Data mining in {TAIL ~ a digital map database} to identify {HEAD ~ intersections} located at hill bottoms and enabling precautionary actions in a vehicle 
Data mining in { TAIL ~ a digital map database } to identify { HEAD ~ intersections } located at hill bottoms and enabling precautionary actions in a vehicle
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH