... W * H)deceleration zone, also known as speed brakes, slowing arch, buffer strips, speed bumps, slow plastic, deceleration pad, slow road humps ... , rubber deceleration road humps, rubber speed hump, rubber buffer, rubber speed bump, road speed hump, road rubber speed hump, road humps, rubber deceleration ... red or green, can attract drivers to pay attention, reduce speed and improve safety. speed bumps