What is the standard for adjusting the height of low beam headlights?
2 Answers
The standard for adjusting the height of low beam headlights is: drive the car onto a flat road, adjust the low beam point to a distance of 30 meters with the two points overlapping, and adjust the high beam point to be parallel to the ground. Use a wall to adjust the two high beam points to be parallel. Here is an introduction to related knowledge about low beam headlights: Function: The low beam headlight is designed for close-range illumination, with a large coverage range (160°), short illumination distance, and non-adjustable focus. Usage scenarios: When driving in dark areas without streetlights, or during dusk when it is darker or at dawn when the light is just appearing, the low beam headlights must be turned on; if encountering heavy fog, snow, or heavy rain that obstructs visibility, the low beam headlights must be turned on even during the day; in some areas where there are lighting facilities but the brightness is insufficient, the low beam headlights should also be turned on.
The standard for adjusting the height of low beam headlights is primarily based on national regulations, such as the GB standard in China, aiming to prevent the lights from dazzling oncoming drivers and causing accidents. Generally, the center of the beam should be at a distance of about 10 meters in front of the vehicle, with the height adjusted slightly lower than the headlight's position—approximately 1% to 2% lower—depending on the vehicle's height. When dealing with such issues, I always remind everyone to measure on a flat surface: park the car, aim at a wall 10 meters away, and ensure the beam center is no more than 0.5 meters below the predetermined reference point. If the vehicle's load changes, such as carrying luggage, the height should be rechecked. Don’t overlook safety—proper settings ensure clear nighttime visibility while avoiding trouble. In practice, many cars have an interior knob for manual adjustment, but when in doubt, it’s best to visit a professional shop to ensure compliance, as it’s truly crucial.
