
Exceeding 80 km/h in an 80 km/h speed limit zone is considered speeding. According to the "Road Traffic Safety Law of the People's Republic of China": Article 42 Motor vehicles driving on the road shall not exceed the maximum speed indicated by speed limit signs. On road sections without speed limit signs, a safe speed shall be maintained. When driving at night or on road sections prone to danger, or under weather conditions such as sandstorms, hail, rain, snow, fog, or icy roads, the driving speed shall be reduced. Additional content on the dangers of speeding: 1. Impact on vehicle operating conditions Long-term speeding can lead to poor vehicle operating conditions, increasing the likelihood of tire, braking system, and steering system failures. Without regular maintenance and timely fault resolution, it can easily induce traffic accidents. 2. Increased risk of losing control and rollover during turns Speeding vehicles are often in a state of changing lanes and overtaking, each overtaking maneuver creating conflict points with surrounding vehicles, exacerbating safety hazards for both the speeding vehicle and others. If encountering obstacles or sharp turns, the vehicle is more prone to losing control or even rolling over, and the consequences of collisions can be more severe.

On highways with a speed limit of 80 km/h, most of the time, the tolerance for speeding is approximately 5 to 10 km. As an experienced driver with many years on the road, I've driven through numerous sections. I remember once on the highway, my speedometer showed 85 km/h, and I wasn't caught, but exceeding 88 km/h is risky. This is because traffic police equipment has a margin of error, and staying within 10% might not result in penalties, but be cautious of speed cameras. From a safety perspective, speeding increases braking distance and makes the car more prone to skidding in rainy conditions. It's advisable to develop good habits—keeping the speedometer around 83 km/h is the safest, avoiding risky speeding. If you really want to go a bit faster, consider briefly accelerating when traffic is smooth, but don't exceed this limit.

From my experience, when the speed limit is 80 km/h, you generally won't be fined if you stay under 85. I often drive this route, and the dashboard always shows a higher speed - for example, it might display 87 when the actual speed is only 83, due to GPS speed measurement differences. However, once you exceed 90, the risk increases significantly. Surveillance cameras are highly accurate with minimal errors, making it easier to get caught. The lesson I've learned is: use mobile navigation to calibrate speed in real-time and stay within the 10% upper limit for safety. Also, be aware that tire wear affects speed perception, with new tires offering better grip. The key is to go with the flow, avoid deliberate acceleration, and remember that getting home safely is far more important than saving time.

I think driving at 87 km/h on an 80 km/h speed limit road is pretty much the limit. As a young car enthusiast who has driven many modified car models, the speedometers are often inaccurate, and the actual speed is usually lower. Technically speaking, most systems ignore speeding within 10%, but don't rely on it. With electronic aids like ACC systems, they can help maintain reasonable acceleration. Considering wind resistance and fuel consumption, exceeding by 5 km/h is acceptable. Try not to take risks.


