Why are the front lights of a car on during daytime driving?

[DiAdriana]

Daytime running lights (DRLs) are automatically turned on when the car is driven during the day, and they cannot be turned off. As long as the car is started, the lights will automatically illuminate. Below are specific details about DRLs: 1. Function: DRLs are not for illumination to help the driver see the road but rather to signal to pedestrians or other vehicles that a car is approaching, falling under the category of signal lights. 2. Requirements: DRLs must meet basic brightness requirements but should not be too bright. Unlike regular low-beam headlights, DRLs are specifically designed for daytime driving illumination. Those using LED technology further enhance energy efficiency, consuming only 10% of the energy used by regular low-beam headlights. When the car engine starts, the DRLs automatically turn on and gradually increase in brightness to attract the attention of other motor vehicles, non-motor vehicles, and pedestrians on the road.