Eagle Pass Regional ITS Architecture (Final)

Element Expanded Functional Requirements: City of Eagle Pass International Bridge Field Equipment

Functional Area: Roadway Basic Surveillance
  1. The field element shall collect, process, digitize, and send traffic sensor data (speed, volume, and occupancy) to the center for further analysis and storage, under center control.
  2. The field element shall collect, process, and send traffic images to the center for further analysis and distribution.
  3. The field element shall collect, digitize, and send multimodal crossing and high occupancy vehicle (HOV) lane sensor data to the center for further analysis and storage.
  4. The field element shall return sensor and CCTV system operational status to the controlling center.
  5. The field element shall return sensor and CCTV system fault data to the controlling center for repair.
Functional Area: Roadway Traffic Information Dissemination
  1. The field element shall include dynamic messages signs for dissemination of traffic and other information to drivers, under center control; the DMS may be either those that display variable text messages, or those that have fixed format display(s) (e.g. vehicle restrictions, or lane open/close).
  2. The field element shall include 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, under center control.
  3. The field element shall include pedestrian information systems under center control (e.g. warning pedestrians of a potential hazard, or providing mandatory instructions as to the availability of pedestrian access).
  4. The field element shall provide operational status for the driver information systems equipment (DMS, HAR, etc.) to the center.
  5. The field element shall provide fault data for the driver information systems equipment (DMS, HAR, etc.) to the center for repair.
Functional Area: Field Barrier System Control
  1. The field element shall activate barrier systems for transportation facilities and infrastructure under center control. Barrier systems include automated or remotely controlled gates, barriers and other systems that manage entry to roadways.
  2. The field element shall return barrier system operational status to the controlling center.
  3. The field element shall return barrier system fault data to the maintenance center for repair.
  4. The field element shall receive requests for access from approaching vehicles using field-vehicle communications and validate and authenticate the requests.
  5. The field element shall grant access only to qualified vehicles.
  6. The field element shall communicate access permission status and access instructions to approaching vehicles using field-vehicle communications.
Functional Area: Field Safeguard System Control
  1. The field element shall activate safeguard systems, equipment used to mitigate the impact of incidents on transportation infrastructure (e.g., blast shields, tunnel exhaust systems, etc.) under center control.
  2. The field element shall return safeguard system operational status to the controlling center.
  3. The field element shall return safeguard system fault data to the maintenance center for repair.