What is the following distance when the speed exceeds 100 km/h?

[RhettMarie]

When the speed exceeds 100 km/h, a distance of more than 100 meters should be maintained from the vehicle ahead in the same lane. Article 80 of the "Regulations for the Implementation of the Road Traffic Safety Law" states: When a motor vehicle is driving on the highway at a speed exceeding 100 km/h, it should maintain a distance of more than 100 meters from the vehicle ahead in the same lane; when the speed is below 100 km/h, the distance from the vehicle ahead in the same lane can be appropriately shortened, but the minimum distance should not be less than 50 meters. According to the speed regulations of the "Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China" for highways: Highways should indicate the driving speed of the lanes, with the maximum speed not exceeding 120 km/h and the minimum speed not less than 60 km/h. On highways, the maximum speed for small passenger vehicles should not exceed 120 km/h, other motor vehicles should not exceed 100 km/h, and motorcycles should not exceed 80 km/h. If there are 2 lanes in the same direction, the minimum speed for the left lane is 100 km/h; if there are 3 or more lanes in the same direction, the minimum speed for the leftmost lane is 110 km/h, and the minimum speed for the middle lane is 90 km/h. If the speed indicated by the road speed limit signs is inconsistent with the above lane driving speed regulations, the speed indicated by the road speed limit signs should be followed. During low visibility weather conditions, the following regulations should be observed: When visibility is less than 200 meters, turn on the fog lights, low beam lights, position lights, and front and rear position lights, and the speed should not exceed 60 km/h, maintaining a distance of more than 100 meters from the vehicle ahead in the same lane; when visibility is less than 100 meters, turn on the fog lights, low beam lights, position lights, front and rear position lights, and hazard warning flashers, and the speed should not exceed 40 km/h, maintaining a distance of more than 50 meters from the vehicle ahead in the same lane; when visibility is less than 50 meters, turn on the fog lights, low beam lights, position lights, front and rear position lights, and hazard warning flashers, and the speed should not exceed 20 km/h, and exit the highway as soon as possible from the nearest exit.

[SanAliyah]

When driving on the highway at speeds exceeding 100 km/h, I always maintain a following distance of at least 100 meters. This standard isn't arbitrary—it's clearly mandated by national regulations. My long-distance driving experience has taught me that this buffer zone provides sufficient reaction time when sudden braking occurs ahead. The faster the speed, the longer the braking distance becomes. At 100 km/h, the braking distance alone requires about 60 meters, plus several dozen more meters needed for human reaction time—rounding up to 100 meters ensures proper safety margin. During rainy or foggy conditions, I increase the distance by approximately 50 meters—it's genuinely terrifying how slippery roads compromise braking effectiveness. Normally, I use roadside distance markers for estimation or employ the three-second rule—these are vital driving survival techniques.

[EllianaLynn]

I'm a very cautious driver, especially when the speed exceeds 100 km/h, I always maintain at least a 100-meter distance from the car in front. This is the clearly stated safety standard in traffic regulations. The reason for such a long distance is to account for two key factors: our human reaction time takes about 1 second, during which the car can travel over 30 meters; in terms of actual braking performance, even a good car needs more than 40 meters to stop on dry pavement. Adding these two together comes close to 80 meters, so keeping a full 100 meters gives me peace of mind. I usually estimate distance using fixed reference points, like the 100-meter markers on the roadside. Moreover, areas near highway exits or before curves are particularly prone to rear-end collisions, so I make a conscious effort to increase the following distance in these situations.

[CadenDella]

Maintaining a distance of at least 100 meters when following vehicles at speeds above 100 km/h is a safety baseline stipulated in traffic regulations. Physics dictates its necessity: for every additional ton of vehicle weight, braking distance may increase by 10%; severely worn tires can double stopping distances. These variables make me prefer erring on the side of caution. I adjust following distances by speed brackets: maintaining 100 meters at 100-110 km/h, increasing to around 120 meters when exceeding 120 km/h. A good practice method for judging distance is noting a fixed point passed by the preceding vehicle, then mentally counting "1001, 1002" before reaching that same point. That safety buffer is far more valuable than saving a few seconds.

[Phil]

The biggest fear when driving on the highway is rear-end collisions. Once my speed exceeds 100 km/h, I strictly adhere to the 100-meter following distance rule. This standard is based on real accident statistics and can prevent 70% of highway rear-end collisions. I mainly rely on three methods to maintain this distance: first, adjusting based on the speed displayed on the dashboard; second, confirming with the green distance markers on the roadside; and third, using the built-in cruise control distance setting. In special situations, I increase the distance: by 30% when feeling drowsy at noon, and by an additional 50 meters when behind large trucks carrying sand or gravel, since they frequently drop debris. Actually, maintaining a sufficient distance has another benefit—it allows me to see road conditions a few seconds earlier, making driving decisions more relaxed.

[DelBrianna]

When my speed exceeds 100 km/h, I always maintain a following distance of over 100 meters. This is the safety red line repeatedly emphasized by driving school instructors. The core principle is that at this speed, the vehicle covers nearly 28 meters per second, and any accident can happen in an instant. The most dangerous situation I've encountered was a tire blowout, and thankfully, the sufficient distance allowed me to maintain control. For daily driving, I recommend using the two-second rule: pick a fixed point, and after the car in front passes it, count two seconds before you pass it. When the car is fully loaded, increase the distance further because the added weight can extend the braking distance by 20%. Also, in winter when the road is frosty, this distance should be doubled. When it comes to safety, you can never be too conservative.