Patent ID: 7183942

Claim:
A speed trap detection and warning system for a vehicle, comprising: a signal processor operable to receive signals and to process the received signals to generate vehicle location data defining the location of the vehicle; a travel parameter calculator operable to calculate vehicle bearing data defining the direction of travel of the vehicle; a data store configured to store location data defining a respective location for each of a plurality of speed traps and speed trap bearing data defining a respective operating direction for each of the speed traps; a location comparer operable to compare the vehicle location data with the stored locations data to determine the distance of the vehicle from a stored location and operable to determine whether to alert the user in dependence upon an alert threshold; a direction data processor operable to use the calculated vehicle bearing data and the stored speed trap bearing data to determine whether to alert the user in dependence upon whether the vehicle is travelling in a direction in which a speed trap is operational; and an alerter operable to alert a user to the presence of a speed trap, the alerter being controlled, in use, to alert the user if it is determined by both the location comparer and the direction data processor that the user is to be alerted.