Vehicle automatic headlight turn on in N. America?

Question

Is it strict law in U.S? any new car need to set it?

Answer 1

yes.

Answer 2

Daytime running lights are standard equipment on all General Motors vehicles built after about 2001.  They are not required by law in the US.  Ford and Chrysler built vehicles do not have them.

Answer 3

drl-daytime running lights-not always required, in all states.

twilight sentinel-featured on some cars-turns lights on and off by amount of daylight sensed. not required.

Answer 4

No, some car are equipped with daytime running lights and some are no, it is not required.