At what distance should you switch to low beam when meeting another vehicle?

[SanEliana]

When meeting another vehicle at night, you should switch to low beam within 150 meters of the oncoming vehicle. Here are the relevant details: Regulations: Article 48 of the "Implementation Regulations of the Road Traffic Safety Law of the People's Republic of China" stipulates: On roads without central separation facilities or center lines, drivers must switch to low beam when meeting another vehicle at night at a distance of more than 150 meters from the oncoming vehicle. When meeting non-motorized vehicles on narrow roads or bridges, low beam must be used. When driving at night without streetlights, under poor lighting conditions, or in low-visibility situations such as fog, rain, snow, dust, or hail, vehicles following closely behind another vehicle in the same direction should use low beam. When passing sharp curves, slopes, arched bridges, crosswalks, or intersections without traffic signals at night, drivers should alternately flash their high and low beams as a signal.