How many times should the high and low beams be toggled?

[VonKeegan]

High beam and low beam lights should be toggled 2-3 times for light signaling. The applicable scenarios and precautions for high beam usage are as follows: Applicable scenarios for high beams: Generally, when driving on roads with poor lighting conditions, such as highways, vehicles need to turn on high beams. However, when meeting other vehicles, drivers should switch to low beams and then revert to high beams afterward. Precautions for high beam usage: On narrow roads when encountering non-motorized vehicles, low beams should be used. At intersections controlled by traffic signals, high beams must not be used.