Patent ID: 6211798
Filing Date: 2001-04-03
Classification: G01C,G08G,G09B

Abstract:
A process for guiding a vehicle to a destination point, comprising the steps of:determining a route to the destination point in the form of consecutive path points that comprise at least geographic coordinates;displaying the route to a driver of the vehicle;continuously determining a current location of the vehicle based on one of data and signals transmitted to the vehicle using a wireless transmission from a remote location;continuously calculating a linear distance from the current location of the vehicle to a next one of the consecutive path points to be passed by the vehicle;comparing the calculated linear distance to a preestablished minimum value;replacing the preestablished minimum value with the calculated linear distance if the preestablished minimum value exceeds the calculated linear distance in the step of comparing; andsignalling a departure from the route if the calculated distance exceeds the preestablished minimum value by a predetermined threshold value.