A light control system is provided. In the system, an processor sets a maximum light quantity of a lighting device according to the curvature radius of the road the own vehicle travels. The processor then controls the light quantity of the lighting device so as to be equal to or less than the maximum light quantity. According to the system, a maximum light quantity of the lighting device is set according to a curvature radius. Accordingly, a light quantity is appropriately set so as not to dazzle the driver of another vehicle.