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150 meters
450 feet.
300
500
in the fog --------------------------- Actually using high beams in fog can blind oncoming drivers and it will reflect off the fog possibly blinding you. Low beams shopuld be used in fog. High beams are to be used on a dark road when no oncoming vehicle is closer than 500 feet from you, and when you are no closer than 350 feet behind a vehicle.
Within 500 feet of an oncoming car. Within 350 feet of a car you are traveling behind.
500 feet.
Within 500 feet of oncoming traffic.
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.
If an oncoming car has its high beams on, you should avoid looking directly at the lights and instead focus on the right side of the road. This will help you maintain your visibility and minimize the glare. Additionally, you can slow down slightly, but be careful not to suddenly brake or swerve as it can be dangerous.
Each US state and Canadian province has its own regulation on dimming distance. However, most states specify that you must use low beams within 500 feet of an oncoming vehicle, and within 200 feet of a leading vehicle (travelling your same direction). These distances are quite outdated; they were specified when high beams were allowed to produce only less than half the present allowable maximum intensity, and have not been updated as headlamp regulations and technology have evolved. Technically and physiologically, distances more appropriate to today's North American-market headlamps are 700 feet for oncoming, 300 feet for leading vehicles. Nevertheless, if you adhere to 500/200, you will in most cases be meeting your legal obligation.
That depends on your state laws. Check with your local Department of Motor Vehicles or garage mechanic. For example, Idaho requires that the low beams light an area of 100-350 feet in front of the vehicle. In Connecticut, low beams must illuminate persons or vehicles at least 100 feet away. However, the state's motorcycle laws differentiate based on the bike's speed-- 100 feet at less than 25 mph, but 200 feet at 25-35 mph, and an illumination of 300 feet if the vehicle is moving at over 35 mph.