A daytime running lamp (DRL), also known as daytime running light, is an automotive lighting and bicycle lighting device on the front of a road going motor vehicle or bicycle. It is automatically switched on when the vehicle's handbrake has been pulled down, when the vehicle is in gear, or when the engine is started, emitting white, yellow, or amber light.
A daytime running lamp (DRL), also known as daytime running light, is an automotive lighting and bicycle lighting device on the front of a road going motor vehicle or bicycle. It is automatically switched on when the vehicle's handbrake has been pulled down, when the vehicle is in gear, or when the engine is started, emitting white, yellow, or amber light.
Source: Wikipedia "Daytime running lamp" · CC BY-SA 4.0
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