Is it necessary to turn on the low beam before switching to high beam?

[StLukas]

Turning on the low beam is necessary before switching to the high beam. If the low beam is not turned on, the high beam will only flash briefly. Only after the low beam is activated and you switch between low and high beams can the high beam stay on continuously. Here are situations where high beams should not be used: 1. Situation one: When meeting oncoming traffic on roads without central barriers or centerlines, high beams must not be used within 150 meters of the opposing vehicle. High beams are also prohibited when meeting non-motorized vehicles on narrow bridges or roads without central barriers or centerlines. 2. Situation two: High beams must not be used when driving at night without streetlights, under poor illumination, or in low-visibility conditions such as fog, rain, snow, or dust, especially when a following vehicle is driving close behind another vehicle in the same direction. When overtaking at night, drivers should alternate between low and high beams to alert the vehicle ahead.