The car's LED daytime running light installed in the front of the car body is a lamp that makes it easier for people to recognize the vehicle when driving in the daytime. Its function is not to make the driver see the road clearly, but to let others know that a car is coming. Therefore, this lamp is not a lighting lamp, but a signal lamp. Of course, adding car daytime running lights can make the car look cooler and more dazzling, but the biggest effect of led daytime running lights is not to be beautiful, but to provide the identifiability of the car. Turning on headlights when driving abroad can reduce 12.4% of vehicle accidents and 26.4% of accident fatalities. In short, the purpose of daytime running lights is for traffic safety.