Roadway HOV Control Functional Area


HOV lane usage traffic sensors and display equipment to notify users of HOV lane status for control of traffic in HOV lanes on freeways.

Included In

Caltrans D6 Freeway CCTV
Caltrans D6 Vehicle Detection Systems

Functional Requirements

1The field element shall include sensors to detect high-occupancy vehicle (HOV) lane usage, under center control.
2The field element shall include driver information systems to notify users of lane status for lanes that become HOV or High Occupancy Toll (HOT) lanes during certain times of the day on freeways, under center control.
3The field element shall include freeway control devices, such as ramp signals and mainline metering and other systems associated with freeway operations that control use of HOV lanes, under center control.
4The field element shall collect a count of vehicle occupants from passing vehicles using field-vehicle communications.
5The field element shall provide traffic flow measures and information regarding vehicle occupancy (i.e., lane usage) in HOV lanes to the center.
6The field element shall return operational status for the HOV lane sensors to the controlling center.
7The field element shall return fault data for the HOV lane sensors to the center for repair.