New York Sub-Regional ITS Architecture

Element Expanded Functional Requirements: TRANSCOM TRANSMIT Server

Functional Area: TMC Traffic Metering
  1. The center shall remotely control systems to manage use of the freeways, including ramp, interchange, and mainline metering.
  2. The center shall collect operational status from ramp meters, interchange meters, and mainline meters and compare against the control information sent by the center.
  3. The center shall collect fault data from ramp meters, interchange meters, and mainline meters.
  4. 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
  1. The center shall collect traffic probe data from vehicles via roadside field equipment.
  2. 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.
  3. 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.
  4. 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.
  5. The center shall assimilate current and forecast traffic conditions based on collected probe data and distribute to other centers for dissemination to travelers.
  6. The center shall collect operational status for the roadside probe data collection equipment.
  7. The center shall collect fault data for the roadside probe data collection equipment for repair.
Functional Area: TMC Regional Traffic Management
  1. 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.
  2. 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
  1. The center shall remotely control traffic signal controllers.
  2. The center shall accept notifications of pedestrian calls.
  3. The center shall collect traffic signal controller operational status and compare against the control information sent by the center.
  4. The center shall collect traffic signal controller fault data from the field.
  5. 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.
  6. The center shall implement control plans to coordinate signalized intersections based on data from sensors.
  7. The center shall manage boundaries of the control sections used within the signal system.
  8. The center shall maintain traffic signal coordination including synchronizing clocks throughout the system.