Patent ID: 7840355

Claim:
An accident avoidance system for a host vehicle, comprising: a global positioning system residing on the host vehicle for determining the host vehicle's location as the host vehicle travels based on signals received from one or more satellites; a navigation system residing on the host vehicle coupled to the global positioning system; the navigation system including a display and being operative to display images on the display to an occupant of the host vehicle representing a vicinity associated with the host vehicle; wherein the navigation system is further operative to update the images shown on the navigation system display to reflect changes in the location of the host vehicle; a database arranged onboard the vehicle and including data about roadways that a vehicle can travel on, the data including location of edges of the roadways, wherein the navigation system is further operative to display on the display a map of the vicinity of the host vehicle based in part on information from the database, wherein the map of the vicinity of the host vehicle being displayed on the display shows a shape of the roadway or edges of the roadway, a processor residing on the host vehicle and coupled to the positioning system, the processor being operative to determine, based on data about defined travel corridors, that the host vehicle has deviated from a particular travel corridor on which it was travelling and activate an alarm in response to determining that the host vehicle has deviated from that travel corridor.