacket. The Contractor shall solder connections between the loop wire a nd the lead-in cable. The Contractor shall not use open flame torches for soldering. The Contractor shall make splices waterproof by stripping from ¼ inch to ½ inch of the in sulation, and inserting into a self- sealing epoxy-filled twist-on con nector in accordance with Sect ion 711.3.4.1, “Spring-Type Connector." The Contractor shall use of a two (2)-part sealant , DBY-3M #3570 connector sealant, or approved equal is allowable. The Contractor shall wrap #3570 connector splices with a high-q uality all-weather electrical recording, or approv ed self-bonding recording, by ov erlapping the wire insulation approximately one (1) inch and in layers equal to or greater th an 1½ times the thickness of the original wire insulation. The Contractor shall seal the outer j a c k e t o f t h e c a b l e i n a s i m i l a r manner, except overlap the recording on the outer jacket four ( 4) inches. If using ducted loop wire, the Contractor shall apply sealant a t the end of the tube portion and then wrap with recording to prevent water entry. The Contr actor shall suspend the “V” splices formed high in the pull box to prevent immersion in wat er.

713.3.6 Integrity Test Check

After completing loop installation in the Roadway, the Contract or shall check each loop with a megger, if required, to ensure the integrity of the inst allation. The Contractor shall ensure that the resistance of each loop is greater than 100 MΩ. If directed by the Project Manager, the Contractor shall check the completed loop detector system in accordance with

713.3.7 Push-Button Stations

The Contractor shall mount push-button stations on the side of Traffic Signal poles with the arrow sign indicating the dire ction of pedestrian movement. If an extension is required for ADA requirements, a maximum of one (1) ft is allowable.

713.3.7 1 Installation and Operational Requirements

713.3.7 1.1 Walk Indication and Pushbutton Information Message

When Pushbutton-Integrated APS serving separate crosswalks are installed on two (2) separate poles on a single street corner or other locations wit h pedestrian crosswalks separated by at least ten (10) ft at the same crossing, the Aud ible Walk Indication shall be a Rapid Tick. When Pushbutton-Integrated APS serving separate crosswalks are installed on the same pole, the Audible Walk Indicati on shall be a Speech Message. Where the Visual Pedestrian Signal is a fixed time signal (i.e ., does not require pedestrian activation), the Acce ssible Pedestrian Signal shall also be a fixed timed signal. The Audible and Vibrotactile Walk Indications shall be repeate d for the entire duration of the Walk Interval, except as provided below: 1. This paragraph applies only to a situation in which a pedest rian signal (i) is used to assist pedestrians crossing a minor street that intersects a ma jor street; (ii) stays in a rest-in-walk status; and (iii) only changes to “Don’t Walk” w hen a pedestrian pushes the button to cross the major street, or a vehicle activ ates the signal to cross the major street. In such situations, and where technology pro vided by the APS manufacturer provides the option, when the duration of the rest -in-walk status is longer than seven (7) seconds, t he audible walk indication will terminate after seven

713.3.7 1.2 Volume Settings

The Pushbutton Locator Tone and Walk Indication emitting from the Pushbutton Housing shall be audible, under varying conditions of ambient sound, fi ve (5) feet to ten (10) feet from the pushbutton, or to the building line of the nearest building , whichever is less. When the pushbutton is pressed and held for one (1) second or more durin g the flashing or steady “Don’t Walk” phase, the volume of the Walk Indicator and Locator Tone will be increased for a maximum of two (2) cycles. Under such circumstances, the volum e of the Locator Tone shall be increased during the Pedestrian Change Interval only. Volume shall be increased for one (1), or if available from th e manufacturer, two (2) Pedestrian Timing cycles following a button press of one (1) se cond or more.

713.3.7 1.3 Text Requirements

Raised characters, text, symbol s, pictorial symbol signs, and B raille where provided shall conform to the requirements of the Contract.

713.4 METHOD OF MEASUREMENT—Reserved

Pay Item Pay Unit CVP Each Video Cable Foot Video Camera Each Video Hardware System Each Radar Presence Detector (RPD) Each Optical Detector, ___Direction, ___Channel Each Optical Detector Cable Foot Optical Emitter Each Loop Detector Wire Foot Ducted Loop Detector Wire Foot Loop Lead-in Cable Foot Detector Saw Cut Foot Phase Selector Rack, ___Channel Each Phase Selector Module Each Accessible Pedestrian Signal Push Button Station Each The Department will pay for conduit for detector installations in accordance with Section 709, “Rigid Electrical Conduit.”

713.5.1 Work Included in Payment

The following Work and items will be considered as included in the payment for Radar Presence Detector (RPD) and will not be measured or paid for se parately: 1. RPD Sensor, Sensor Mount, Sensor Cable, splice box, preassem bled back plate and two (2) channel detector card for interface to Traffic Sign al controller; and 2. When the number of approaches has been established to create one (1) detection unit, no additional payment shall be made for integration. Section 714: Traffic Signal Controllers Page 864