a precautionary action application, responsive to the positioning system and the database, that provides a precautionary action when the positioning system determines that {HEAD ~ the current location} is approaching {TAIL ~ a location} associated with precautionary action data 
is approaching
a precautionary action application , responsive to the positioning system and the database , that provides a precautionary action when the positioning system determines that { HEAD ~ the current location } is approaching { TAIL ~ a location } associated with precautionary action data
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 HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH