Vehicle headlight control apparatus, vehicle headlight control method, and vehicle headlight system

A vehicle headlight control apparatus which controls an optical axis of irradiation light emitted by a headlight of a vehicle comprising:

• an acceleration sensor installed in the vehicle;
• a specification unit which specifies whether a state of the vehicle is a stopping state or a non-stopping state;
• an optical axis adjustment unit that adjusts the optical axis of the irradiation light in response to a specified result from the specification unit, by a control corresponding to each of the cases where the state of the vehicle is the stopping state and the non-stopping state;
• wherein, as a first processing, the specification unit:
• sets a reference value which pertains to an acceleration to a first value when the vehicle is an engine vehicle;
• and sets the reference value to a second value which is smaller than the first value when the vehicle is other than the engine vehicle;
• then performs processing, to specify that the state of the vehicle is the stopping state when the absolute value of an acceleration detected using the acceleration sensor is smaller than the reference value, and to specify that the state of the vehicle is the non-stopping state when the absolute value of the acceleration is equal to or greater than the reference value.