Intelligent Transportation Systems
ITS Interim Guidelines
As required by CAN 073, all projects must comply with the Intelligent Transportation Systems (ITS) Interim Guidelines provided under this web site. These guidelines are also applicable to all Permit Applicants and Maintenance work when an existing ITS facility is impacted by the proposed construction.
In addition to the New Jersey Statewide ITS Architecture (pdf 3.5m) the following standards are to be used for the deployment of ITS:
An ITS section for both the Design Manual and Construction Manual is still under development, and therefore the following instructions must be used to supplement the above standards.
General Scope/ConformanceAll ITS deployments, regardless of funding source, must be in conformance with the ITS Architecture and Systems Engineering requirements. In coordination with the project manager, the designer must reach out to the respective Traffic Operations Center (TOC) to document the purpose and need for ITS facilities, and also must reach out to Regional ITS Maintenance Management personnel of MSE to document how to address existing ITS. For the majority of standard ITS deployments a programmatic conformance process has been established and a Systems Engineering Review Form (SERF) must be completed. Refer to the SERF-Programmatic Instructions (pdf 28k) and SERF-Programmatic Template (rtf 129k). Any ITS deployment that is not covered as programmatic will require the designer to develop a Concept of Operations Report, including coordination with impacted stakeholders to address the seven sections under the SERF. The SERF, including a detailed Concept of Operations Report if required, should be approved and then referenced accordingly in the Concept Development Report.
A general location and type of each field device may also be provided or recommended by the Traffic Operations Center (TOC) during scoping. Based on this, and information from the SERF, the designer will prepare preliminary device location sketches for TOC review and approval in coordination with Regional ITS Maintenance Management personnel. Regardless of TOC approval, it is the designer’s responsibility to recommend and locate the device at a location that meets the need and is safe and cost-effective to deploy and maintain.
It is required that the designer conduct communication studies into the available modes of communication for ITS Devices. This can include Broadband, wireless, and preferably connecting into existing fiber networks (POTS lines are no longer acceptable). In general, communication links should be established for all devices as IP addressable, and any networks be established as Ethernet. Unless a written direction is provided to the designer for not upgrading the existing point to point devices to an ip addressable Ethernet network, it is the designer’s responsibility to include all point to point device communication for such upgrades if they fall within the project limits or if any work is proposed on a device that is beyond the project limits. Network designs will require additional coordination through NJDOT IT and NJOIT and when using NJTA's DWDM/CWDM network additional coordination through NJTA will be required. A Communication Report is to be submitted with the recommendations for all devices with a benefit to cost analysis that also addresses maintenance and operational costs/impacts. Include written confirmation from any utility service provider for those recommendations specified. This report should be submitted and approved during Concept Development.
It is required that the designer not only design within the limits of the construction project given the scope, but also take into account the integration into the overall network. This includes existing projects in design and construction phases that impact the current project, hardware and software platform requirements, procurement limitations, available communication ports of equipment installed in adjacent projects, operations’ end user requirements, LAN/WAN requirements, meetings and approvals with other agencies and/or departments.
ITS deployment should be scheduled as the first order of construction in a project when possible to allow the ITS facilities to be used in traffic mitigation during the remaining construction. The designer is to provide provisions to have ITS installations operational as soon as the above ground work is completed. This can include temporary communication and/or power measures to be activated immediately upon construction of an ITS device until the permanent measures are completed. The project’s Traffic Staging/Control Plans should reflect these provisions in addition to any requirements in Division 700.
In addition to expediting permanent ITS facilities and when no permanent ITS facilities are part of the project, temporary ITS devices may be required for traffic mitigation. This includes temporary speed monitoring systems, Real Time Work Zone Traffic System (RTWZTS), Portable VMS with Remote Communication and Portable Trailer Mounted CCTV Camera Assembly. Recommendations for these should be part of the traffic mitigation scoping and design developed in coordination with Traffic Operations and Regional ITS Maintenance Management personnel. Temporary ITS traffic control items are to be incorporated into Subsection 159 of the Specifications.
For TRANSMIT type Travel Time Systems (TTS Detector Type A) and Bluetooth sensor type Travel Time Systems (TTS Detector Type C), designer should coordinate with TRANSCOM for guidance on locations and integration requirements.
For projects not approved through the Division of Project Development process, the requirements includes submission of the Communications Report and SERF for approval prior to initiating final design, with a detailed Concept of Operations report for any ITS work not covered under the programmatic standards as defined in the SERF-Programmatic Instructions (pdf 28k) and Stewardship Agreement.
General Design and PlansThe ITS Location Plan shall show proposed and existing ITS facilities, including fiber optic lines with the Route and mile post listed at each device.
The controller cabinets for ITS device equipment and all meter cabinets are to be located away from the low points in the profile of the highway. If they have to be installed near a low point then provide skirts on the foundation and a concrete pad in front of the door if already not shown in the standard detail.
For ITS devices proposed in an area close to a slope, show the top and toe of slope lines in the plans to clearly indicate that the proposed device is not located on the slope.
For proposed fiber optic underground conduit installation, the preferred choice is ITS Conduit Type A - which has three (3) FLEXIBLE NONMETALLIC CONDUITS. When going through and along existing bridge structures, under ramps and traversing under the highway (lateral), a protective outer sleeve is to be provided for the inner ducts. When a project includes construction of a new bridge structure or a new superstructure, include two 2" RMC within the bridge parapet for ITS inner ducts. Provide for smooth transition of the conduit ends from parapet to ground without sharp bends. For short termination cable longitudinal underground runs (less than 500'), single RNMC may be used with a tracer wire installed. Ensure drainage is addressed, especially at bridge crossings and junction boxes.
ITS Junction Box Type A shall be installed off the paved surface approximately half a mile apart and at either end of an over pass. Adjust the spacing of the junction boxes such that there is one junction box available at all major interchanges/intersections and also at high points on major vertical curves for connecting future ITS devices. In the vicinity of intersections, ITS Junction Box Type B shall be used to allow for future widening. ITS Junction Box Type C shall be used for all conduits carrying electrical conductors for ITS facilities. ITS Junction Box Type D shall be used when both fiber optic cable and electrical conductors are installed in the conduits in the same trench that requires separation in the junction box. When two trunk lines meet, and a Hub is not proposed, a Fiber Cross Connect Cabinet is to be provided. Communication Hubs will usually only be required for trunk line networks that extend over 20 miles.
The full proposed communication path to the respective operation center is to be shown in a System Block Diagram. Each project using fiber for communication must include a Fiber Assignment Diagram and a System Block diagram regardless of the number of devices to be installed and even if only connections to existing facilities are proposed. When installing new fiber or maintaining existing fiber within the project limits, all existing ITS devices that are not connected to fiber or are communicating point to point on fiber using modems shall be connected to fiber using ethernet switches to the assigned pair of fibers on the trunk/distribution cable and must be shown on the Fiber Assignment Diagram with the corresponding mileposts. This will require Controller Modification pay item for each existing site and splicing details shall be shown on this diagram. The system block diagrams are to be prepared in such a manner that the contractors can use the same drawings to submit as working drawings by simply adding a list of equipment table and their stamp.
Fiber Optic Cable Type A thru F is described under the material specifications of Fiber Optic Cable available from NJDOT Bureau of MSE. All cables are to have six fiber bundles. Unless pre-approved only one Type A (48 fiber) cable is required for the length of the project with Type F to be used for termination cables. For termination of seven or more fibers, use cable type E or add an additional type F cable as required. When preparing Fiber Assignment Diagrams the green bundle of cable Type A shall be used or reserved for long haul, Center-to-Center, and hub-to-hub without any termination cables spliced to it. The blue bundle is designated for CSS, orange bundle for DMS, white bundle for TTS, and brown bundle for CTSS. The white fiber of the black bundle is to be used for data collection and trouble shooting. The slate bundle is reserved for shared fiber usage with other agencies (OIT, NJTA) and for WIM, TVS and RWIS when requested. The red bundle is to remain a dark bundle for future assignment. For any other devices proposed to communicate using fiber network, follow the project specific directions provided by Bureau of MSE. The devices communicating through each bundle are to be daisy chained using four fibers and an Ethernet switch in the controller cabinet. When installing a new device in an existing network, this layout is to be used picking up all existing devices within the project limits on the same proposed chain. This may require modification of the controller cabinet of the existing device and re-splicing of the termination cable. If adding devices to existing fiber network that has a different type/size cable, then contact NJDOT Bureau of MSE for fiber bundle assignment.
Number of Fiber Optic Cable splices are not to be measured as the splicing cost is included in the appropriate cable item. Where the new fiber optic cable is required to be spliced with an existing cable, show the proposed splice location on the plan with a construction flag at the JB where this splice is located and provide a reference to the Fiber Assignment Diagram where the details of this splice is shown. In order to provide for future splicing, a slack of 30 feet (60 feet total) is required in the Junction Box for cable entering the junction box from each direction.
Fiber Optic Cables are not to be installed in the same conduit with electrical conductors without prior written approvals from NJDOT Electrical Maintenance and NJDOT Bureau of MSE. If joint use is approved, the designer must still evaluate whether ITS Junction Box Type D can be provided as the preferred option or provide for dividers.
If there is a modification at TOC(s), it shall be shown in the existing TOC block diagram that is available from the Bureau of MSE in bold and a copy of it shall be returned back to Regional ITS Maintenance Management and the Bureau of MSE within 10 days reserving any spare ports on the existing equipment that are planned to be used. This modification work at TOC is paid under the pay item “Control Center System, (name of TOC or HUB). Two weeks prior to the PS&E submission, request a current copy of this TOC block diagram for inclusion in the submission. If proposing any changes to the previous submission, send the revised copy back to Regional ITS Maintenance Management and the Bureau of MSE for approval and use in future projects. Work at the TOC that is separate from the field devices must be clearly defined in the plans and Special Provisions. The designer must confirm with the Regional ITS Maintenance Management on the availability of space and requirements at the existing TOC or HUB to address any proposed ITS facilities.
Note: All DMS and TTS are to be integrated in to current operating systems at TOCN, TOCS & STMC. (Check with MSE during FDS). For integrating all TTS in to existing operating system, contact TRANSCOM, Regional ITS Maintenance Management and Bureau of MSE during FDS. All CSS statewide are to be integrated into existing camera operating system. (Check with Regional ITS Maintenance Management and MSE during FDS). Standard Specifications provide general provisions on this; designer to address any specifics unique to a project. Contact NJDOT Bureau of MSE for other management system integration requirements.
Electrical requirements for ITS devices including Utility Contact information are to be clearly specified in the contract plans and/or Special Provisions with service confirmation numbers to facilitate the Contractor obtaining the proper services. Documentation is to be provided on Utility Letterhead that the required service on a per location basis is available for use by the contractor when they apply for service. This also applies for any communication services that are specified through a service provider. Copies of these are to be provided to Bureau of MSE and the assigned Resident Engineer with the pole number and milepost location.
When Cable or DSL modem is to be installed in a cabinet for field devices, ensure that the Special Provisions specify a mechanical timer to be installed to reset the modems by turning off/on twice a day at 10 AM and 10 PM.
When broadband wireless service is required for communication of any device, ensure that a secured private IP address is specified to be established by the Contractor in coordination with OIT through RE.
Ensure any revisions and additions to the Electrical/ITS Standard Details, ITS Testing Forms, ITS Material Specifications, and the As-Built Inventory Report are addressed for specifics of the project. The FDS must include an updated SERF - FDS (rtf 42k).
Estimate/ScheduleWith each design submission, include separate ITS construction cost estimate and ITS construction schedule.
ConstructionUpon completion of the FDS, a determination must be made on the requirement for consultant support ITS inspectors through either the overall CE inspection consultants or through the existing on-call ITS inspection contract under the Bureau of MSE.
A separate post pre-con meeting for ITS will be scheduled by the RE with the respective Traffic Operations office, Regional ITS Maintenance Management, Bureau of MSE, OIT, designer, ITS inspector and the Contractor to coordinate impacts to existing and proposed work.
Required working drawings of the complete system for each pay item must be submitted to the ITS designer for review and approval. Use the System Block Diagrams included in the set of construction plans as working drawings by inserting the required equipment table and all necessary stamps. Structural items, such as standards, should be submitted as separate working drawings with the respective reference to the overall ITS system of which they are part. Sample ITS Working Drawings are available under Contractor Submittals and Forms. Underground items for standard conduit, standard junction boxes, and wiring from Section 701 can be submitted through the Material Questionnaire/DC-2891 process with approved EE #’s; MSE Engineering will require a copy of these. For any material that does not have an EE # assigned, sufficient information must be submitted for the designer to verify that the materials meet the requirements of the material specifications and the project requirements. Approved ITS materials from the QPL can be submitted through the Material Questionnaire/DC-2891 process with approved ITS #’s. Approval under a previous project does not mean automatic approval for subsequent projects. Working drawing submissions for the operational items of the systems should reference any related underground and structural item approvals when submitting separately. Material Questionnaire submittals per Section 106 will no longer be required for all ITS materials covered under approved working drawings. Designers must process through the Engineering Documents Unit for further NJDOT review and approvals.
Working drawings submissions are not for submitting proposed revisions to the contract. RFI’s must be submitted to the RE for any issues with the contract documents. If required, revisions will be issued by Change of Plan or Change Order, and then working drawings must be submitted in conformance with those revisions.
Relocating and/or modifying ITS devices during construction must be approved by the RE, Regional ITS Maintenance Management and Traffic Operations. Other than minor adjustments for field conditions that can be addressed through the as-builts, any other changes will require coordination through the designer to develop a COP that must also be approved through the Bureau of MSE.
A tracer wire is required to locate underground fiber optic cable conduits. When single conduit is used for fiber optic cable, ensure that a tracer wire is installed in the conduit. Where there is more than one conduit in the same trench, install a tracer wire in one conduit. The tracer wire shall be terminated inside the cabinet where the conduit is installed. This includes those locations where RMC is used for fiber optic cable.
A total slack of 60 feet (30 feet from each conduit entry) is required for the fiber optic cable at each Junction Box Type A, B and D for future splices.
For Substantial Completion to be met, the complete submission of related documents including ITS Testing Forms, red-lined as-built drawings, As-Built Inventory Report, and warranties (2 years from the date of acceptance). When a fiber optic cable (existing or new) is utilized, submit splice machine, OTDR and power meter readings. Submit one copy of all required final documentation listed in the specs to Bureau of MSE and one copy to the respective TOC. The contractor is still responsible to maintain all systems until acceptance, including regular system checks when in operation for longer than six months.
Note: The above instructions are specific to Transportation Systems Management ITS facilities, and contain general information applicable to other ITS facilities managed by other units within the Department. Some of the sites provide specific instructions for other units, but clarification from those units should be requested as needed. Some of the others:
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Last Updated: April 2, 2013