Abstract: A stop lamp system includes a control apparatus that controls a turn-on state of a stop lamp based on a turned-on/off state of a stop lamp switch in conjunction with an operation of a brake pedal, a turned-on/off state of a stop lamp turn-on request signal and a turned-on/off state of a stop lamp turn-off request signal. When the stop lamp turn-on request signal is in the turned-on state and the stop lamp turn-off request signal is in the turned-on state, the control apparatus gives priority to the turned-on state of the stop lamp turn-on request signal and turns on the stop lamp.

Abstract: In a stroke sensor abnormality determining device, a stroke sensor detects the stroke of a brake pedal by detecting a voltage that varies in accordance with the stroke of the brake pedal. An abnormality determining section determines whether an abnormality has occurred in the stroke sensor on the basis of the voltage detected by the stroke sensor. A pedal position determining section determines whether the brake pedal is positioned near a stroke start end. If it is determined that the brake pedal is positioned near the stroke start end, the abnormality determining section does not determine that an abnormality has occurred in the stroke sensor.

Abstract: In a stroke sensor abnormality determining device, a stroke sensor detects the stroke of a brake pedal by detecting a voltage that varies in accordance with the stroke of the brake pedal. An abnormality determining section determines whether an abnormality has occurred in the stroke sensor on the basis of the voltage detected by the stroke sensor. A pedal position determining section determines whether the brake pedal is positioned near a stroke start end. If it is determined that the brake pedal is positioned near the stroke start end, the abnormality determining section does not determine that an abnormality has occurred in the stroke sensor.