What does it indicate when the illumination distance of motor vehicle lights changes from near to far at night?
2 Answers
When the illumination distance of motor vehicle lights changes from near to far at night, it may indicate that the vehicle is entering a downhill slope. Here are some precautions for driving at night: 1. Reduce speed: Visibility is poorer at night than during the day, so drive slowly and maintain an appropriate speed. 2. Use high and low beams correctly: Use low beams during normal driving to avoid inconveniencing oncoming vehicles. Use high beams when turning or going uphill to signal oncoming traffic. 3. Maintain a safe distance from the vehicle ahead: Poor visibility and slower reaction times at night increase the risk of rear-end collisions if following too closely, so keep an appropriate distance. 4. Use the horn: Be alert for pedestrians crossing the road at night. Observe carefully and use the horn or flash lights to warn them in advance. 5. Avoid unnecessary overtaking: Overtaking at night should be done cautiously, ensuring a straight-line distance from the vehicle ahead. Avoid overtaking on curves. Before overtaking, approach the vehicle ahead and use light signals to prompt it to slow down and yield. Only accelerate when the other vehicle has clearly yielded.
When the headlight beam changes from near to far during night driving, it means the driver has switched from low beam to high beam. Having driven trucks for over a decade and frequently traveled on highways at night, this kind of switching is all too common for me. High beams are usually turned on when there are no vehicles ahead or when entering open road sections, illuminating the road surface over a hundred meters away to spot obstacles or animals in advance. However, special attention must be paid to the rule of meeting traffic: as soon as you see the headlights of an oncoming vehicle, you must immediately switch back to low beam; otherwise, the intense light can blind the other driver. I've personally witnessed rear-end collisions caused by high beams, which is why I've developed the habit of timely switching. Using high beams in rainy weather can also create glare that affects visibility, something new drivers should be particularly mindful of. Remember to check if the bulbs are aging, as dim lights can also affect the illumination distance. There are countless roads, but safety always comes first.
