Apparatus and {HEAD ~ method} for defining a safety zone using {TAIL ~ a radiation source} for a vehicle 
Apparatus and { HEAD ~ method } for defining a safety zone using { TAIL ~ a radiation source } for a vehicle
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH