Making a U-turn under the bridge requires waiting for the red light. U-turns anywhere must observe traffic lights, signs, and markings, as well as any time-specific regulations. Precautions for making a U-turn: When making a U-turn, you should turn on the left turn signal in advance. The maximum driving speed must not exceed 30 kilometers per hour, and you must not obstruct other vehicles and pedestrians traveling normally. Other situations where U-turns are permitted are as follows: Presence of a U-turn signal or sign: When there is a U-turn signal at an intersection, you can make a U-turn when the U-turn indicator is green. If there is a U-turn sign at the intersection or a U-turn marking on the lane, you can make a U-turn while ensuring your own and others' safety. No U-turn sign but left turns are allowed (no prohibition of U-turn signs): Vehicles can make a U-turn at intersections where left turns are permitted and no prohibition of U-turn signs or markings are present. It should be noted that vehicles must proceed according to the left turn lane signal without affecting the normal movement of other vehicles. If making a U-turn at an intersection with a left turn waiting area, you can first enter the left turn waiting area when the straight signal is green and wait until the left turn signal turns green before making the U-turn. U-turns are allowed at dashed lines: U-turns are permitted at both white and yellow dashed lines. For double yellow lines with one solid and one dashed, check whether your side is the dashed line. If it is, you can make a U-turn safely; if it is solid, U-turns are not allowed. If encountering double yellow lines with one solid and one dashed at an intersection, you can make a U-turn on the dashed side, but you must not cross the stop line ahead.
