A lamp for an autonomous vehicle, comprising: a light emitting unit; an interface; and a processor configured to: in a state in which the autonomous vehicle is operating in a manual driving state, control the light emitting unit to emit a light into a space outside the autonomous vehicle, and in a state in which the autonomous vehicle is transitioned from the manual driving state to an autonomous driving state, control the light emitting unit to not emit a light into the space outside the autonomous vehicle, wherein the processor is further configured to: receive driving situation information via the interface, characterized in that the driving situation information includes information as to whether a nearby vehicle is a manually driven vehicle, and in a state in which the autonomous vehicle is operating in the autonomous driving state, control the at least one light emitting unit to emit a light into the space outside the autonomous vehicle in response to the nearby vehicle being determined to be a manually driven vehicle. a light emitting unit; an interface; and a processor configured to: in a state in which the autonomous vehicle is operating in a manual driving state, control the light emitting unit to emit a light into a space outside the autonomous vehicle, and in a state in which the autonomous vehicle is transitioned from the manual driving state to an autonomous driving state, control the light emitting unit to not emit a light into the space outside the autonomous vehicle, wherein the processor is further configured to: receive driving situation information via the interface, characterized in that the driving situation information includes information as to whether a nearby vehicle is a manually driven vehicle, and in a state in which the autonomous vehicle is operating in the autonomous driving state, control the at least one light emitting unit to emit a light into the space outside the autonomous vehicle in response to the nearby vehicle being determined to be a manually driven vehicle. in a state in which the autonomous vehicle is operating in a manual driving state, control the light emitting unit to emit a light into a space outside the autonomous vehicle, and in a state in which the autonomous vehicle is transitioned from the manual driving state to an autonomous driving state, control the light emitting unit to not emit a light into the space outside the autonomous vehicle, wherein the processor is further configured to: receive driving situation information via the interface, characterized in that the driving situation information includes information as to whether a nearby vehicle is a manually driven vehicle, and in a state in which the autonomous vehicle is operating in the autonomous driving state, control the at least one light emitting unit to emit a light into the space outside the autonomous vehicle in response to the nearby vehicle being determined to be a manually driven vehicle. receive driving situation information via the interface, characterized in that the driving situation information includes information as to whether a nearby vehicle is a manually driven vehicle, and in a state in which the autonomous vehicle is operating in the autonomous driving state, control the at least one light emitting unit to emit a light into the space outside the autonomous vehicle in response to the nearby vehicle being determined to be a manually driven vehicle.