Most likely headlight switch is not making proper contact (best case - clean and relubricate), or there is an open in the wiring (wires need repairs or replacing).
Loose connection somewhere. Bad switch maybe.
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.
Always have your headlights on
If it's raining enough for wipers on you have to have headlights on. Intermittent wiper its not required.
i think white because of headlights
I think you mean, "Why do my headlights turn of while I'm driving" There might be an issue with your fuses or eletrical system.
Your battery is weak, or your your alternator is not charging battery.
Increased glare from lights, especially oncoming headlights when driving at night.
directional arm
Just on the front of your car on either side to help you see in the dark while you are driving!
most likely bad switch
Down and towards the outer edge of the road. Away from the lights.