The action undertaken may be communicating to at least one of the vehicles potentially involved in the collision an indication of the collision prediction to enable the driver of {HEAD ~ the vehicle} to initiate {TAIL ~ an action} to prevent the collision, or automatically implementing a change in the movement of one vehicle 
to initiate
The action undertaken may be communicating to at least one of the vehicles potentially involved in the collision an indication of the collision prediction to enable the driver of { HEAD ~ the vehicle } to initiate { TAIL ~ an action } to prevent the collision , or automatically implementing a change in the movement of one vehicle
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH