How much do you know about car safety knowledge that even old drivers have misunderstood

This article is the original manuscript of Spicy Chess, the author Liu Peng, welcome to share, please indicate the source and author for reprinting

For many friends who buy a car,carCommon sense of safety is especially important. After all, this is directly related to personal safety during driving. However, many people have deep-rooted prejudices against common sense of car safety (of course, including many old drivers), which directly leads to the continuous spread of false common sense of safety.

Although a vehicle with a large deformation after a collision looks more tragic, because the vehicle has absorbed the impact energy generated by the collision during the deformation process, the damage to the occupants in the vehicle may be less. On the contrary, for the vehicle with less deformation In a vehicle, if too much collision energy is absorbed by the occupants in the car, the safety of the occupants in the car may not be guaranteed.

The deformation depends on the condition of the passenger compartment. If the A-pillar, which is related to the living space of the occupant, collapses seriously, it will be a serious safety hazard.

Misunderstanding 1:airbagThe more the safer

It's not that the more safety configurations in the car, the safer it is.The important thing is to consider whether they match each other, the most important of which isseat belt,SeatAnd the matching and optimization of occupant restraint systems such as airbags. Therefore, a large number of restraint system matching tests must be carried out before new cars are officially launched. Many people get on the car without even wearing seat belts. No amount of seat belts can guarantee safety.

Misunderstanding 2: The thicker the car, the safer

This is a misunderstanding of car safety, and the safety structure of the car body is the focus of safety design. This part of the structure assumes the functions of absorbing and dispersing collision energy and resisting deformation. The safety body is in the key parts of resisting collision (such as A-pillar, B-pillar and C-pillar).

Misunderstanding 3: When the airbag is not opened during a collision, it means unsafe

Most people will attribute the injury to the occupants in the car as the failure of the airbag to open. It is wrong to think that the failure of the airbag to open in an accident means that the vehicle is unsafe.

The airbag itself is a double-edged sword. Manufacturers need to formulate strict deployment conditions to ensure that it protects the occupants instead of harming the occupants. At present, some advanced vehicles can detect the sitting posture of the occupants, whether they are wearing seat belts, etc. If the system determines that popping out the airbag will cause damage to the occupants, even if the deceleration is large, the airbag will not pop out.

Misunderstanding 4: The higher the "star", the safer

The star evaluation results of various crash tests are a more objective manifestation of the vehicle safety level. However, the ratings of different types of models should be treated differently.

In actual traffic accidents, especially in the most common two-vehicle collision accidents, models with larger masses will have a great advantage, while models with smaller masses will share greater energy, which is determined by the momentum of the collision. And the law of conservation of kinetic energy. At this time, the star level can no longer reflect the safety of the model, and the quality of the car has become the main factor affecting safety.

Misunderstanding 5: Do not wear seat belts in the rear

In the event of an accident, the impact on the occupants in the car is very large, regardless of high speed or low speed. According to a survey data, compared with wearing seat belts, rear occupants are 7 times more likely to be thrown out of the car without wearing a seat belt, and the death rate is 4 times higher. Moreover, an occupant who does not wear a seat belt is like an unconstrained object in a collision, which is a threat not only to himself, but also to other occupants in the same vehicle.

Misunderstanding 6: After a collision, the smaller the deformation, the safer

In fact, good safety refers to maintaining the integrity of the driver’s seat as much as possible, relying on the body to absorb the energy generated by the collision, so as to achieve the purpose of protecting people, so it is necessary to use the body to fully absorb the energy generated by the collision to ensure the safety of the driver’s seat. Don't think that after a collision, a car with exaggerated deformation is unsafe. In fact, you should look at the occupant's living space after the collision. It will tell you whether it is safe or not.

Misunderstanding 7: SUV is safer than sedan

Many people think that the safety of an SUV is better than that of a car. However, a major disadvantage of SUV driving at medium and high speeds is that because of its high center of gravity, it is easier to roll over when driving in a curve, and the fatality rate of rollover is the highest, especially in places with heavy rain and snow. With the popularization of urban SUV sedan-based chassis and the extensive assembly of ESP, the safety of SUV has been greatly improved. Therefore, whether SUVs are necessarily safer than cars, in fact, the answer is not necessarily. The safety of the car still needs to consider more factors comprehensively.

Misunderstanding 8: American cars are safer than Japanese cars

It is undeniable that in order to reduce costs, Japanese cars are not as solid as American cars in terms of material strength in some locations. However, the current car safety design mainly depends on the body structure. The collapsed energy absorption and unique protection structure that Japanese cars have always emphasized can completely achieve the same high level of safety protection. This is why Japanese cars are still popular in the US market and are not lagging behind in crash tests. .

Therefore, a single assertion that American cars are safer than Japanese cars is very one-sided. When we consider car safety, we should also consider car brands and different models.