Jiugang slogan

The brakes are not up to the level of family cars.

The braking distance of large trucks is much longer than that of family cars, and it is useless to brake suddenly in many cases.

The Federal Motor Vehicle Transportation Safety Administration of the United States has a saying: A fully loaded commercial truck travels at a speed of 65 mph, that is, 65,438+004 km/h, and the complete braking distance is 183 m ... which is equivalent to the length of two football fields. In contrast, the speed of ordinary cars is 100km/h, and the braking distance is generally around 40m;

The overload problem makes braking more difficult.

It is already difficult for a truck with normal load to brake, and it is even more difficult for an overloaded truck. Anhui University of Science and Technology has a master's thesis, The Cause Analysis and Management System Research of Highway Freight Overload under the Background of Modern Logistics. It made a survey: among 362 truck drivers, 965,438+0.765 and 438+0% were lucky, so they were overloaded. Among the people who are overloaded, 8 1.22% choose to overload in order to get more profits.

The reason is: because the freight cost is too high, it is a loss-making state. In order to survive, not overloading means losing money, and overloading may also be a gamble. There is no way.

After the truck is overloaded, the braking distance will be longer.

Master thesis of Henan Agricultural University, The Harm of Truck Overload on Highway and Its Impact on Economic Benefit.

When the speed of the truck is 30km/h, the braking distance of the truck will increase by 0.5 to 1m for every overload1t. Moreover, the braking distance increases with the increase of speed. When the speed is 50km, the braking distance is about 3 times, 3 times and 300% of the speed of 30km/h! When the speed is 90km, it will reach 10 times. So the truck driver didn't say he didn't step on the brakes. He stepped on the bottom, and the car couldn't stop immediately like a car, which means the probability of an accident is higher.

Domestic large trucks have low configuration.

Large trucks can't stop, partly because the vehicle configuration is not high enough. There is a paper in Commercial Vehicle magazine, the content of which is "Interpreting the value of the auxiliary braking system of Scania trucks".

In order to make up for the problem of insufficient braking of freight cars, auxiliary braking systems such as engine retarder, eddy current retarder and hydraulic retarder are generally installed on freight cars. Among them, the effect of hydraulic retarder is quite remarkable, and it can play a role with the brake in emergency braking to reduce the braking distance.

In fact, there are very few trucks equipped with hydraulic retarder on the road, and even less are brought by the original factory. There is a paper in Commercial Automobile magazine that the implementation of the new national standard has brought new opportunities to the hydraulic retarder market. In 20 16 years, the sales volume of hydraulic retarder was only over 1 10,000 vehicles, and the sales volume of heavy trucks was 732,900 vehicles, so the market coverage was very low.

The blind spot is too big, and some accidents you didn't see directly hit it. On the surface, it seems that the truck did hit it directly without stepping on the brakes. But it's actually because the blind spot of the big truck is too big to see. There is a paper in Jiugang Science and Technology magazine, which mentioned the solution of heavy truck blind area.

The blind field of vision of heavy trucks is one of the main causes of traffic accidents, that is, they are not stopped or seen. The blind spots of heavy trucks mainly include: the blind spots of the front, A-pillar, front wheel, rearview mirror, rear end and inner wheel difference. You see, there are more blind spots than our cars.

According to the paper of China Journal of Safety Science, "Study on the Formation Mechanism and Intersection Safety of the Right Turn Blind Zone of Freight Cars". What is the blind spot when the 6-axle truck turns right? Guess what? 40.39㎡! Equivalent to the entire right side, the entire right side of the car is "black" and invisible.

Therefore, we generally don't squeeze with big trucks. Many times, pedestrians and cars are just like ants in front of big trucks, and they are invisible at all. It's not that people don't like you today, but that they can't see you.

So, you see, there are many big trucks with slogans on the back: Please stop before turning right, please forgive me. Let the car behind us be patient. Why do people stop? Look as much as possible, and then turn around if there is no problem.

"I'd rather kill" is a rumor.

Let's put it another way. It is impossible for the driver of a big truck to "hit it instead of braking" because the cost and price of the driver's accident are also high.

First, deal with the accident without death: detain the car and detain the license plate. It means that before the accident is solved, there will be no food, no salary, no job and compensation for the delay of goods, right? This is already very serious.

And if the accident is serious, the driver may face more than just economic losses. Article 10 1 of the Road Traffic Safety Law violates the provisions of road traffic safety laws and regulations. If a major traffic accident occurs and constitutes a crime, criminal responsibility shall be investigated according to law, and the traffic administrative department of the public security organ shall revoke the motor vehicle driver's license and directly hang the tag. Moreover, according to the regulations, if 1 person is killed or seriously injured by more than 3 people, and he is fully or mainly responsible for the accident, or if more than 3 people are killed and equally responsible for the accident, he shall be sentenced to fixed-term imprisonment of not more than 3 years or criminal detention. This is very powerful.

If it causes death and does not constitute a crime, according to the Regulations on the Application and Use of Motor Vehicle Driving Licenses, it is also mandatory to downgrade and change the license, so you can't drive this thing in the future.

The root cause of frequent accidents is that the brakes can't stop.

In a word, stepping on the brakes is an instinctive reaction of human beings. When there are people and cars in front, it is impossible to go straight up. There are really very few big truck drivers who don't follow the rules and drive indiscriminately. Many friends visit my truck driver. I also chat with them in the message area.

Generally speaking, drivers are gentler, harder, more affectionate and more responsible than us. It's really not easy for me to talk about it for them here. The most fundamental reason for the frequent accidents of large trucks is that they cannot stop. There are economic and technical reasons.

Should drum brakes be eliminated?

At present, most large trucks in the market are still using drum brakes, which is of course one of the reasons why the brakes can't stop. Should the drum brake be cancelled? Why are some family cars also in use?

I want the car to brake faster. When I hit the brakes, I'll pull the handbrake, okay? Will the braking distance become shorter? Isn't there a mechanical hand brake and an electronic hand brake now? What is the difference? Which one is more suitable for us to use?