We all know our country’s highways, the current maximum speed limit is 120 kilometers. With the economic development in recent years, everyone has more and more cars, and the performance of the cars is getting better and better. Many friends have called for the speed limit of the expressway to be adjusted higher because it feels 120 kilometers. The speed limit is not strong enough to drive, so why the maximum speed limit of our country’s highway is 120 kilometers?
The first point is the most direct for safety considerations, because the faster the speed, the more serious the loss after the accident. According to the research of the transportation department, the fatality rate is 100% when the speed exceeds 160 kilometers per hour, so the speed limit It is one of the most direct and effective measures to ensure safety. In fact, many countries around the world are implementing speed limits on expressways. At present, only some expressways in Germany have no speed limits. Other countries basically have speed limits, and most countries are basically 120 kilometers and 120 kilometers. The following, including the United States, where we think the car culture is very mature, also have a speed limit of 120 kilometers, while some European countries, such as the United Kingdom and Sweden, even have a speed limit of 110 kilometers, which is lower than ours. So how did our country get the data of 120 kilometers speed limit? Was it the decision to limit the speed of 120 kilometers with this shot? Because most countries in the world have a speed limit of 120 kilometers, just follow everyone's speed limit of 120 kilometers. This is the most reliable approach. But in fact, the speed limit data is calculated by our country's transportation department based on the data of car accidents over the years.
Second, the reason for the maximum speed limit of 120 kilometers has a lot to do with our road environment. The higher the speed limit of the expressway, the higher the requirements for the infrastructure of the expressway. The grade of the road surface, the strength of the road surface and the strength of the road guardrail, etc., are related to this series of things. Especially in the past few years, when our country was building roads, many of them used loans to repair roads. Since the funds for road repairs are relatively tight, when roads are being built, if the speed limit level of expressways is to be increased, it means expressways. The investment will double upwards. From the analysis of the economic cost of road construction and use, the speed limit will not be worthwhile to go upwards, so the maximum is set at 120 kilometers. It is precisely because of this factor that many non-trunk expressways in our country have a speed limit of 100 kilometers.
The third point, although our current performance of small cars is getting better and faster, but in addition to small cars running on the highway, there are a large number of trucks, and the speed of trucks can not run. , Even some trucks have a limit speed of 120 kilometers. If the speed limit is increased blindly without diverting large and small vehicles, the probability of accidents on the highway will greatly increase.
The fourth point is from the environmental protection point of view, because the faster the speed of the car, the drag coefficient will increase exponentially. Last time Brother Miao also told you when talking about economic speed, at the speed of 100 kilometers per hour and 120 kilometers per hour. At that time, the difference in the fuel consumption of the car was quite large, so from the perspective of environmental protection and economy, the speed limit of 120 kilometers is a more appropriate value.
The last point, a very important reason why the speed limit is 120 kilometers and cannot be easily increased, is our current driver factor, 120 kilometers per hour on the highway can advance 30 meters per second, which means that you follow the car ahead If the distance is 100 meters, if the vehicle in front has an accident, it is very likely to cause a rear-end collision within 3-5 seconds. In such a short time, most people will not be able to respond at all, and the quality of our current drivers has not been able to keep up. At this time, if you release the speed limit, those drivers who have been driving slowly on the first lane for a long time on the highway and those who park at will on the highway, plus the release of the speed limit, may lead to more changes. Serious traffic accidents, so our country’s current highway speed limit of 120 kilometers is calculated based on the above factors.
But with the development of the economy, as our requirements for efficiency are getting higher and higher, some highways with higher speed limits will inevitably appear in the future. In fact, then again, if we really want to increase the speed limit of the expressway to the unlimited speed we hope, from my personal point of view, I will not even dare to drive on the high speed. If you are different about the highway speed limitWhat's your opinion?
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-