Cooperative Intersection Collision Avoidance Systems

A significant aspect of the PATH research in intersection safety addresses vehicle-infrastructure cooperation and is part of the national Cooperative Intersection Collision Avoidance System (CICAS). These activities will extend the work on these subjects that was started in the Intersection Decision Support (IDS) project, providing greater breadth and depth of information than previously available. The project also extends the prior IDS work from a single traffic controller and cabinet, to address how the CICAS systems can be interfaced to the broad range of traffic control devices that already exist in the field. Our initial concept for a dynamic sign to convey alert information to the drivers will be extended to address a broader range of intersection conflict situations, and our initial alert algorithms will be extended as well, based on the enhanced knowledge developed in this project. One aspect of the project is to dynamically hold the all red interval. This effort in toto dictates the need for a strong human factors, which is also part of our effort.

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