Navigation system responsive to traffic bulletins

Claim 1

A navigation system for a land vehicle with a bearing system for determining the position of the land vehicle, an input device for specifying a desired destination of the land vehicle, and with means for automatically selecting a route of the land vehicle from its starting position to the destination as a series of consecutive route sections, and with a receiver (2, 3) for receiving and evaluating standard broadcast traffic advisories which relate to respective route sections, wherein the receiver transfers the traffic advisories received to the navigation system (5), upon input of a desired destination, the navigation system (5) automatically selects both a first route, without consideration of the traffic advisories, and a second route, taking traffic advisories into consideration, and stores said first and second routes in respective memory areas (6a, 6b), a comparator (7, 9) is provided, having respective inputs connected to outputs of said respective memory areas, and compares said first and second routes and their respective estimated driving times with each other, identifies which route sections of said first route deviate from the route sections of said second route, and determines which of said deviating route sections have been mentioned in one of said traffic advisories received by the receiver (2,3).