Patent ID: 9070293
Filing Date: 2015-06-30
Classification: G08G

Abstract:
1. A method of determining whether to alert a driver of a vehicle to a speed limit sign adjacent to a roadway comprising: operating an optical system on-board the vehicle to a) identify a start and an end of an exit ramp adjacent to the roadway, and b) detect a speed limit sign-; monitoring driving maneuvers carried out by the vehicle to determine driving situation information; determining, based on a position of the sign relative to at least one of the start and the end of the exit ramp, whether the sign applies only to the exit ramp; using the driving situation information to determine whether the vehicle is turning off onto the exit ramp; and suppressing a driver alert related to the speed limit sign if it is determined that a) the sign applies only to the exit ramp and b) the vehicle is not turning off onto the exit ramp.