Masuyuki Naruse, a Japanese inventor in southwest Japan, says he has revolutionized the brake and accelerator pedals of automobiles, to make it safer for drivers. Naruse says the side by side pedal arrangement that exists today, makes it easy for drivers to mistakenly floor the accelerator, instead of brakes, when under stressful situations. His solution? A single pedal that accelerates the vehicle when pressed with the side of the foot, and brakes when the pedal is pushed down. Mr. Naruse’s pedal has been around for two decades, but until recently, his design has not been takes seriously. About 130 cars are equipped with Mr. Naruse’s pedal, mostly owned by friends and acquaintances. He holds patents for the Naruse Pedal in Japan, the United States and six other countries.

Ririko Takeuchi, a Tokyo-based spokeswoman for Toyota, said the company could not comment on Mr. Naruse’s pedal design. But she said Toyota “listens to ideas received from the public, because we believe there’s always room for improvement.”