Loading...
MA1006-CS110125 (5)Portable Traffic Signal Specification General Portable Traffic Signals (PTS) shall be trailer mounted units. Each unit shall be self contained and consist of two signal heads per trailer. One signal head shall be mounted on an over head mast arm capable of extending over the travel lane. The other signal shall be mounted on a vertical upright. Signal Trailer General:. Empty Weight: 1,610 lbs. per signal trailer not including batteries, controller parts, solar panels or lights Completed Weight: PTS trailer shall have a minimum weight of 2,900lbs. in the completed deployment ready form Overall Dimensions: 291”L x 85”W x 89”H Hitch: 2-5/16” ball coupler, adjustable, galvanized (3” pintle eye available) Safety Chains: (2) 5/16” with positive latch hooks Notes: Hitch and safety chains comply with SAEJ684 Running Gear: Axles: 3,500 lb Torflex Suspension w/EZ Lube spindles Brakes: Electric system Tires: Size: ST205/75R15 Ply: Load Range C Wheels: Size: 15” x 5” Bolt Circle: 5 on 5 1/2” Type: Black OEM Structural: Frame Rails: Mat’l: 3/16” formed and tubular steel frame Mast Support Post Mat’l: Tubular steel Mast Mat’l: Combined formed and tubular steel structure Boom Mat’l: Tubular steel structure with galvanized extension Fenders: Mat’l: Galvannealed, weld on style Battery Box Mat’l: Formed with positive hold open Control Box Mat’l: Formed with positive hold open Solar panel frames: Descrip: Removable and lockable, able to accommodate multiple size panels, designed to overlap for compact s h i p p i n g Solar panel frame brkts: Note: Include UHMW polyurethane linings for easier deployment Hardware: Note: 1/2” and under diameter are stainless steel Finish: Preparation: Iron Phosphate wash Paint: Primer: Epoxy Primer Top Coat: Acrylic Enamel, Horizon Safety Orange Electrical: Lighting & Reflectors: To Federal DOT Requirements Wire Harness: Type GPT jacketed harness w/ color coded wires and molded p l u g s Electrical Connection: 7-Prong Plug Rear Lights: To meet FDOT on all trailers, located in upper position on rear solar panel supports, removable style Accessories: Removable ‘pinned’ tongue (4) 7,000 lb stabilizer jacks with 2-1/2” square pin positioned telescoping galvanized drop leg with zinc plated 6” x 8” steel foot plate. Vertically installed on 84” front to rear dimension and 79” side to side dimension. Lifting ring to facilitate lifting and placing the PTS trailer as required. Signal Head The portable traffic signal (PTS) trailer shall be capable of accommodating a vertical upright and a horizontal mast arm. The overhead signal shall provide a minimum clearance of 17ft.-6in. measured from the bottom of the signal head to the road surface. Wind Load The trailer and all mounted equipment shall conform to the wind load requirements (90 mph minimum) as described in AASHTO Standard Specifications for Highway Signs, Luminaries and Traffic Signals 4th edition. Conformance to the AASHTO Standard Specification shall be verified by a reputable independent source. A certificate of compliance endorsed by a Registered Professional Engineer with the supporting Engineering Study shall be made available upon request. No additional ballast shall be used to meet the requirements of the AASHTO Standard Specification. Additional ballast includes but is not limited to, sand bags, concrete/cement blocks and steel, cast, or iron weights. Transport PTS trailers shall be manufactured to accommodate the option of transporting two signal trailers with one vehicle. The PTS trailer shall be equipped in such a manner as to provide legal transport on the public highway system. Each signal trailer shall be equipped with four stabilizing/leveling jacks, one on each corner of the trailer. Signal Heads / Display Requirements The PTS shall meet the physical display and operational requirements of conventional traffic signals as specified in Part IV of the Manual on Uniform Traffic Control Devices (MUTCD). Signal Heads shall be cast aluminum and have three 12 inch LED indications, conforming to ITE Specification “Vehicle Traffic Control Signal Heads” and NEMA Standards TS1 and TS2. Signal heads shall be equipped with visors which extend beyond the signal head a minimum of 10 inches. The signal heads shall have the ability to accommodate back plates and rotate horizontally 180º. The overhead signal shall have a minimum clearance height of 17 ft. measured from the bottom of the green indication to the road surface. The lower signal head shall be mounted to a vertical upright at a minimum height of 8 ft. measured from the bottom of the green indication to the road surface. Power Requirements Each PTS Trailer shall be equipped with batteries sufficient to operate the signal for a minimum of 30 days @ 72º without charging. The charging system shall include 440 watts (minimum) of solar collection capability and an onboard battery charger capable of being used with a 120V AC power source. The system shall also include an onboard monitoring system capable of regulating and providing a visual display of the battery voltage and solar input. Lift System Each PTS Trailer shall be equipped with a hydraulic lift system sufficient to raise and lower the vertical upright and horizontal mast arm to and from the operating position. The Lift System shall not utilize cables in any manner to raise or lower the vertical upright and horizontal mast arm. Operational Requirements Each PTS shall be equipped with an operating system having the following capabilities: All PTS trailers shall be equipped with a conflict monitoring system conforming to NEMA performance standards, a controller capable of operating the PTS system in a fixed time, traffic actuated or manual control mode. Fixed time mode operation option must include the ability to provide a minimum of five automatic signal timing changes within a 24-hour period. The operating system shall have the ability to control a minimum of 7 traffic phases. Programmable green times from 1 second to 999 seconds and red times from 1 second to 999 seconds in 1 second increments shall be a required. The ability to facilitate minimum / maximum green time programming in the traffic actuation mode in a manner that will extend the green times in predetermined programmable segments as required. The operating system shall have the capability of facilitating standby modes of red, red flash and yellow flash mode. The operating system shall be capable of facilitating traffic actuation with true presence capability. The operating system shall have the capability of interfacing with a remote monitoring system capable of reporting signal location, battery voltage and system default. The monitoring system shall include a password protected web site providing battery voltage and default history. The operating system shall have an integrated mechanism capable of recording system malfunction including date and time of system failure. This information shall be available in a printable format. The operating system shall be capable of accommodating a pre-emption system with optical activation which provides a priority green phase in the direction of appropriately equipped approaching emergency vehicles. The operating system shall have the capability to allow the PTS to be connected to and controlled by a standard NEMA controller. The operating system shall be equipped with diagnostic capabilities in the event of a system default. The system shall have the capability of identifying the default in a manner that will expedite the return to full operational mode. Actuation Requirements The PTS systems shall be available with traffic actuation capabilities. Acceptable traffic actuation systems include microwave motion sensors, video detection and in pavement loops. Acceptable PTS systems shall have the capability of being operated with both a motion and true presence actuation system. Communication Requirements PTS systems operated in the fixed time mode may be operated independently free of hardwire or radio communication. However the PTS must conform to the default requirements. PTS systems operated in the actuation or manual mode shall communicate via hardwire connection or wireless radio link communication. If the hardwire communication is utilized the communication cable shall be deployed in a manner that will not intrude in the direct work area of the project or obstruct vehicular and pedestrian traffic. If the radio link communication option is utilized clear line of sight must be maintained between PTS units and the radio system shall conform to the applicable Federal Communication Commission requirements and all applicable state and local requirements. Default Requirements PTS systems shall have the capability of reverting to a red, red flash or yellow flash mode upon system default. The default setting shall be red flash unless otherwise stated in the project specifications or dictated by the project engineer. Upon default the PTS system shall immediately contact a minimum of three responsible individuals via the remote monitoring system described in the Operational Requirement section. The PTS system repairs shall be the responsibility of the contactor and shall be rendered in a manner that will return to PTS to full operation condition in the most expeditious manner. Basis of Payment This work shall be paid for at the contact price unless otherwise specified in the project specifications.