Gerd Draeger

Route planning method for use in a navigation system

Guiding method for an object, especially a motor vehicle using a navigation system, back along a route already traveled, especially where the route lies outside available navigational data

Updating routing and traffic flow data and vehicle navigation device

Method for making available route data for a navigational device

Method for encoding and decoding objects with reference to a road network

Methods and device for managing traffic disturbances for navigation devices

Method of route planning in a navigation system

Method and device for transmitting navigation information from data processing center to an on-board navigation system

Method of exchanging navigation information

Method for providing navigation instructions