What are the regulations for using high beams on highways?

[OPreston]

Highway high beam usage regulations are as follows: 1. Reasonableness: When driving at night, proper use of headlights not only illuminates the road ahead for yourself but also avoids affecting the safety of other drivers. 2. Separation: If there is a central barrier on the road, such as bushes or a median strip, using high beams will not affect oncoming traffic. However, it's important to note that the barrier must be continuous and opaque. For spaced barriers like trees, you should promptly switch to low beams. The maximum range of high beams is generally 120,000mm, and you should switch to low beams when the distance to oncoming traffic is 150,000mm. 2. Distance to the vehicle ahead: Highway speeds are typically around 100km/h, and under these conditions, a distance of at least 100,000mm should be maintained. Therefore, high beams can be used when the distance to the vehicle ahead exceeds 150,000mm. When the distance to the vehicle ahead decreases, you should promptly switch to low beams.