A properly functioning vehicle sound for pedestrians system significantly improves pedestrian safety. Studies have shown that adding sound to electric vehicles can help reduce the number of accidents and injuries involving pedestrians. By making electric vehicles more detectable to pedestrians and cyclists at low speeds, these safety systems aim to prevent accidents caused by the quiet nature of electric vehicles. In the U.S., regulations require vehicle sounds to be detectable at certain distances for various speeds, and researchers have tested how well people detect electric vehicle sounds in terms of these requirements.