An object of the present invention is to prevent accidents that would have to sprint the car squished the accelerator until the chassis floor mistook the brake, to provide a stepping difference prevention device. The invention relates to those it is intended to be used to spread a low price in the construction process of the stepping difference accident of automobile accelerator single one-piece and lead only to all models in the goal. In order to reliably prevent the accident, established a current switching circuit breaker on the back of the accelerator pedal, the accelerator pedal force by depressing the difference of the accelerator - pie force work is utilizing sensors of current breaker stomp undercarriage to the floor, engine connecting and disconnecting the power supply of the oil supply pump and, the car being incapacitated. In addition, compression and exhaust functions to reliably safely stop to become the engine brake has been surviving. The brake lamp is lit at the same time, to call attention to the following vehicles other. .BACKGROUND
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