957ADVANCED TRAFFIC SIGNAL TECHNOLOGY

957.1DESCRIPTION—This work is the furnishing and installation of advanced traffic signal technology for

the purpose of improving traffic operations and enabling communication between vehicles and infrastructure.

957.2MATERIAL—

• Traffic Signals-General. Section 950.2.

• Certification. Section 106.03(b)3.

• Provide a five-year technical support, hardware, and software warranty as applicable to the installed system.

• Include a five-year repair or replace guarantee including labor on defective hardware at no additional cost to the Department or traffic signal owner.

• Include five years of technical support available 24 -hour, 365 -day, and five years of free software updates.

• Maintain an ongoing program of technical support for the Advanced Traffic Signal Technology.

• Provide on-site technical support services by telephone or personnel sent to the installation site upon a service request.

• Maintain an adequate inventory of parts to support maintenance and repair of the Advanced Traffic Signal Technology.

• Replacement parts must be available for delivery within 30 days of an order.

• Guarantee support and replacement parts for up to 10 years for the Advanced Traffic Signal Technology.

• Provide replacement parts at no additional cost to the Department when the system is under the technical, hardware, and software support period.

The five-year warranty commences at the later of the two da tes; the hardware is energized or the date of software installation/Department and Municipality training.

installed at all intersections within the system. The Adaptive Signal System must have a fallback state that allows coordination using a common cycle length for all intersections in the system. The Adaptive Signal System must have a fallback state that allows individual intersections to operate in a vehicle -actuated, isolated mode if failures of the adaptive software or hardware, detectors, or communication occur. The Adaptive Signal System must be capable to optimize no less than every five minutes and provide updates to the adaptive software at a minimum of every four cycles to monitor performance and track the changes made to the splits, offsets, cycle lengths, and phasing sequences. The Adaptive Signal System software must be capable of remote monitoring and configuration via a web interface locally and over an Ethernet network on an authorized computer and be password protected. The Adaptive Signal System must be connected to the Commonwealth Network to allow PennDOT to monitor

the operation of the system to ensure the operational goals are met. The Adaptive Signal System must allow access by PennDOT and all parties authorized by the District Traffic Engineer. The Adaptive SignalS ystem must collect and store accessible real-time traffic data such as vehicle counts, stop delay and queue information per lane for a minimum of 4-weeks or as indicated. Real-time and historical statistical information must be available in graphical or tabular form or both via a web browser. This data must be available to all parties authorized by the District Traffic Engineer. If a detector, communications, or adaptive hardware or software failure occurs, the Adaptive Signal System must immediately trigger an alarm and at a minimum automatically send alphanumeric messages (short messaging service (SMS)/ text messaging) to cellular telephones and email addresses to the specified parties as directed by the District Traffic Engineer. If detection failure occurs, the Adaptive Signal System must either revert to time of day , utilize other system detectors, or vehicle recall settings or use historic system data from a similar time period to account for the approach or movement demand or utilize adjacent or reliable downstream detection to account for vehicular demand. The Adaptive Signal System must not prevent access to the local signal controller database, monitoring or reporting functions by any installed signal management system. The Adaptive Signal System must have the ability to be operated and monitored from a TMC if applicable. The Adaptive Signal System must function with these minimum operation requirements:

• The Adaptive Signal system must be capable of real -time corridor optimization, including dynamic adjustment of cycle length or timing pattern selection and coordination offsets with minimal transition period, the lesser of four cycles or five minutes.

• The Adaptive Signal System must handle real time incidents and traffic shifts by modifying the splits and offsets of the traffic pattern to adapt to increases and decreases in traffic flows on the facility it is managing. The Adaptive Signal System must detect additional traffic and provide additional green time and adjust offsets as needed.

• Selection of timing pattern, cycle length, offset, and split calculation must be based on achieving the objective of the adaptive system and be based on the detection evaluation of queues, wait times, and/or vehicle data.

• All timing pattern, cycle length, offset, and split thresholds must be authorized by the District Traffic Engineer.

• Provide an Adaptive Signal System that can function in an actuated -coordinated mode or adaptive mode selectable by time of day and day of week.

• If pedestrian actuation and detection is applicable, the system must accommodate pedestrian actuations.

• If preemption is applicable, the system must allow all preemption phases to override the system, operate according to the approved preemption sequencing without impedance from the system, and resume adaptive operation upon completion of the preemption phases with minimal transition, lesser of four cycles of five minutes.

• If queue preemption is applicable, the system must accommodate queue preemption.

• If railroad or transit preemption is applicable, the system must accommodate railroad or transit preemption.

• If priority is applicable, the system must allow all priority phases to override the system, operate according to the approved priority sequencing without impedance from the system, and resume adaptive operation upon completion of the priority with minimal transition, less than two cycles.

• The system must be able to reservice side street phases while operating in its coordinated phase.

• When the system has a detection failure, it must be capable of utilizing optimized signal splits based on historical split information or use other capable system detectors to maintain adaptive operations.

Provide all hardware necessary at each intersection for the installation of the Hardware A daptive Traffic Signal System including the following:

• Adaptive Traffic Signal Processor.

• Equipment.

• Spare equipment.

• Web-based/adaptive system application/adaptive signal system interface and setup (if applicable).

1.a. Adaptive Traffic Signal Processor.

• The system must provide equipment as necessary to communicate between the detection system(s) and the traffic adaptive components of the system.

• The system must automatically send all necessary information to processors at neighboring intersections to optimize the phasing sequence, duration, and initiation of movements along the corridor.

• The system must be capable of passing all vehicle detection inputs through to the controller to allow the intersection to operate without adaptive control by manual command, time of day, or if an adaptive processor failure occurs.

• When the controller loses communication with the processor, the controller must default to using existing time -of-day timings in conjunction with the vehicle detectors. To accomplish this, all vehicle detection must be passed through to the controller if adaptive processor failure occurs or a need to disable adaptive operation in the future. Do not operate the system in “free mode” due to a loss of communication between the controller and the processor unless directed.

• The system must have a “free mode” contact closure pin wired in the cabinet so if communication is lost between the hardware adaptive system and the controller, the intersection will revert to a previous time of day plan and generate an alarm , SMS text message or email, to inform TMC/system operators.

1.b. Equipment.

• Provide a minimum 10/100 plug-and-play Ethernet connection with static IP.

• For systems that connect detection into the adaptive signal system processors, include a lightning arrestor and fuse block to protect the power leads to the vehicle detectors.

• Allow power to be remotely cycled to the vehicle detectors.

• Provide one 7-inch monitor and integrated Universal Serial Bus (USB) keyboard/mouse for the entire system. The keyboard must have key spacing center-to-center of 0.75 inches with a minimum 84 keys. The monitor and keyboard/mouse must allow full monitoring and configuration of the adaptive system at each controller cabinet. The monitor must have a minimum resolution of 1024 x 768. Upon final configuration of the adaptive system, place the monitor and keyboard/mouse in the controller cabinet at an intersection directed by the District Traffic Engineer.

• Provide a minimum 2 GB re-imaging flash drive for each intersection containing all the programming details at each intersection. Each flash drive is to be labeled and remain in the cabinet.

1.c. Spare Equipment.

• Provide the number of spare systems as indicated. Each spare system must include one processor, four vehicle detectors that match the detection system installed under the project , and one equipment panel if required. If no detection system is installed under the project, spare detection is not required. Deliver the spare system to the locations directed by the District Traffic Engineer.

Provide all necessary components for the installation of the Software Adaptive Traffic Signal System including the following:

• Controller setup/programming/keys at each intersection

• Software license/setup by system or intersection

• Central System if applicable or licenses that connect and configure with already established Department Central System agreements.

• Web-based/adaptive system application/adaptive signal system interface and setup

• Off-site computer/keyboard/monitor and setup with the adaptive signal system manufacture r’s minimum system requirements if applicable as indicated.

If a minor communication failure or detection failure occurs, the Software Adaptive Signal System must utilize comparable historic data to develop splits, offsets, and cycle lengths or use other capable system detectors to maintain adaptive operations. The Adaptive Signal System must immediately trigger an alarm and send a message, SMS/text message or email, to the specified parties as specified in Section 957.2(b). If a major communication or system failure occurs, the Software Adaptive Signal System must revert to time of day timing plans. The Adaptive Signal System must immediately trigger an alarm and send a message, SMS text message or email, to the specified parties as specified in Section 957.2(b).

with a vehicle detection system that meets and as specified in Sections 910.2, 950.2, 954.2, 956.2, and as follows: Govern t he detection warranty as specified in Section 950. Warranty requirements as specified in Section 957..2(b) do not apply for Section 957.2(c)3. The detection system must be 100% compatible with the Adaptive Signal System installed and have the following functional requirements:

• Sense the presence or passage of vehicles by lane. This can be accomplished using one camera/sensor or multiple cameras/sensors.

• Detect at minimum the detection zones as indicated.

• Built-in external RJ-45 port and power connector.

• If video detection is used, Video output must be H.264, MJPEG, or MPEG-4.

• Minimum video resolution of 720 x 576 streaming on any modern web browser (HTTP).

• Equip each intersection with at least one camera capable of providing video imagery of the entire intersection that is streamed remotely. The video must encompass all approaches at the intersection and provide the user with real-time traffic observations. This camera may double as a vehicle detection

camera. Video output in h.264, MJPEG, or MPEG -4. Minimum video resolution of 720 x 576 streaming on HTTP.

• Detection sensor must be in detector mode before implementing the adaptive system.

The mounting hardware must include all clamps, wiring harnesses, and remaining hardware necessary to mount and operate the vehicle detection system according to the manufacturer’s recommendations. Specific mounting hardware is dependent on the vehicle detection system selected for this project and be compatible with both strain pole/span wire and mast arm signal supports. If recommended by the manufacturer, install luminaire arms on strain pole signal supports to obtain proper detector placement and visibility. Luminaire arms, if determined necessary, must be incidental to the vehicle detection system and considered part of the mounting hardware.

957.3CONSTRUCTION—

As specified in Section 950.3 and as follows:

Request IP addresses for all IP-addressable components of the adaptive system according to the Traffic Signal Remote Communication Policy. Before installation, provide catalog cuts, proof of adaptive system concept detailing the satisfaction of each core functional requirement, and shop testing documentation to the District Traffic Unit for approval. After installation, configure the Adaptive Signal System according to the core functional requirements and for optimal operation of the network considering the objectives as indicated. Traffic flow and anomalous traffic conditions are to be programmed into the Adaptive Signal System . All phase sequencing must be verified by the municipality and the District Traffic Engineer before final approval. Before the initial turn-on, verify with the Representative that all systems are working properly. Notify the District Press Office two weeks in advance of the initial system turn-on. The signal must operate with uninterrupted existing operations including time of day plans and detection during non-working times. Refer to temporary traffic control plans or existing permit plans for operations of existing detection system. Use proposed detection to provide uninterrupted service if existing detection is disabled. Any extended duration of the interruption service outside of working hours must be approved by the District Traffic Engineer before interruption of service.

engineers, and municipal maintenance providers on the setup, operation, and maintenance of the Adaptive Signal System. Provide training for the number of days indicated. Include in training, the following topics:

• Accessing the adaptive signal system remotely to the adaptive signal system through the web interface locally or over an Ethernet network on an authorized computer.

• Accessing historic data.

• Testing system failures and identifying problems and applicable troubleshooting techniques .

• Adjusting and monitoring the adaptive signal system settings.

• Reporting and analyzing.

Label all equipment based on the provided IP addresses and installed. Install the Adaptive Signal System in the controller assembly or auxiliary cabinet according to the manufacturer's recommendations and as indicated.

If there is applicable hardware, there must be a five-year warranty, as specified in Section 957.3(a).1. Install all applicable components of the Software Adaptive Signal System to be fully operational according to the Adaptive Signal System’s manufacturer requirements. If applicable , include in the installation modifying the controller setup and/or programming and/or installing adaptive keys at each intersection, establishing the Central System and configuring the adaptive signal system into the Central System , obtaining and activating the software license for the system or intersections, setup the web-based/adaptive system application/adaptive system interface, and set up the off-site computer/keyboard/monitor, setup with the adaptive signal system manufacturer’s minimum system requirements, and any additional setup requirements.

956.3, and as follows: Install and mount the vehicle detection system according to the manufacturer’s recommendations to provide minimum area of detection and operation as indicated without detecting conflicting movements. Secure detectors using appropriate mounting brackets according to manufacturer’s recommendations. Connect the Ethernet cable and power cable according to the manufacturer's recommendations from each vehicle detector back to the controller assembly. Provide repeaters and enclosures if vehicle detectors are over 300 feet from the cabinet. Provide field validation that the detector equipment is properly working. All vehicle detection must be passed through to the controller if adaptive processor failure occurs or a need to disable adaptive operation in the future. Do not operate the system in “free mode” due to a loss of communication between the controller and the processor unless directed. Provide a copy of any necessary software to the Department, municipality, municipal consultant engineers, and municipal maintenance upon request.

957.4MEASUREMENT AND PAYMENT—

The price includes all required hardware and configuration for a complete and functional system. Fifty percent of the contract price will be paid upon delivery of equipment. Thirty-five percent will be paid when all the equipment has been installed, configured, and is a fully functional system. Fifteen percent will be paid upon successful completion of the 30-day testing requirements. All applicable training, 5-year technical, hardware, and software warranty, and spare hardware for all intersections in the adaptive system is included the system cost.

Seventy-five percent of the contract price will be paid upon setup of software and installation of any hardware. Twenty-five percent will be paid upon successful completion of the 30-day testing requirements. All applicable training, 5 -year technical, hardware, and software warranty, and software/license fee for all intersections in the adaptive system is included the system cost.

The price includes controller interface/processor, mounting brackets, conduit, trenching, boring, junction boxes, splicing, luminaire arms, banding, cabling, setting up detection zones, software, and field adjustments for a complete installation at one intersection. Exposed or Buried Conduit, Trenching, Boring, Junction Boxes, Splicing, Mounting Hardware, Ethernet Cable are incidental and must be provided with the vehicle detection system as indicated and according to the manufacturer’s recommendations.