Motorized bicycles in Japanese law are treated as a 'miniature version of a motorcycle' in many cases, but a motorized bicycle should hook turn to the right in some cases on a signalized intersection with more than three lanes including a L/R turn lane in the same direction. A vehicle that has a maximum speed of over 20 km/h (12.4 mph) also requires, as a miniature version of a motorcycle, to have similar performance in terms of its brakes, tires, silencer, headlight, license plate lamp, rear reflector, side mirror, horn, tail lamp, brake lamp, direction indicators and speedometer. Hence, a regular bicycle to which an engine or motor has been simply added is illegal.