What is the minimum engine displacement for motorcycles to be allowed on highways?
2 Answers
Motorcycles with an engine displacement of 50cc or above are permitted on highways. Below are specific daily maintenance methods for motorcycles: 1. Idle speed control: During the break-in period, maintain motorcycle idle speed at 100 rpm. 2. Gear-speed correspondence: Match motorcycle gears with appropriate speeds. 3. Braking method: When braking is required for obstacles ahead, release the throttle, apply the rear brake with your right foot, while gently applying the front brake with your right hand. 4. Spark plug installation method: For new spark plugs, hand-tighten until snug, then use a spark plug socket to tighten an additional quarter to half turn.
What is the minimum engine displacement for motorcycles to ride on highways? I've been riding for over a decade and frequently use highways, so let me share some insights. Legally, motorcycles with an engine displacement above 50cc are allowed, but in practice, 125cc or above is more reliable. The minimum speed limit on highways is 60km/h. Small-displacement bikes like 100cc models often struggle to maintain speed when climbing hills or keeping up with traffic, making them vulnerable to being overtaken by trucks and increasing accident risks. I find my 250cc bike much more stable on highways—it accelerates quickly, handles well, and safely integrates into traffic flow. Additionally, wearing a helmet is mandatory, and carrying passengers is prohibited nationwide, though local regulations vary. Western provinces like Sichuan may allow it, while major cities like Beijing and Shanghai enforce stricter restrictions. Always check local road signs or traffic apps before your trip. Safety first—don't risk riding a small-displacement bike on highways.
