Within 500 feet of incoming traffic.
Within 500 feet of oncoming traffic.
When you are within 500 feet of an oncoming vehicle or you come up behind a vehicle.
500ft if it's oncoming. 350ft if you're coming up behind someone.
450 feet.
I have been i situation in the Australian outback where you can be approaching a car for nearly an hour traveling at over 120 kmh and their high beam is already irritating. so I turn mine down when ever I see on coming traffic. and normally they do the same for me. So the right time to turn down your high beam is when you are facing oncoming traffic. any time you are blinded by oncoming traffic just flash your high beams and in the majority of cases the oncoming car will dip his lights.
If you can see the oncoming vehicle then he can see you. Dim your lights at that time.
Here in California, by law it's 500 feet (a football field-and-a-half), but be kind and dim your bright lights well before that.
Within 500 feet of an oncoming car. Within 350 feet of a car you are traveling behind.
Every US state—including Michigan—and every Canadian province has laws specifying when you must dip from high to low beams in terms of distance to a leading or oncoming vehicle. Michigan requires every motorist to use low beams (not high beams) within 500 feet of oncoming traffic per MCL 257.700 . Violation code 2740 covers Failure to Dim, Driving with Glaring Lights (which also means misaimed lights) and various other headlamp-related infractions. 2 points and fines and fees totalling up to $130.
Within 500 feet of an oncoming car. Within 350 feet of a car you are traveling behind.
500 feet
500 feet if the vehicle is coming to you, 300 feet if you are following it.