A aytime running lamp (DRL, also daylight running lamp or daytime running light) is a lighting device on the front of a roadgoing motor vehicle, installed in pairs, automatically switched on when the vehicle is moving forward, and intended to increase the conspicuity of the vehicle during daylight conditions. DRLs might have been first seriously proposed in 1961 in the USA, in response to Texas then-Governor Price Daniels' drive-safely campaign..