30 Minutes before sunset
It depends upon driving condition (not time)
When it is raining during the day you should always keep your headlights on.
Night time.
All the time
you must use your headlights between one-half hour after sunset to one-half hour before sunrise, or anytime when person or vehicles cannot be seen
no but they need a lot of reflectors
Headlights should not be left on while the vehicle is not in use. If you are not driving, you will just drain your battery while having your headlights on.
yes, it's your day time running lights. should be a fuse for it in your relay box under the hood.
you dont,
How far should headlights shine?
You should never over drive your headlights because you are then driving too fast to stop in time for hazards you see on the road.
Your headlights should be on whenever it will make a difference on the road. If you can look at the road and be able to tell that your headlights are on/off, then they should be on. Some states, such as New York, require headlights to be on when visibility is limited, such as in rain or fog, even in the day, regardless of whether or not you can see them on the road. In fact, one of the criteria for headlights is whether or not you are using your windshield wipers. At dusk or, in some states where mandated, when it is raining or foggy and you need to turn on your windshield wipers.