
On highways, there are no restrictions on vehicle license plate numbers. License plate restrictions are generally implemented in urban areas as a by traffic management authorities to alleviate traffic congestion. Maximum speed limits on highways: The maximum speed for passenger cars on highways shall not exceed 120 km/h, other motor vehicles shall not exceed 100 km/h, and motorcycles shall not exceed 80 km/h. For roads with 2 lanes in the same direction: On highways with 2 lanes in the same direction, the minimum speed for the left lane is 100 km/h. For roads with 3 or more lanes in the same direction: On highways with 3 or more lanes in the same direction, the minimum speed for the leftmost lane is 110 km/h, and the minimum speed for the middle lane is 90 km/h. Vehicles prohibited from entering highways: Pedestrians, non-motor vehicles, tractors, wheeled special machinery vehicles, articulated buses, full trailer trucks, and other motor vehicles with a design speed below 70 km/h are not allowed to enter highways.

I encountered this issue last time I went on a long-distance trip. The regulations vary too much in different places. In big cities like Beijing and Shanghai, during peak hours on the outer ring expressways, they directly block vehicles with non-local license plates. My colleague was caught last year driving a non-local car into Shanghai. But if you're traveling on pure highways between ordinary cities, they generally don't care about your license plate's origin. The key is to check the navigation in advance—now apps like Gaode and Baidu will pop up restriction alerts. Also, temporary license plate vehicles should be extra careful, as many places don't even allow them on the highways. It's best to call 12123 before setting off to clarify.

It depends on which highway section you're taking. Urban expressways and intracity highways often follow city-specific traffic restriction policies, like the Hangzhou Ring Expressway which has restricted hours. However, purely intercity highways generally allow all license plates 24/7. From my road trip experience, here's a pro tip: check the local traffic police's official account and search for 'traffic restriction notices' - it never fails. Last year in Zhengzhou during smog alerts, even local vehicles faced odd-even plate restrictions, and highway access required compliance with special regulations.

It really can't be generalized! Last month, I just helped a friend look into this. For urban expressways in the Yangtze River Delta and Pearl River Delta regions, they directly impose restrictions on out-of-town vehicles during morning and evening rush hours. However, purely transit highways like the Beijing-Hong Kong-Macao Expressway don't have such restrictions. The key is to remember two points: first, check whether the road section belongs to the urban expressway system, and second, verify if the local area has activated pollution emergency response measures. It's advisable to keep an updated list of cities with traffic restrictions nationwide on your , updated to 2024, as many new restricted areas have been added in Shandong and Henan provinces.

Let me explain in three scenarios. The first category includes urban expressways like Beijing's Sixth Ring Road and Shanghai's Outer Ring Road, which follow the same traffic restrictions as the city center. The second category involves special sections like Guangzhou Airport Expressway, which have their own separate restriction rules. The third category consists of pure transit routes such as the Lianyungang–Horgos Expressway, where license plate restrictions are generally not enforced. Field tests show that new energy vehicles enjoy privileges – last week in Chengdu, green-plated cars were seen passing unimpeded. However, zones are exceptions; during roadworks on Shenyang–Haikou Expressway last year, even local vehicles had to follow odd-even plate restrictions.

I've studied the traffic regulations on this. According to the Road Traffic Safety Law, ordinary highways don't have license plate restrictions, but many urban ring expressways are classified as urban expressways for purposes. Pay special attention to three regions: Beijing-Tianjin-Hebei, Yangtze River Delta, and Pearl River Delta, as their expressway restriction policies are frequently upgraded. Here's a lesser-known fact: some tunnels and bridges have separate restrictions, like the Hangzhou Bay Bridge which prohibits hazardous chemical vehicles. Before traveling, it's recommended to set your navigation with license plate information to automatically avoid restricted routes.


