A vehicle U-turn refers to making a turn with clear U-turn signage, allowing the vehicle to turn left or right backward and proceed in the opposite direction. When making a U-turn, the left turn signal should be activated in advance, the maximum speed should not exceed 30 kilometers per hour, and it must not hinder other normally moving vehicles and pedestrians. Conditions under which a U-turn is allowed: U-turn is permitted at intersections with U-turn signs: If there is a clear U-turn sign at an intersection, a U-turn can be made; if there is a U-turn traffic light, the U-turn must follow the signal's instructions. If there is no traffic light, a U-turn can be made based on the specific situation, provided it does not interfere with other vehicles or pedestrians. U-turn is allowed at intersections without explicit prohibition signs or left-turn signs: If there is no explicit prohibition of U-turns, then a U-turn can be made. Here, "no explicit prohibition of U-turns" means as long as there are no "No U-turn signs," "No left-turn signs," or solid lines in the middle of the road, a U-turn can be made confidently. U-turn is also allowed on yellow grid lines: Yellow grid lines are actually no-parking grid lines painted at intersections prone to congestion due to temporary parking, entrances/exits of important facilities, and other intersections where they are needed. Any vehicle stopping on the no-parking grid line (including waiting for traffic lights) is considered a violation. Although vehicles cannot stop in the yellow grid line area, U-turns are indeed allowed there. As long as there is no central road barrier, the yellow grid line is equivalent to "U-turn permitted." Intersections with U-turn traffic lights: This is straightforward—if there is a U-turn traffic light, then the signal must be followed; a U-turn can only be made when the light is green. When "No left turn" and "U-turn permitted" signs appear together: U-turns are allowed, but left turns are prohibited. However, "No U-turn" is not the same as "No left turn." Things to note when making a U-turn at an intersection: Observe road markings—if they are solid lines, U-turns are not allowed under any circumstances, and you should continue driving to find a suitable U-turn location. If there is a "No left turn" sign ahead, even if there is no mention of prohibiting U-turns, U-turns cannot be made at that intersection because the actions of left turns and U-turns are very similar, and a U-turn always requires a left turn first. U-turns must be made from the innermost left-turn lane. If you are in the second left-turn lane, a U-turn cannot be made at that intersection. When making a U-turn, you must yield to vehicles going straight and only proceed if it does not interfere with their normal movement; otherwise, you will bear full responsibility for any accidents. Generally, near the intersection stop line, lanes have guiding arrows for vehicles to choose their direction. The leftmost lane does not always have a left-turn arrow; on some roads, if there is a straight arrow, even without explicit "No U-turn" signs, U-turns are not allowed.
