Therefore, many novice drivers pay more attention to safety configuration when buying a car, hoping to reduce risks and save lives at critical times.
The active safety configuration that can avoid accidents can be divided into active and passive configurations. Active safety configuration is: it can prevent accidents and try not to let them happen.
Passive safety configuration is: there is no way out, it happens, and how to reduce the casualties of passengers when it happens?
However, an accident is a bit like a person getting sick. It is better to take precautions and try not to get sick than to take injections and take medicine after getting sick.
So according to the idea of "prevention first", let's first look at which active security configurations are worth choosing.
Automatic emergency braking system Item 1 The active safety configuration is automatic emergency braking system, which can reduce frontal collision.
For novice friends, it is common to judge that the distance between cars is not allowed; It is inevitable that the reaction speed is slow.
The car in front suddenly slows down, or a pedestrian crosses the road, and the battery car rushes out like a ghost probe, which may not slow down in time.
AEB can remind our driver before the collision, and if the driver doesn't respond, the system will slow down the car to some extent.
Moreover, when you step on the brake again and trigger the alarm and brake at the same time, the braking force will be greater than the actual step.
It is possible to avoid collision or reduce collision speed.
It's a bit like this: a classmate is absent-minded in class, and the teacher will verbally remind him in advance: "Zhang San, Zhang San," ahem. "Right?
If it doesn't work, if it doesn't work, a chalk head will be thrown over. This AEB is a bit like that chalk head.
There is a paper in Journal of Automobile Safety and Energy Saving (development and testing of Automatic Emergency Brake (AEB) pedestrian detection system) that AEB can reduce traffic accidents by 27%.
AEB systems of different automobile companies have different effects at different speeds and in the face of different obstacles.
There is a test result of NCAP in Europe: 20 19 Corolla is 60km/h per hour, and pedestrians can brake in time when crossing the road; 20 19 golf, 45km/h, can brake in time.
You see, the speed is different. If the speed exceeds 80km/h, nothing you say can save you, and there may be a collision.
So even if there is AEB, when driving, it is not: "It doesn't matter, I will just drive casually." Not to this point.
The second active safety configuration of lane keeping system is lane keeping system, or "LKA" for short, which is to prevent cars from deviating from the lane and slipping out.
For novice friends, the control of the steering wheel is not necessarily very skilled, and there may be a situation of "painting dragons" left and right.
Just like when we first learned to ride a bike, didn't we stagger and twist left and right in an S shape? If you accidentally deviate from the lane, there may be an accident.
There is a paper in the Journal of Automobile Engineering, the lane keeping system based on artificial potential field, which says that the traffic accidents caused by lane departure account for 30% of the total traffic accidents.
You deviated and the car behind you didn't pay attention. Didn't you run into it? The lane keeping system may start to remind us before you hit the line.
If you haven't corrected the deviation, the system may control the steering wheel to some extent and let the car return to the middle.
But some friends are worried: "What if this system controls the steering wheel and I change lanes normally?"
"I urgently avoided an obstacle, and a courier box fell in front. Isn't that interfering with my operation? "
Actually, don't worry too much about this.
Tongji University has a paper "Design of lane keeping auxiliary system based on EPS", which says that the torque of the driver, the switch of the turn signal and the lateral movement of the vehicle will be considered when the vehicle changes lanes.
That is to say: if you turn on the turn signal before changing lanes, or if the driver really wants to make the car deviate from the lane, the system will not interfere with our driver's operation and can recognize it.
Different cars remind you in different ways: some "mm-hmm" steering wheel gives you a vibration; Some ring twice to call you; Some directly help you turn the steering wheel back a little.
This is because car companies have different understandings of safety.
The third active safety configuration of electronic stability control system is electronic stability control system, which can reduce the situation that the car is out of control.
This is what everyone has. When driving, the road is slippery, or the tires slip, or there are many directions. In general, it is to avoid the car from bumping left and right because of out-of-control sideslip.
It's a bit like: a cold and a fever is a minor illness. If the treatment is not correct, it may be that you have been lying in the hospital for 3 months. It is used to prevent serious diseases.
Usually used in rainy and snowy days, high and low slopes, big throttle and big brakes, crazy direction. ESP is still good.
There is also a paper in "Light Vehicle Technology". It is mentioned in "Automotive Active Safety System-Electronic Stability Program ESP" that 25% of traffic accidents that cause heavy casualties are caused by sideslip.
If you have ESP, you can reduce this situation.
For example, if your car suddenly turns to the right, ESP will quickly brake the right front wheel to suppress this tail flick.
If you don't understand it, you don't have to remember it. When you learned to ride a bike as a child, it had two auxiliary wheels. Didn't we fall down when we were unstable? That wheel will help us stick to it.
When we lean to the left, the left wheel helps us stay still. ESP only completed the action of "supporting for us" in a more complicated and advanced way.
When buying a car, the name will be different, what VSC, VSA, why?
Because ESP is not strictly the name of a function, but the exclusive trademark of Bosch, only Bosch can call it "ESP".
Therefore, other car companies have similar functions to it, but the names should be separated.
Toyota is called "VSC", Honda is called "VSA" and Porsche is called "PSM". They are all different, but their functions are similar anyway.
Kind of like what? Potatoes have different names in different places. Some are called "yam eggs", some are called "potatoes", some are called "broken eggs" and some are called "potatoes", which is actually the same thing.
Passive safety configuration that can reduce accident casualties The actual road conditions change rapidly, and only prevention can ensure safety. We can't see such things as car accident highlights, and we still need a little passive safety configuration.
The passive safety configuration of side air curtain and side air bag 1 position is side air bag and side air curtain, which can reduce casualties in side collision.
Airbags are well known, and now most cars have them, at least in the front row.
However, the name of the frontal airbag tells us that it can only deal with frontal collisions, and it can do nothing when encountering common side collisions.
This is like: light body armor can prevent bullets, but it can't prevent knife injuries. Isn't it interesting?
There is a paper in the magazine "Light Vehicle Technology", which interprets China's automobile collision standards.
In all kinds of traffic accidents in China, 1/3 is a side collision, and the fatality rate is second only to that of a frontal collision. Injury rate 1.
If we have side air curtains and side airbags, we can cushion the head and body during a crash and reduce injuries, which is still more important.
There is a paper in Shanghai Automobile magazine, which mentioned "Discussion on the design safety of automobile side air curtain structure".
In a side collision, if the deformation of the passenger compartment is not serious, the side airbag can reduce the fatality rate11%; Side airbags and head air curtains can reduce the mortality rate by 45%, and the head is still more important.
Automatic collision distress system
The second passive safety configuration is the collision automatic distress system, which can shorten the rescue time.
If there is an unfortunate car accident, you may faint after the collision, or you can't lift your hands. You can't call 120 or 1 10 for help, and you may miss the best rescue time.
It's like: I was only fractured at that time, and it wasn't difficult to treat, but after a long time, the tissue was necrotic and I had to amputate.
When the car collides with "bong" or the airbag pops out, the collision automatic distress system can automatically contact the rescue center.
This is better than I expected and can greatly shorten the rescue time.
Some advanced cars, even where they are, will send out positioning signals.
There is a paper in the journal Telecommunication Network Technology, which is mentioned in the Vehicle Emergency Rescue Call System.
It is possible to save more than 40% of the rescue time after road traffic accidents, which is almost half.
And this system usually reads the lights in the front row, and there will be a red button like "SOS" where you look up.
If you suddenly get sick in the car, you can also use this button to call for help.
My heart hurts, and I feel dizzy. Press it to say again.
Safety configuration can reduce accidents and casualties. Generally speaking, these active and passive safety configurations can effectively reduce accidents and casualties at the critical moment of accidents.
Therefore, when a novice friend buys a car, these configurations, if any, are cost-effective, within the budget and worth choosing.
Leather, or later? It's best to replace the skylight with an airbag. I think so myself.