What is the speed limit on urban elevated roads?

[DiKing]

Urban elevated roads have a speed limit of 80 kilometers per hour, with a tolerance of up to 10% over the limit. Minimum speed limit: Most sections of elevated roads have a posted minimum speed limit of 50 kilometers per hour. However, under normal road conditions, there is no enforcement for driving below this speed, effectively meaning there is no minimum speed limit on elevated roads. Expressway speed limits: The maximum speed on expressways must not exceed 120 kilometers per hour, and the minimum speed must not be lower than 60 kilometers per hour. For small passenger vehicles on expressways, the maximum speed must not exceed 120 kilometers per hour, while other motor vehicles must not exceed 100 kilometers per hour, and motorcycles must not exceed 80 kilometers per hour.

[AveryDella]

I think the speed limits on urban elevated roads should be discussed based on practical experience. I've been driving a private car for almost twenty years, and the speed limits on elevated roads are usually between 60 to 80 kilometers per hour, but this isn't fixed—it depends on the city and the specific section. For example, in Shanghai, some areas with many curves have a limit of 60, while straight sections might allow 80. In Beijing, the limit is reduced during peak hours—safety first, after all. Always pay attention to roadside signs, and slow down even more in rain, snow, or fog. Once, I was in a hurry and slightly exceeded the limit, only to get caught by a speed camera and fined 200 yuan—totally not worth it. My long-term driving habit is to avoid rushing; maintaining a steady speed saves fuel and keeps the car in good condition. Car enthusiast groups often share differences in speed limits across cities, and downloading a navigation app with real-time alerts makes things easier and safer, helping avoid unnecessary accidents. It’s about being responsible for yourself and others.

[DiErin]

From a technical automotive perspective, urban viaduct speed limits are typically set at 60-80 km/h. Engineers calculate this based on physical principles such as braking distance and reaction time - higher speeds exponentially increase accident risks. My research on intelligent systems shows some bridges use variable electronic signs that automatically reduce speed limits to 50 km/h during cold/foggy conditions to prevent skidding. I recommend drivers upgrade vehicle equipment like adaptive cruise control and use navigation apps for real-time speed limit alerts to avoid tickets. Personal testing shows maintaining steady speeds within limits extends engine life and reduces maintenance; statistics indicate 30% fewer accidents when obeying speed limits. New technologies like vehicle automatic speed limit recognition deserve wider adoption. Applying scientific knowledge makes driving safer and more efficient.

[OIris]

I commute to work on the elevated highway every day and am quite familiar with the speed limit changes. In Shanghai, most speed limits are 60-80 km/h, but during rush hours, you can only drive at 40-50 km/h due to heavy traffic. Relying on navigation apps for real-time speed limit alerts helps avoid tickets. The key is to follow the rules, avoid speeding for safety, and develop good habits for stable driving, fuel efficiency, and fewer accidents. Simply put, aim for the road signs, use the app for assistance, and ensure a safe arrival home and punctual work.