Abstract: Apparatus for synchronizing vehicle braking indicators to reduce braking reaction times of following vehicles includes a transmitter and signaler on each vehicle for producing rearwardly directed IR and visible radiation, respectively, in response to operation of vehicle brakes; and a forwardly oriented receiver for detecting a counterpart of the IR radiation. The apparatus substantially eliminates typical following divers' reaction times of one to two seconds per car, giving extra braking room of 100 to 200 feet per car at 70 MPH. The signaler can activate conventional brake lights of the vehicle and/or auxiliary brake lights, preferably for a limited signaling duration. The receiver can be responsive to a vehicle speedometer signal for operation only at or above a predetermined speed such as 10 MPH.

Abstract: A portable, inexpensive, and easy to operate vehicle oxygen sensor analyzer shows, in real time, on an ultra-bright LED display, the dynamic operation of the oxygen sensor, simulates sensor signals into the computer, while monitoring the oxygen sensor to confirm correct computer operation, and performs a quick, simple and accurate test on the oxygen sensor to prove that it will pass emissions tests for oxygen sensors of the type typically required under emissions control regulations.