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What does variable speed limit on highways mean?

2 Answers

AustinDella

07/25/25 8:41am

Variable speed limit on highways is used for roads and expressways to timely remind drivers of their driving speed. The speed limit value can be displayed through the monitoring center based on actual road conditions, thereby effectively guiding traffic flow, promoting driving safety, and improving the transportation capacity of the road network. Maximum speed of vehicles on highways: The maximum speed of small passenger cars on highways shall not exceed 120 kilometers per hour, other motor vehicles shall not exceed 100 kilometers per hour, and motorcycles shall not exceed 80 kilometers per hour. For two lanes in the same direction: The minimum speed of the left lane is 100 kilometers per hour. For three or more lanes in the same direction: The minimum speed of the leftmost lane is 110 kilometers per hour, and the minimum speed of the middle lane is 90 kilometers per hour.

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OAubree

08/10/25 7:01pm

As a long-haul driver, I really appreciate the variable speed limits on highways. Those are the speed limits displayed on large electronic signs that automatically adjust based on traffic conditions. For example, during congestion or rainy weather, it can instantly drop from 120 to 80, reminding everyone to drive slower for safety. This intelligent system helps reduce rear-end collisions caused by sudden braking and creates smoother traffic flow overall. I find following it beneficial, especially during peak hours - it saves fuel and reduces traffic paralysis. Though new drivers might need time to adapt - don't just rely on your navigation system.

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