What are the rules for using car lights?

[DelLucy]

Car light usage rules are as follows: During nighttime when street lights are on, or when driving under conditions of low visibility such as fog, rain, snow, dust, or hail, the headlights, width lights, and rear position lights should be turned on. When turning, changing lanes, overtaking, making a U-turn, or pulling over, the turn signal should be activated 100 to 50 meters in advance. When a motor vehicle passes through an intersection controlled by traffic lights and turns left, the turn signal should be activated, and the low beam should be used when driving at night. When a following vehicle is driving close to the vehicle in front in the same direction, the high beam should not be used. Additionally, on roads without central barriers or center lines, when meeting another vehicle at night, the low beam should be switched to when the oncoming vehicle is more than 150 meters away. When meeting non-motorized vehicles on narrow roads or narrow bridges, the low beam should be used. When a motor vehicle passes through sharp curves, slopes, arched bridges, crosswalks, or intersections without traffic light control at night, it should alternately use the high and low beams to signal.