What is the safe following distance on highways?

[SawyerDella]

When the speed exceeds 100 kilometers per hour, you should maintain a distance of more than 100 meters from the vehicle in front in the same lane. When the speed is below 100 kilometers per hour, the distance from the vehicle in front can be appropriately shortened, but the minimum distance should not be less than 50 meters. Here are some precautions regarding following distance: Avoid following vehicles that block your view: Try not to follow vehicles that obstruct your line of sight. If you are behind a large vehicle, a significant area ahead is blocked, making it difficult to know if there are vehicles in the blind spot. If an accident occurs in the blind spot, you will have very little time to react. Use intermittent braking to alert the vehicle behind: When braking on the highway, always use intermittent braking to alert the following vehicle. Some drivers may become fatigued during high-speed following and might mistake the braking ahead for width indicator lights or other lights. Using intermittent braking causes the high-mounted brake light to flash, making it more noticeable and easier for the following vehicle to detect promptly.

[PiperLynn]

The other day while driving on the highway, I was thinking about the issue of following distance. Actually, the core of maintaining distance is to leave yourself enough reaction time. Generally, when driving at 100 kilometers per hour, keeping about 50 meters is quite safe. I prefer a simple method: watch the car ahead pass a road marker, then start counting seconds. If my car reaches that point 2 seconds later, it means the distance is sufficient. In heavy rain or fog, I extend it to over 4 seconds to avoid rear-ending if the car ahead suddenly brakes. This is about safety—don’t push your luck by following too closely, or you might end up paying for repairs and wasting time. Speeds change quickly on highways, especially during weekend rush hours with heavy traffic. It’s better to leave extra space and not cause congestion than to risk a major accident. Remember, safe driving isn’t about racing speed—it’s about racing wisdom.

[MadelynLynn]

When I first got my driver's license, I was always a bit nervous driving on the highway. Later, I figured out the trick for maintaining a safe following distance. The basic rule is to divide your speed by 2 – for example, at 80 km/h, keep about 40 meters apart. I often use songs playing in the car as a timer – counting two seconds to the beat of a fast song, which roughly equals a safe interval. Never get lazy and tailgate the car in front; if they brake suddenly, you'll be in trouble. I almost rear-ended someone once, but luckily I had kept my distance. In rainy or snowy conditions when the road is slippery and braking distances are longer, I add an extra 30% space. For new drivers, I recommend practicing by checking the rearview mirror more often – don’t worry about being cut off, safety comes first. Stay calm on the highway, and you'll get used to it over time.

[AylaFitz]

When it comes to following distance on highways, I believe the standard is to ensure sufficient braking buffer. Generally, when driving above 60 km/h, the distance should be at least 30 meters. I use the taillights of the car in front as a reference—if I can still clearly see the details of the taillights after the car ahead goes around a curve, then the distance is good. At higher speeds, the risk increases, and most rear-end collisions happen due to insufficient distance. In tunnels or on slopes, I widen the gap appropriately because obstructed visibility can lead to misjudgment. The key is to anticipate road conditions, avoid rushing, and stay focused—no distractions like checking phones. Once this habit is formed, driving becomes much safer, and the accident rate drops significantly.