Wortformen:(regular plural) courtesy lights
noun (Automotive engineering: Vehicle components, Bodywork, controls, and accessories) A courtesy light is an interior light in a vehicle that goes on when the door is opened. ⇒ She was sitting in the car studying a map by the courtesy light. ⇒ The white portion of the light serves as a courtesy light when getting in or out of the car. The red portion serves as a marker light to oncoming traffic that the door is open. ⇒ As soon as you open the door, the courtesy light comes on so that you can see your way.
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