Common courtesy would be at least 500 feet.
According to the California Department of Motor Vehicles, the minimum following distance on highways is three car lengths. Anything closer is considered tailgatinging and is both unsafe and against the law. This distance is independent of time of day.
If you can see the area lit by their headlights, then you are probably close enough to dim your own.
Yes, headlights must be on low beam within 500 feet of an approaching vehicle.
When following a vehicle with low beams, you should ideally maintain a distance of at least 200 feet. This distance helps ensure that you remain out of the direct glare of their headlights, allowing for better visibility and safety. Always adjust your following distance based on road conditions and visibility.
when you can see their headlights
Following distance is the space between your vehicle and the vehicle in front of you while driving. Maintaining a safe following distance allows you more time to react to sudden stops or changes in traffic situations, helping to prevent rear-end collisions. The general rule is to keep at least a 3-second distance in good weather conditions, and more in adverse conditions.
When meeting another vehicle at night, you should dim your headlights at least 500 feet away. This helps prevent blinding the other driver and ensures safe visibility for both vehicles. Remember to switch back to high beams once the vehicle has passed and you are at a safe distance.
500 feet if the vehicle is coming to you, 300 feet if you are following it.
300 feet
The minimum distance to dim headlights typically refers to the distance at which a driver must switch from high beams to low beams when approaching oncoming traffic. This distance is generally around 500 feet (about 150 meters) for oncoming vehicles and 200 to 300 feet (approximately 60 to 90 meters) when following another vehicle. Dimming headlights helps prevent glare and ensures safety for all drivers on the road. Always check local regulations, as they may vary by region.
You should probably not be following one in the first place.
Yes. Per the pertinent part of California Vehicle Code section 25950 (a): "The emmited light from all lamps and the reflected light from all reflectors, visible from in front of a vehicle, shall be white or yellow...."