This standard provides the guideline for enhancements to adaptive cruise control (ACC) by the addition of wireless communication from relevant vehicles (V2V) and/or the infrastructure (I2V) to augment the ACC active sensing capability. The CACC system operates under driver responsibility and supervision and is limited to the following:

Does only longitudinal control of the vehicle.

Uses time gap control strategy similar to ACC.

Motor vehicles covered in the scope of this document include light and heavy vehicles. The message elements to realize CACC and platooning are part of the scope.

The initial release covers definitions for CACC and platooning and requirements for CACC, while a subsequent release will cover the platooning requirements.