Patent ID: 6359552
Filing Date: 2002-03-19
Classification: G08G

Abstract:
A collision avoidance system for a vehicle mounted on the vehicle, comprising:an acceleration sensor to detect deceleration of the vehicle while the vehicle is traveling on a roadway; a transmitter for transmitting a warning signal from a rear portion of the vehicle for a specific distance in response to said acceleration sensor detecting deceleration, a receiver for receiving the warning signal from a forward direction, wherein said transmitter, in response to said receiver receiving the warning signal, selectively transmits the warning signal as a retransmission in a manner preventing the warning signal from being transmitted down the entire roadway based on one of the power level and frequency selection techniques in conjunction with receiver sensitivity and signal processing; and an external conventional brake warning light on said rear portion of said vehicle, said brake warning light being actuated when said transmitter transmits said warning signal.