As we all know, China's legal maximum speed limit is 120km/h, and even if it is fast, it is overspeed, but the bottom of the speedometer on the dashboard of most family cars is much higher than China's legal speed limit, and it is casually marked to 220km/h, and the maximum value of the speedometer is set to 240, 260km/h. It is also a big catch.
This causes the speedometer to have most of the scale is not needed at all, may be when the car is scrapped, the owner has not seen the pointer pointing to the bottom of the speedometer. So why set it up this way? What is the reason for this?
* Why is the Highway limited to 120Km/h in China?
Article 78 of the Mainland's Road Traffic Safety Law stipulates that "the maximum speed indicated by the highway speed limit sign shall not exceed 120 kilometers per hour", which shows that the speed limit of 120 km/h is legally established. What is the reason for this? There are two key reasons:
1. Human factors
We know that the body's reaction time is limited and cannot react in time the moment a problem is discovered. If a situation suddenly occurs 100 meters away, you have 3 seconds of reaction time at 120km/h and 2.2 seconds of reaction time at 160km/h. Moreover, after you react, the brakes also need to glide for a long distance, and the braking distance of the car is also a reference for judging the safety status of the car. Therefore, 100-120km/h is the best combination of motor vehicle performance, speed and safety.
2. The actual situation of the road
The high-speed speed limit of 120km/h is not set casually, and it is also related to the road conditions on the mainland. For example, the friction coefficient of the road surface, the width of the lane, the strength of the collision barrier, the flatness of the road surface, the size of the road signs and other factors are all values obtained by combining these aspects. If you want to increase the speed of the road, you must re-modify the existing road, which is very costly.
* Why is the top speed of the dashboard 260Km/h?
So since more than 120km/h is not safe, why don't car companies lock the top speed at 120km/h when producing cars, so is it safer? Why is the bottom of the timetable on the instrument panel marked to 260Km/h?
1. Driving experience
Generally speaking, if the top speed of a car can only reach 120km/h, its starting and acceleration will be relatively slow, the power will be obviously insufficient, and the driving experience will be poor. However, if the top speed is set to 260km/h, the maneuverable space is increased and the driving process will be more comfortable.
2. Power reserve to deal with unexpected situations
Although the maximum speed limit of the high speed is 120km/h, it does not rule out the need for short-term acceleration and other special circumstances, if both vehicles are driving at a maximum speed of 120km/h, it is impossible to complete the overtaking. Therefore, having a stronger power reserve can cope with unexpected situations during driving and ensure road safety.
3. The brand's own strength
In recent years, car brands have fallen into "inner rolls", which naturally includes power performance. Car companies will upgrade their power according to market demand, body positioning, etc., such as a million-dollar performance model, equipped with a V8 engine can achieve 300km/h, why do you want to do 260km/h? It can be seen that power performance is one of the key points of competition between various car brands, and of course, it is also an important measure for consumers to buy cars.
Although since April this year, according to the Ministry of Public Security's newly revised "Measures for the Administration of Scoring Points for Road Traffic Safety Violations", "speeding below 20%" is not deducted, that is to say, according to the current maximum speed limit value of 120Km/h in the high-speed section, the high-speed section can be driven up to 143Km/h after the implementation of the new regulations, and no points will be deducted, but Xiaobian still recommends that everyone still strictly abide by the traffic regulations, it is best not to speed up, blindly pursue speed and passion, and always keep in mind "safe travel, safety first"!