What is the minimum engine displacement required for motorcycles to ride on highways?

[LaNolan]

Any motorcycle powered by a fuel engine with a displacement exceeding 50cc (including 50cc) is classified as a motor vehicle, meaning motorcycles with a displacement above 50cc are permitted on highways. However, riders must wear helmets, maintain speeds between 60–80 km/h, avoid carrying passengers, and ride strictly in the rightmost lane. The minimum speed limit on highways is 60 km/h, and motorcycles must not exceed 80 km/h. Due to this minimum speed requirement, only motorcycles with displacements above 50cc are suitable for highway use. In China, however, most local highway regulations prohibit motorcycles from entering expressways, conflicting with the Road Traffic Safety Law of the People's Republic of China and its Implementation Regulations. 1. Article 67 of the Road Traffic Safety Law of the People's Republic of China states: Pedestrians, non-motor vehicles, tractors, wheeled special-purpose machinery vehicles, articulated buses, full trailers, and other motor vehicles designed for speeds below 70 km/h are prohibited from entering highways. This provision does not explicitly ban motorcycles. 2. Section 5, Article 78 of the Implementation Regulations of the Road Traffic Safety Law specifies: Highways must indicate lane speed limits, with maximum speeds not exceeding 120 km/h and minimum speeds not below 60 km/h. Small passenger cars on highways must not exceed 120 km/h, other motor vehicles 100 km/h, and motorcycles 80 km/h. Based on these speed restrictions, motorcycles are only allowed in the outermost lane. 3. Section 5, Article 83 of the Implementation Regulations states: Cargo vehicles on highways must not carry passengers in their cargo areas. Two-wheeled motorcycles are also prohibited from carrying passengers while riding on highways.

[MaverickDella]

In most provinces of China, the regulations for motorcycles on highways require a displacement of at least 250cc, otherwise entry is not permitted. Some regions like Shandong or Henan have even higher standards. I have delved into these regulations and found significant variations between provinces, so it's essential to check the local traffic department's official website or app for specific policies in advance. Motorcycles above 250cc are generally more suitable for highway riding, as they can maintain the 80km/h speed limit steadily, avoiding congestion or safety risks. Additionally, don’t forget to ensure all documents are complete, helmets must be worn, no passengers are allowed, and lights must function properly for night driving—these details ensure a smooth journey. Regularly checking tire pressure and the braking system is also crucial, as sudden breakdowns on the highway can be troublesome.

[DeJuliette]

As a long-time motorcycle rider, I believe engine displacement is crucial for highway safety, with 250cc being the minimum. Below this threshold, the engine is prone to overheating under load, especially during long-distance rides where stability suffers. I've experienced several instances of smaller displacement bikes (under 250cc) feeling unstable at highway speeds, which is extremely unsafe. When considering highway riding, don't just look at displacement - also evaluate the bike's overall weight and power reserve. For example, sufficient torque is needed to handle strong crosswinds. I recommend consulting professional mechanics about installing safety accessories when purchasing, such as extended mirrors or crash bars. Additionally, be mindful of sudden weather changes to avoid slippery roads, and maintaining proper following distance is absolutely essential.

[AmaraDella]

When riding a motorcycle on highways, I recommend choosing a displacement of 250cc, which is sufficient, but regulations vary by region and should be checked. From personal experience, riding below this displacement can be challenging, especially on uphill sections. Additionally, highway speed limits range from 60 to 80 km/h, and exceeding them can result in hefty fines. Safety should always come first—beginners are advised to ride with experienced companions rather than alone.