Can You Make a U-turn into the Auxiliary Lane?

[OMatteo]

If there is a sign allowing U-turns, you can directly make a U-turn into the auxiliary lane. Intersections with U-turn signals: No matter what type of intersection it is, if there is a dedicated U-turn signal or ground markings, always follow the instructions of the signal and markings, which are usually located in the leftmost lane. Intersections without U-turn signals but with left-turn signals: When driving in the left-turn lane, if there is no U-turn signal and the vehicle has not crossed the stop line, and the intersection has dashed lines, the U-turn is not restricted by the red light. However, you must yield to other vehicles. When driving in the left-turn lane without a U-turn signal, and the intersection has no dashed lines or gaps in the guardrail, follow the traffic light instructions. You can cross the stop line and pedestrian crossing to make a U-turn when the light is green.

[BlakelyDella]

As a veteran driver with over a decade of experience, I've witnessed too many accidents caused by reckless U-turns. Whether you can make a U-turn into a service road depends on the situation. If there's a clear U-turn permitted sign at the service road entrance and sufficient gap in the median between the main road and service road, then it's permissible. But in 99% of cases, I'd advise against it – service roads are typically designated for buses, non-motorized vehicles, and low-speed traffic. Making an abrupt turn there could get you caught by traffic cameras for violations, and more dangerously, you might collide with suddenly emerging electric bikes. When I need to make a U-turn while driving, I'd rather detour two extra kilometers to find a proper intersection than take such risks. Traffic regulations are clear: U-turns are strictly prohibited at no-left-turn intersections; even when not prohibited, you must ensure you don't obstruct opposing lane traffic. Remember this rhyme: Check signs first, then road conditions, observe traffic flow before proceeding.

[VonRyder]

This is a common issue I encounter when handling accidents at the traffic police station. According to Article 49 of the Regulations for the Implementation of the Road Traffic Safety Law, U-turns are strictly prohibited for motor vehicles at locations with no U-turn or no left-turn signs and markings, as well as at dangerous sections such as railway crossings, pedestrian crossings, and bridges. Regarding auxiliary roads, two key factors must be considered: first, check if there are solid or dashed line markings at the entrance of the auxiliary road—if it's a solid line, you cannot cut in; second, check if there are clear signs permitting U-turns at the junction between the main road and the auxiliary road. From a practical standpoint, in the side-swipe accidents I've handled, 80% occurred when drivers forced a U-turn into an auxiliary road. I particularly want to remind new drivers that many auxiliary roads have blind spots in their design, so when making a U-turn, always ensure there are no buses or special vehicles approaching from behind. The simplest method is to use a mobile navigation app, which will automatically indicate legal U-turn points.

[SanDylan]

I still remember the key points my driving instructor repeatedly emphasized when I was getting my license: When making a U-turn, don't just focus on the main road, pay more attention to the right-of-way on the service road. Theoretically speaking, as long as there's no no-U-turn sign and it doesn't obstruct other vehicles, you can turn into the service road. But in practice, it's full of pitfalls: many service roads have turning radii too small, SUVs might get stuck halfway during U-turns; some service roads get crowded with bicycles during rush hours; the most dangerous are bus-only service lanes - making a U-turn there will cost you 3 points immediately. When I first started driving, I got a ticket at a service road intersection. Later I learned my lesson - turn on the indicator 300 meters in advance, check the rearview mirror to confirm no parallel vehicles, slow down below 10km/h before maneuvering. I suggest new drivers practice narrow-road U-turns on familiar routes first, and don't attempt service road U-turns until they've gained enough experience.

[BrodyRose]

From a road design perspective, there are typically three risk points at the interface between main roads and auxiliary roads: First, the sight distance blind spot makes it difficult for U-turning vehicles on the main road to see incoming traffic from the auxiliary road. Second, the speed difference—where 50 km/h traffic on the main road encounters 20 km/h vehicles on the auxiliary road—greatly increases the risk of rear-end collisions. Lastly, insufficient turning radius at many auxiliary road junctions forces vehicles to occupy two lanes. My recommendation is to prioritize U-turns at intersections with safety islands or sections equipped with dedicated U-turn traffic signals. If you must make a U-turn on an auxiliary road, be sure to change to the leftmost lane at least 50 meters in advance and activate hazard lights to warn following vehicles. Pay special attention to new regulations in certain cities: specific sections like Beijing's Chang'an Avenue and Shanghai's Nanjing Road prohibit U-turns onto auxiliary roads at all times.

[SanAnnie]

Last month, I encountered this situation while dropping my child off at school: the main road was completely blocked, so I tried to make a U-turn from the auxiliary road, only to be rear-ended by an electric bike behind me. After talking with the insurance adjuster, I learned that claims for similar accidents can be very complicated. The key point lies in liability determination: if the traffic police determine that you made a turn at a prohibited location, you will be held fully responsible. From my daily driving experience, the safest approach is to use your phone to record the road conditions as evidence. When faced with a situation requiring a U-turn from an auxiliary road, make sure to document three things thoroughly: whether there are any no-U-turn signs ahead, whether there are any oncoming vehicles behind you, and whether there are any obstacles on the auxiliary road. A special reminder for modified car owners: added front splitters or widebody kits may scrape against the auxiliary road curb during a U-turn. The safest practice is to turn on the panoramic imaging system; if you're really unsure, it's better to skip the U-turn and adjust your route at the next intersection.