An object of the present invention is to provide an apparatus, {HEAD ~ use} of {TAIL ~ an apparatus} and method for defining a safety zone for a vehicle 
An object of the present invention is to provide an apparatus , { HEAD ~ use } of { TAIL ~ an apparatus } and method for defining a safety zone for a vehicle
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH