Vehicle control system

A vehicle control system installed on a vehicle, the vehicle capable of executing vehicle driving control, which automatically controls at least a part of driving of the vehicle, the vehicle including a light switch for manually operating a lighting state of a lighting device installed on a body, the lighting device including a small lamp including a side marker lamp or a tail lamp, and a headlight, the light switch including a small-lamp-on position for constantly lighting the small lamp, and an auto-light position to execute an auto-light process in which the lighting state of the lighting device is automatically switched according to a luminance of an external environment, the system comprising a controller configured to control the lighting state of the lighting device,

• wherein the auto-light process is configured to turn on the small lamp when a luminance of an external environment detected by a luminance sensor is smaller than a predetermined first determination value, and to turn on the headlight when the luminance is smaller than a second determination value smaller than the first determination value, and
• wherein the controller is configured to execute the auto-light process when the luminance is smaller than the second determination value in a case where the vehicle driving control is executed in a state where the light switch is operated to the small-lamp-on position.