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Equipment Package: HRI Traffic Management

Description: This equipment package monitors highway-rail intersection (HRI) equipment at the roadside which manages highway traffic. Various levels of roadside equipment may be interfaced to, and supported by, this equipment package to include standard speed active warning systems and high speed systems which provide additional information on approaching trains and detect and report on obstructions in the HRI. This equipment package remotely monitors and reports the status of this roadside equipment. A two way interface supports explicitly status requests or remote control plan updates to be generated by this equipment package. Status may also be received periodically in the absence of a request or asynchronously in the event of a detected failure or other unsafe condition at the intersection.
Included In: Central Access Traffic Signal Control
Local Traffic Signal Control Systems
NFTA/Metro Bus and Rail Operations Control Center
NITTEC Traffic Operations Center
General Functional Requirements 1 - The center shall remotely control highway-rail intersection (HRI) equipment located in the field.
2 - The center shall accept collect highway-rail intersection (HRI) advisory or alert data from rail operations centers.
3 - The center shall collect highway-rail intersection (HRI) equipment operational status and compare against the control information sent by the center.
4 - The center shall provide the highway-rail intersection (HRI) equipment operational status to rail operations centers.
5 - The center shall collect incident information related to a highway-rail intersection (HRI), such as intersection blockages or crashes or equipment malfunctions.
6 - The center shall implement control plans to coordinate signalized intersections around highway-rail intersections (HRI), under control of center personnel, based on data from sensors and surveillance monitoring traffic conditions, incidents, equipment faults, pedestrian crossings, etc.

Last updated: 11-18-05