What is a daytime running lamp?

A daytime running lamp is designed to enhance the visibility of a vehicle during the day. This type of light is automatically activated when the vehicle is in motion, helping to make the vehicle more conspicuous to other drivers, cyclists, and pedestrians. The primary purpose is to reduce the risk of daytime accidents by ensuring that the vehicle stands out from its surroundings.

Daytime running lamps do not replace headlights during nighttime; they are specifically for daytime use to increase safety. The other options do not capture this function accurately; for example, a light that turns on at night is used for illumination rather than daytime visibility. A feature for signaling turns refers to turn indicators, which serve a different purpose. Likewise, fog lights are specialized lights used to enhance visibility in foggy conditions, rather than general daytime visibility. Thus, the definition of a daytime running lamp aligns perfectly with the explanation of its function, which is to improve visibility during daytime driving.