What is the difference between high beam and low beam?

[VanGeorge]

The difference between high beam and low beam: 1. Different illumination range: The high beam emits light parallel from its focal point, with concentrated and bright light that can illuminate distant and high objects; the low beam emits light in a divergent state beyond its focal point, illuminating a larger area of nearby objects. 2. Different usage methods: High beams are used on highways and rural areas without streetlights; low beams are used when driving on urban roads. When driving in dark areas without streetlights, during dusk when it's dim, or at dawn, low beams must be turned on; in case of heavy fog, snow, or heavy rain that obstructs visibility, low beams must be turned on even during the day; in some areas with insufficient lighting, low beams should also be turned on.