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