The system computes a plurality of {HEAD ~ available traffic routes} from the current location to {TAIL ~ the destination location} or to the destination region 
to
The system computes a plurality of { HEAD ~ available traffic routes } from the current location to { TAIL ~ the destination location } or to the destination region
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH