Interface: County and City Traffic Signal Systems - Connected Vehicle Roadside Equipment
Architecture Flow Definitions
arriving train information (Future) Applicable ITS Standards
Information for a train approaching a highway-rail intersection that may include direction and allow calculation of approximate arrival time and closure duration.
intersection control status (Future) Applicable ITS Standards
Status data provided by the traffic signal controller including phase information, alarm status, and priority/preempt status.
roadway dynamic signage data (Future) Applicable ITS Standards
Information used to initialize, configure, and control roadside systems that provide driver information (e.g., dynamic message signs, highway advisory radio). This flow can provide message content and delivery attributes, local message store maintenance requests, control mode commands, status queries, and all other commands and associated parameters that support remote management of these systems.
signal preemption request (Future) Applicable ITS Standards
Direct request for preemption to a traffic signal controller that results in preemption of the current control plan and grants right-of-way to the requesting vehicle. This flow identifies the required phase and timing of the preemption. This flow may also cancel the preemption request (e.g., when the requesting vehicle clears the intersection).
track status (Future) Applicable ITS Standards
Current status of the wayside equipment and notification of an arriving train.