It depends upon driving condition (not time)
you dont,
30 Minutes before sunset
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.
When it is raining during the day you should always keep your headlights on.
I take it you mean day-time running lights? Place the parking brake on the first notch will turn them off and not apply the brake.
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.
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
at dusk till dawn, its the same in every state. there is no time regulation due to the seasons and the amount of light in a day. some states also require they be on in the rain
no but they need a lot of reflectors
unplug your day time running light module, that should turn them off
Turn on your headlights. Even if its during the day, you should turn on your headlight so other drivers can see you a lot more easier than without your lights on.
There is not a certain time but when it becomes dusky you turn them on.