雨雪雾都不应该用远光的，给你一些链接吧，
Sometimes, however, high beams will not improve your visibility. In fact, it will do the opposite.
This happens in fog, heavy rain, and snow. In these situations, the light from your high beams will reflect back from the fog/rain/snow and cause glare. The glare will make it more difficult to see ahead. To improve visibility, switch to low beams.
https://driversprep.com/use-high-beam-headlights/Use Your Headlights
Even if it’s only lightly sprinkling, your headlights will help you see the road better. Plus, having your headlights on allows other drivers to see you. However, contrary to what you may think, using your high-beam headlights will actually make things worse: the light from the beams will reflect back at you off the water in the air, actually making it harder for you to see.
https://www.idrivesafely.com/dri ... /drive-in-the-rain/说到教条的问题，如果晚上下雨视线不好，正确的做法应该是减速，换成远光并不会减少危险。