How many points are deducted for crossing a single yellow line?

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Crossing a single yellow line in a car generally results in a traffic penalty of 3 points deducted. Here are specific details about single yellow lines: 1. Function: Solid yellow lines are used to separate different lanes, typically painted in the center of the road. Roads with four or more lanes often use double solid yellow lines, while roads with fewer lanes use single solid yellow lines to minimize the space occupied by lane markings. Yellow dashed lines are usually set up on narrower roads, also to separate lanes in different directions, and overtaking or U-turns are allowed when safe. 2. Penalty: U-turns are not permitted at either single or double solid yellow lines. Making a U-turn in such areas constitutes a traffic violation of crossing a prohibited line, punishable by a fine and a deduction of 3 points. Additionally, U-turns are not allowed where signs prohibit them or on special roads like narrow lanes, curves, or tunnels. If a U-turn at a single yellow line causes a traffic accident, the driver will bear primary responsibility for the accident.