around 200 feet :)
60 meters
450 feet.
You must dim your high-beams if you're within 500 feet of an approaching car and dim your high-beams within 300 feet of the vehicle you follow.
500 feet
High beam headlights can illuminate anywhere from 30 meters to 150 meters ahead of the car. This is 98 feet to 492 feet away.
100
Normally 500 feet, but think if you wanted someones headlights in your eyes.
500 miles away
If you can see his headlights, drop your high beams. In some states its the law 300 feet at least.
A quarter mile. If not correct answer - change the law. California law states - Your high beams have to be dimmed within 300 feet of following another driver and within 500 feet of an oncoming driver.
Think of it this way, when you see a vehicle. more then likely it sees you, so try to lower the high beams as soon you realize another vehicle is infront of you. The law in Oregon is 350 feet.