Definition: Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Input: Obviously, in certain cases, California law requires you turn your car headlights on. But when it isn't required, is it nevertheless legal to keep them on, or are there situations when it is illegal to drive with your headlights on? And if so, what are those cases?

Output:
In California, is it always legal to drive with your car headlight on?