Vehicle lamp system for indicating autonomous driving and charge level of battery

A vehicle lamp system comprising:

• a lamp for indicating an autonomous driving state of a vehicle while the vehicle is driving, and
• a control unit for performing control to cause the lamp to indicate a charge level of a battery while the vehicle is stationary,
• wherein the lamp includes an elongated light guide body that continuously extends along a straight line or a curve and a plurality of light emitting devices arranged at an interval in a longitudinal direction of the light guide body,
• wherein the light guide body includes a trunk portion for indicating the autonomous driving state and the charge level to an outside of the vehicle, and a plurality of branch portions branching out from the trunk portion toward respective light emitting devices, and
• wherein the control unit controls the output of light from each of the light emitting devices to change an illuminated range of the light guide body according to the charge level of the battery.