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

[VonDaniel]

When the speed exceeds 100 km/h, a distance of more than 100 meters should be maintained from the vehicle in front in the same lane. 1. When the speed is below 100 km/h: The distance from the vehicle in front in the same lane can be appropriately reduced, but the minimum distance should not be less than 50 meters. 2. Under low visibility weather conditions, the following regulations should be observed: When visibility is less than 200 meters, turn on fog lights, low beam headlights, position lights, and front and rear position lights. The speed should not exceed 60 km/h, and a distance of more than 100 meters should be maintained from the vehicle in front in the same lane. When visibility is less than 100 meters, turn on fog lights, low beam headlights, position lights, front and rear position lights, and hazard warning flashers. The speed should not exceed 40 km/h, and a distance of more than 50 meters should be maintained from the vehicle in front in the same lane. When visibility is less than 50 meters, turn on fog lights, low beam headlights, position lights, front and rear position lights, and hazard warning flashers. The speed should not exceed 20 km/h, and exit the highway as soon as possible from the nearest exit.

[LeBennett]

I remember my driving instructor said that on the highway, if you exceed 100 km/h, the following distance should be at least 100 meters. I usually use streetlight poles as a reference—each gap between two poles is about 50 meters, so I make sure to keep a two-pole distance for safety. Once on a rainy day, I followed too closely on the highway and almost rear-ended the car ahead; luckily, I eased off the throttle in time to avoid it. A tire blowout or sudden braking can happen in an instant, so keeping 100 meters gives you enough reaction time. Now, on long trips, I deliberately reduce speed to maintain a safe distance—I’d rather arrive late than take risks. I always keep a warning triangle in the trunk just in case of emergencies.

[MacAbigail]

On the highway, I use the two-second rule to judge the distance: I pick a fixed reference point, and after the car in front passes it, I start counting '1001, 1002.' If I haven't reached the reference point by the time I finish counting, it's considered safe. At 100 km/h, the braking distance is 70 meters, plus another 30 meters for the 1-second reaction time, making 100 meters the minimum standard. After upgrading to semi-slick tires, I found the braking distance can be reduced by 10%, but for ordinary drivers, it's still safer to maintain 100 meters. If I see a car following too closely in the rearview mirror, I lightly tap the brakes to remind them. If that doesn't work, I change lanes to let them pass. When it comes to safety, don't worry about others thinking you're too slow.

[BellaAnn]

From a physics perspective, driving at 100 km/h equals covering 28 meters per second. With an average human reaction time of 0.8 seconds, the car would have already traveled 22 meters. The braking distance for an ordinary sedan starts at 50 meters, and increases by 30% in rainy conditions. Calculating this, leaving 100 meters is already considered extreme driving. Once, I was following too closely in a tunnel when the car ahead suddenly dropped a cardboard box; I had to swerve sharply and nearly scraped the guardrail. Now, I maintain at least 150 meters behind large trucks—they have bigger blind spots and slower braking. When driving in a convoy, I follow the light trail of the preceding vehicle, but I always make sure I can see the taillights of at least three cars ahead.

[MiaLynn]

Adjust flexibly to different road conditions: 100 meters is just enough on dry roads, while it should be increased to 150 meters in rainy weather. Extra caution is needed when driving at night. Once, I encountered dense fog on the highway at midnight and couldn't see anything beyond 50 meters. I immediately turned on the hazard lights and reduced speed to 60 km/h. Be especially wary of truck convoys, as they make large lane changes. Here’s a practical tip: when navigation alerts you to accident-prone sections, preset the cruise control distance to the maximum in advance. Although onboard radar can measure distance, don’t rely entirely on electronic devices, as they can misjudge under reflective surfaces or strong light.

[StLucy]

Only after experiencing several close calls did I truly understand the importance of maintaining a safe distance. Last year on the Shanghai-Hangzhou Expressway, debris flew from a tire blowout of the car ahead, but the 80-meter gap allowed me to swerve safely. During my novice days, I rear-ended someone, and the insurance company mentioned that a 100 km/h collision typically incurs repair costs starting at 20,000 yuan. Now on highways, I pay attention to the frequency of brake light changes from the car ahead—frequent taps indicate complex road conditions. On steep slopes, I downshift early to avoid overheating the brakes from continuous use. It's advisable to check tire pressure every two hours at rest stops—a mere 0.5 difference can affect braking distance.