Double yellow dashed lines allow U-turns when there are no prohibitory U-turn signs and when it does not affect normal traffic flow. However, double solid lines prohibit U-turns, and violating this rule constitutes a traffic offense. According to the Road Traffic Safety Law, violators will be fined 200 yuan and receive 3 penalty points. On long roads, solid or dashed white or yellow lines are usually present in the middle section or before intersections. U-turns are prohibited on any solid lines. Permissible U-turn scenarios: Intersections with U-turn signs allow U-turns: If an intersection has a clear U-turn sign, U-turns are permitted. If there is a U-turn traffic light, follow its instructions. In the absence of a traffic light, U-turns can be made as long as they do not obstruct other vehicles or pedestrians. Intersections without explicit "No U-turn" or "No Left Turn" signs allow U-turns: If there are no signs explicitly prohibiting U-turns, they are allowed. "No explicit prohibition" means the absence of "No U-turn" or "No Left Turn" signs and no solid center lines, in which case U-turns are permitted. Yellow grid lines also permit U-turns: Yellow grid lines are no-parking zones marked at intersections prone to congestion due to temporary stops, important facility entrances, or other designated areas. Stopping on these lines (including waiting for traffic lights) is illegal. However, U-turns are allowed on yellow grid lines as long as there is no central barrier, effectively making them "U-turn permitted" zones. Intersections with U-turn traffic lights: If a U-turn traffic light is present, follow its signal—U-turns are allowed only on green. When "No Left Turn" and "U-turn Permitted" signs coexist: U-turns are allowed, but left turns are prohibited. Note that "No U-turn" does not necessarily mean "No Left Turn." Precautions when making U-turns at intersections: Check road markings—U-turns are strictly prohibited on solid lines under any circumstances. Continue driving to find a suitable U-turn spot. If a "No Left Turn" sign is present, U-turns are also prohibited at that intersection, even if "No U-turn" is not explicitly stated, because U-turns inherently involve a left turn. U-turns must be made from the innermost left-turn lane. U-turns are not allowed from the second left-turn lane. Yield to straight-moving traffic before making a U-turn. Failing to do so will make you fully liable for any accidents. Near intersection stop lines, lanes often have guiding arrows. The leftmost lane may not always have a left-turn arrow—if it shows a straight arrow, U-turns are prohibited even without explicit "No U-turn" signs. U-turns on crosswalks are illegal and constitute a traffic violation.
