What is the safe speed limit on highways?

[BraydenAnn]

Highway safe speed should not exceed the maximum speed limit, with the maximum speed limit being 120 km/h and the minimum speed limit being 60 km/h. Most highways will indicate the driving speed for each lane, which should be followed as per the signage. When driving on a three-lane highway in the same direction, the leftmost lane has a speed limit of 110-120 km/h, the middle lane 90-110 km/h, and the rightmost lane 60-90 km/h. On a two-lane highway, the leftmost high-speed lane has a speed limit of 100-120 km/h, while the middle lane has a speed limit of 60-100 km/h. Under good weather conditions with clear visibility and smooth roads, vehicle speed can be maintained between 110-120 km/h. If there is traffic ahead, drivers should anticipate and reduce speed in time to ensure safe driving and avoid hazards. In rainy weather, when the road is slippery and visibility is poor, it is generally recommended to keep the speed below 100 km/h. In case of moderate or heavy rain, the speed should be reduced to 60-80 km/h. Additionally, front and rear fog lights or hazard warning lights should be turned on.

[JasonDella]

I don't think highway safety speeds can be rigidly set at one number—it mainly depends on the road's speed limits. In China, most highways are limited to 100-120 km/h. But as an experienced driver, I've found that personal safe speeds need to be flexible. In bad weather, like heavy rain or fog, I slow down to 80 or even 60 km/h because visibility drops and braking becomes unstable. When traffic is light during the day, I might drive around 110 km/h; at night, I go slower to ensure reaction time. Vehicle condition is crucial: worn tires or brake pads make high speeds dangerous. I always remind myself to maintain a three-second following distance to avoid rear-end collisions. Even if a modified car performs well, don’t recklessly speed. Regular maintenance plus cautious driving are what truly ensure a safe journey—don’t let rushing cloud your judgment.

[SarahRose]

The safe speed is not a fixed value, but is determined based on traffic regulations and on-site conditions. On highways, the legal speed limit is generally 120 km/h, but as traffic participants, we should treat it as the upper limit—actual safe speeds may need to be lower. In adverse weather conditions like snow or rain, reducing speed to 60–80 km/h is a wise choice. Fatigue or distracted driving can lead to accidents even at lower speeds. I attended a driving training course and learned that maintaining a steady speed is more reliable than frequent acceleration and deceleration. Be cautious with high-powered vehicles—excessive speed can double braking distance, leading to loss of control. It’s advisable to use GPS alert systems to monitor road conditions and check tire pressure regularly to prevent blowouts. The key is to drive slower—life is priceless.

[DiLeah]

I usually drive on the highway for my daily commute, and I feel that a safe speed depends on my own judgment. Speed limit signs typically indicate 100 to 120 km/h, but I find around 110 km/h to be the most comfortable. On rainy or windy days, I definitely slow down, and 80 km/h is more appropriate. If the car is aging, extra caution is needed—like avoiding risky acceleration if the brakes aren't responsive. During rush hour with heavy traffic, keeping the speed below 100 km/h helps maintain smoother traffic flow. From personal experience, maintaining a distance of at least three meters between cars reduces risks. Temperature also plays a role—overheating in summer can lead to tire blowouts, so driving more gently is advisable. Overall, following the rules and avoiding speeding is fundamental, and frequently checking the rearview mirror while driving ensures safety comes first.