What is the maximum speed allowed on a highway with a speed limit of 120?

[VonEmmett]

Highway speed limit 120 maximum speed is 120 mph. Although China's traffic regulations stipulate that speeding within 10% of the speed limit will not result in penalty points or fines, some regions may still treat it as a traffic violation, requiring the driver to handle it at the traffic violation processing window. Therefore, safety comes first, and speeding should be avoided. Below are specific details about speeding penalties: 1. Less than 10%: If the speed exceeds the limit by less than 10%, a warning will be issued. 2. Between 10% and 20%: If the speed exceeds the limit by more than 10% but less than 20%, a fine will be imposed, and 3 penalty points will be recorded. 3. Between 20% and 30%: If the speed exceeds the limit by more than 20% but less than 30%, a fine will be imposed, and 6 penalty points will be recorded. 4. Between 50% and 70%: If the speed exceeds the limit by more than 50% but less than 70%, a fine will be imposed, 12 penalty points will be recorded, and the driver's license may also be revoked.

[JeremiahDella]

On highways, I usually drive right at the indicated 128 km/h—experienced drivers know that when the dashboard shows 128, the actual speed is around 120. It's common knowledge that the speedometer displays a slightly higher speed than reality. Nowadays, navigation apps report speed very accurately, even alerting you if you exceed the limit by just 1 km/h. Last time I drove my friend's German car, the dashboard showed 125 km/h while the navigation reported 119 km/h. But don’t risk speeding—I’ve seen too many people get caught going 130 km/h while overtaking. Speed traps in many provinces are set very strictly, and even with a 10% buffer, steep downhill sections can still land you a ticket. Driving steadily is both safer and saves money.

[LeLeilani]

According to traffic regulations, 120 is the upper limit, but in practice, I've noticed a pattern: GPS actual speeds under 122 generally go unpunished. This conclusion was earned through five speeding tickets from different provinces. Last year, I was clearly caught at 125 in Jiangsu, fined 200 yuan and deducted three points. There are generally two types of speed detection mechanisms: radar speed measurement with an error margin of ±3 km/h, and average speed detection which is more precise. Although the new traffic rules allow speeding within 20% without point deduction, many highway sections are clearly marked with 'speeding will be penalized.' For safety, it's best not to exceed an actual speed of 122.

[SanGianna]

It depends on the car's condition. When I drive turbocharged cars, I can clearly feel how effortlessly they accelerate beyond 120 km/h, but with our old naturally aspirated family car, the speedometer barely shows 117 km/h even with the pedal to the metal. However, I sincerely advise against pushing the limits. Once when I was in a hurry and drove at 132 km/h, a sudden crosswind during a lane change made the car drift half a lane, leaving my palms drenched in sweat. Nowadays, navigation apps can set overspeed alerts, and notifying speed trap locations 500 meters in advance is particularly effective. On some mountainous highways with cruise control set at 125 km/h, the car unknowingly speeds up to 130 km/h downhill. I recommend enabling the speed limit alarm function, which is even more prompt than navigation.

[VonSerenity]

The maximum speed in rainy weather is 110 km/h. Last month during a heavy rainstorm, I was driving at my usual speed of 118 km/h, but I couldn't brake in time on the cross-sea bridge, and the ABS went crazy due to hydroplaning. Later, I researched and learned that when driving over 100 km/h on waterlogged roads, the tire's water drainage capacity drops sharply. Modified cars need to be even more careful—my friend thought wider tires would provide better grip, but when he took a curve at 128 km/h, he ended up hitting the guardrail. In reality, the 120 km/h speed limit includes a safety margin. I've observed that fully loaded trucks need about 160 meters to brake from 120 km/h, while sedans require around 90 meters. When encountering construction zones narrowed to two lanes, even 80 km/h feels too fast.