NOACA Regional ITS Architecture

VS15: Infrastructure Enhanced Cooperative Adaptive Cruise Control

Need Area Description

This service package adds Infrastructure to Vehicle (I2V) communications to Cooperative Adaptive Cruise Control systems so that strings of compatible CACC–equipped vehicles can be more efficiently formed and cooperating vehicles gain access to speed recommendations and traffic control status from the infrastructure, further enhancing traffic flow stability and improving highway capacity and throughput. Speed recommendations provided by the infrastructure can be used to stabilize traffic flow, reducing speed differentials and enhancing throughput along a route that includes a bottleneck. Access to traffic control information such as signal phase and timing enables synchronized starts by adjacent CACC–equipped strings of vehicles, increasing intersection throughput. The infrastructure can also assist with broader coordination between CACC–equipped vehicles, enabling strings of vehicles to be more efficiently formed that share performance parameters and destinations.

Need Area Type

Safety

Service Package

VS15: Infrastructure Enhanced Cooperative Adaptive Cruise Control

Includes Needs

Number	Need
01	The Connected Vehicle needs to be able to move into a platoon and inform the vehicle driver of how, when, and where to safely join a platoon.
02	The Connected Vehicle needs to be able to operate in a platoon, including coordination of speed and gap policy with other vehicles in the platoon.
03	The Connected Vehicle needs to be able to leave a platoon and return manual throttle control to the driver so they can change lanes safely.
04	Traffic Operations needs to be able to disseminate speed and gap recommendations and other information to connected vehicles in a platoon on roads instrumented to allow infrastructure support of platooning.
05	Traffic Operations needs to monitor platoon vehicles to enable strings of vehicles to be more efficiently formed by sharing performance parameters and destinations.