Interface: Caltrans D11 Field Equipment - Level 2 Cities Connected Vehicle Equipment

Caltrans D11 Field Equipment to Level 2 Cities Connected Vehicle Equipment Interface Diagram

Information Flow Definitions

intersection control status  (Planned)  

Status data provided by the traffic signal controller including phase information, alarm status, and priority/preempt status.

restricted lanes application status  (Planned)  

Current RSE application status that is monitored by the back office center including the operational state of the RSE, current configuration parameters, and a log of lane use (aggregate profiles of vehicles that checked in to the lane and reported vehicle speeds in the lanes) and RSE communications activity.

signal priority service request  (Planned)  

A service request for vehicle priority issued to a traffic signal controller that results in green extension or other accommodation for the priority vehicle, within the current signal timing plan. The request includes the priority level, the desired time and duration of service, and the intended travel path through the intersection. This flow also allows the RSE to cancel a previously issued request for priority.

vehicle signage local data  (Planned)  

Information provided by adjacent field equipment to support in–vehicle signing of dynamic information that is currently being displayed to passing drivers. This includes the dynamic information (e.g., local traffic and road conditions, work zone information, lane restrictions, detours, closures, advisories, parking availability, etc.) and control parameters that identify the desired timing, duration, and priority of the signage data.