Patent ID: 7865300

Claim:
A system for providing turn-by-turn directions for rendezvousing with a moving waypoint comprising: a first position determining system for determining the present geographic position of the moving waypoint from a cellular telephone network and a transmitter configured to transmit the present geographic position of the moving waypoint; a tracking vehicle including a second position determining system for determining the present geographic position of the tracking vehicle from the cellular telephone network and a receiver configured to receive the present geographic position of the moving waypoint; wherein future movement of both the moving waypoint and the tracking vehicle are constrained by a local road network; and the tracking vehicle further includes a map database containing the defined movement constraints of the local road network, a position predicting module that applies the constraints of the local road network, the constraints comprising dead-end streets, one-way streets, speed limits, weather information, traffic accident information, traffic slow down information, and construction information to the present geographic position of the moving waypoint to generate a rendezvous point for the tracking vehicle and the moving waypoint and adjusts the rendezvous point to a safe stop, the safe stop selected from the group consisting of a parking lot and a rest stop, and a turn-by-turn direction generating module which generates turn-by-turn directions from the present position of the tracking vehicle to the adjusted rendezvous point.