Vehicle illumination system

A vehicle illumination system is provided with a detector 3 for detecting pedestrians around or ahead of a vehicle 2, a spot lamp 4 for projecting a spot light to the detected pedestrian, an actuator 6 for swiveling the spot lamp, and a controller 7 for controlling the spot lamp and the actuator. The controller 7 calculates a possibility of collision between each of a plurality of pedestrians and the vehicle as a collision-risk-degree and then controls the actuator 6 so that an optical axis A of the spot lamp 4 directs to the pedestrian having the highest collision-risk-degree.