New York City Sub-regional ITS Architecture

Functional Area: ISP Probe Information Collection

The center shall collect traffic probe data (speeds, travel times, etc.) from appropriately equipped vehicles and short range communications equipment.
The center shall aggregate collected traffic probe data, calculate route segment travel times, route segment speeds, and route usage, and disseminate to other centers.
The center shall collect environmental probe data (air temperature, exterior light status, wiper status, traction control status, etc.) from appropriately equipped vehicles and short range communications equipment.
The center shall aggregate collected environmental probe data and disseminate the aggregated environmental probe data to other centers.
The center shall receive traffic probe data collected by transit fleet operators and include this data in aggregated probe data provided to other centers.
The center shall receive traffic probe data derived from electronic toll collection operations and include this data in aggregated probe data provided to other centers.

Functional Area: TMC Traffic Metering

The center shall remotely control systems to manage use of the freeways, including ramp, interchange, and mainline metering.
The center shall collect operational status from ramp meters, interchange meters, and mainline meters and compare against the control information sent by the center.
The center shall collect fault data from ramp meters, interchange meters, and mainline meters.
The center shall implement control strategies, under control of center personnel, on some or all of the freeway network devices (e.g. ramp meters, interchange meters, and mainline meters), based on data from sensors monitoring traffic conditions upstream, downstream, and queue data on the approaches to the meters.

Functional Area: TMC Probe Information Collection

The center shall collect traffic probe data from vehicles via roadside field equipment.
The center shall collect road condition data from probe-equipped transit vehicles via transit management centers; the data may be aggregated and preliminarily processed at the sending center.
The center shall collect traffic data from traveler information centers based on data from their subscriber vehicles; the data may be aggregated and initial link time calculations performed at the sending center.
The center shall collect traffic data from toll administrative centers containing travel times between toll collection points for those vehicles equipped for electronic toll collection; the data may be aggregated and processed at the sending center.
The center shall assimilate current and forecast traffic conditions based on collected probe data and distribute to other centers for dissemination to travelers.
The center shall collect operational status for the roadside probe data collection equipment.
The center shall collect fault data for the roadside probe data collection equipment for repair.

Functional Area: TMC Regional Traffic Management

The center shall exchange traffic information with other traffic management centers including incident information, congestion data, traffic data, signal timing plans, and real-time signal control information.
The center shall exchange traffic control information with other traffic management centers to support remote monitoring and control of traffic management devices (e.g. signs, sensors, signals, cameras, etc.).

Functional Area: TMC Signal Control

The center shall remotely control traffic signal controllers.
The center shall accept notifications of pedestrian calls.
The center shall collect traffic signal controller operational status and compare against the control information sent by the center.
The center shall collect traffic signal controller fault data from the field.
The center shall manage (define, store and modify) control plans to coordinate signalized intersections, to be engaged at the direction of center personnel or according to a daily schedule.
The center shall implement control plans to coordinate signalized intersections based on data from sensors.
The center shall manage boundaries of the control sections used within the signal system.
The center shall maintain traffic signal coordination including synchronizing clocks throughout the system.

Functional Area: TMC Traffic Information Dissemination

The center shall remotely control dynamic messages signs for dissemination of traffic and other information to drivers.
The center shall remotely control driver information systems that communicate directly from a center to the vehicle radio (such as Highway Advisory Radios) for dissemination of traffic and other information to drivers.
The center shall collect operational status for the driver information systems equipment (DMS, HAR, etc.).
The center shall collect fault data for the driver information systems equipment (DMS, HAR, etc.) for repair.
The center shall retrieve locally stored traffic information, including current and forecasted traffic information, road and weather conditions, traffic incident information, information on diversions and alternate routes, closures, and special traffic restrictions (lane/shoulder use, weight restrictions, width restrictions, HOV requirements), and the definition of the road network itself.
The center shall distribute traffic data to maintenance and construction centers, transit centers, emergency management centers, and traveler information providers.
The center shall distribute traffic data to the media; the capability to provide the information in both data stream and graphical display shall be supported.
The center shall provide the capability for center personnel to control the nature of the data that is available to non-traffic operations centers and the media.

Functional Area: ISP Traveler Data Collection

The center shall collect, process, and store traffic and highway condition information, including incident information, detours and road closures, event information, recommended routes, and current speeds on specific routes.
The center shall collect, process, and store maintenance and construction information, including scheduled maintenance and construction work activities and work zone activities.
The center shall collect, process, and store transit routes and schedules, transit transfer options, transit fares, and real-time schedule adherence information.
The center shall collect, process, and store parking information, including location, availability, and fees.
The center shall collect, process, and store toll fee information.
The center shall collect, process, and store current and forecast road conditions and surface weather conditions.
The center shall collect, process, and store event information.
The center shall collect, process, and store air quality information.
The center shall collect, process, and store border crossing information.