To provide a curving light capable of supplementing a dead angle of a headlight when a motorcycle runs on a curve at night, and preventing an accident such as toppling-over attributable to pebbles and contacting with a vehicle parked on the road in advance.

A curving sensor switch is set on a lower part of a headlight of a motorcycle, and a spot light is lit on the side opposite to the inclination of a motorcycle body while running on a curve. Since the curving light is lit in the direction opposite to that of a direction indicator, it is operated only when an upward light of the headlight is operated.