| 摘要 |
The vehicle speed is obtained from a speedometer and a beam switching threshold for the irradiation direction of a headlight corresponding to the speed is initialized. In addition, the headlight is switched to low beam if the number of times of appearance (appearance frequency) of a light source within a prescribed period as detected by a light source detection unit is at or above the beam switching threshold. The irradiation direction of the headlight is switched to high beam after a prescribed time (beam switching prohibited time Tp) has passed after the irradiation direction of the headlight has been switched to low beam. |
