In an illumination device for a vehicle, when a recognition part has recognized that a pedestrian may be present on an advancing route and when a detection part has detected that a driver has recognized the pedestrian, an exterior light is brought into either a first lit or first not-lit state, and when the recognition part has recognized that the pedestrian may be present on the advancing route and when the detection part has detected that the driver has not recognized the pedestrian, the exterior light is brought into either a second lit or second not-lit state, and the first lit state and the second lit state are different from each other and the first not-lit state and the second not-lit state are different from each other.

To perform optical axis adjustment according to the state of a vehicle. A vehicle headlight control apparatus which controls an optical axis of irradiation light emitted by a headlight of a vehicle including: a specification unit that specifies a vehicle state; and an optical axis adjustment unit that receives results from the specification unit and adjusts the optical axis; where the specification unit: sets a reference value which pertains to an acceleration to a first value when the vehicle is an engine vehicle; sets the reference value to a second value which is smaller than the first value when the vehicle is not an engine vehicle; then specifies the vehicle state to be a stopping state when the acceleration detected by an acceleration sensor is smaller than the reference value; and specifies the vehicle state to be a non-stopping state when the acceleration is greater than the reference value.

Methods and apparatus to determine a vehicle pitch angle for luminous range control are disclosed. An example method to determine a pitch angle of a vehicle relative to a surface on which the vehicle stands for luminous range control of a headlight of the vehicle includes determining, at a standstill of the vehicle, a change of a load pitch angle of the vehicle based on output from a gravitation sensor, determining, as the vehicle is driven, an average value of the pitch angle of the vehicle and an average value of a dynamic pitch angle of the vehicle, the average value of the dynamic pitch angle determined via output from an acceleration sensor, determining a current value of the dynamic pitch angle via the output from the acceleration sensor, determining a current value of the load pitch angle of the vehicle based on the average value of the pitch angle and the average value of the dynamic pitch angle, determining, based on the current value of the load pitch angle and the current value of the dynamic pitch angle, the pitch angle of the vehicle relative to the surface, and controlling an orientation of the headlight of the vehicle based on the pitch angle of the vehicle relative to the surface.