Shulou(Shulou.com)11/24 Report--

Do I have to wear a helmet to ride a motorcycle? Of course I do!

What about riding a battery bike? You have to wear it!

What about the bike? This. Like you only wear it when you're off-road or in a race?

Actually this is not so.

Compared with "iron-clad" cars, "meat-clad" bicycles, motorcycles and battery cars can hardly provide any protection for riders in the event of an accident.

Without protective gear, Qianjun impact will have a direct effect on the human body.

If you wear inappropriate protective gear, the consequences may be even worse: it only increases the courage of the rider, but does not provide commensurate protection.

This is a tweet that will kill you: please wear a helmet and a proper helmet when riding.

Wear a life-saving bicycle helmet part of the bike author: Sophia

Is it safe to ride a bike?

When cycling in cities, the average speed is 10 to 15 kilometers per hour, while road bikes ride at a speed of about 20 kilometers per hour, while in downhill and sprint, the speed can soar to 50 to 70 kilometers per hour, which is equivalent to a car driven in the city.

And objectively speaking, even if you ride your bike slowly and don't hit others, others may hit themselves when they drive.

The car has airbags and seat belts. How about you?

In 2020, the U.S. Consumer Product Safety Commission reported that 1/3 of those injured in non-fatal cycling accidents were head injuries; of the 80000 first aid cases related to cycling, head injuries accounted for the majority.

In the crowded and high-speed cycling, it is often a big fall, GCN.

I have had two serious accidents while cycling.

On one occasion, the downhill speed got out of control and hit a tree; on the other hand, he was knocked down by another rider and fell heavily to the ground.

In both accidents, I suffered an obvious blow to the head, and it would be hard to imagine the consequences without wearing a helmet.

In the cycling circle, the novice ignorant is often fearless, and the more experienced he is, the more he is in awe of life. Now when I see a rider riding without a helmet, I will catch up and tell ta the importance of the helmet.

Here, I would also like to remind you that when you ride a bike, you must wear a helmet and a helmet that suits you.

Adhere to the certification standards to choose a qualified life-saving helmet, the easiest way is to look at certification. You can find these signs on the helmet manual and certificate.

GB 24429 Certification for domestic helmets

European helmet looks at CE and EN1078 certification

North American helmet look at CPSC certification

There are also more stringent German and Swiss TUV and SGS certifications.

In addition, bicycle helmets also have a useful life, and can not be used for a lifetime.

Even if the helmet is not bumped and damaged, there will be cracks that are hard to see with the naked eye, as well as damage from the wind, the sun and sweat. It is recommended that the bicycle helmet be replaced every 3 years or so.

Generally speaking, bicycle helmets can be divided into road bike helmets, mountain bike helmets, commuter leisure helmets and children's helmets.

There are two kinds of road car helmets.

One is portable, with many holes and good air permeability. If there is a lot of climbing in the cycling route, or if you sweat easily, it is suitable for portable road car helmets.

The other is pneumatic, which is more aerodynamic, has few vents and produces little resistance when riding. Therefore, this kind of helmet is mainly used in races, allowing riders to ride faster.

There are three kinds of mountain bike helmets, namely, downhill helmet, cross-country helmet and endurance helmet. Because mountain biking is more dangerous, these helmets provide more protection and look more like motorcycle helmets.

Commuter helmets usually have brims to protect the eyes from the sun. For most people who commute in urban areas, this helmet is enough.

Children's helmets are naturally for children, with a small size and better protection for the back of the head.

One thing to pay special attention to: the regulations on the implementation of the Road Traffic Safety Law stipulate that you cannot ride a bike until you have reached the age of 12. Children can ride their bikes in the community and in the park.

How to calculate how to wear a good helmet with a suitable helmet, you must wear it correctly in order to play a protective role.

First of all, the front of the helmet should not be raised or drooped, but should be kept at a distance from the eyes and flush with the eyebrows.

Many girls wear helmets for fear of pressing bangs, so it is inappropriate to wear helmets on the upper side.

Second, be sure to tie the bandage on your chin so that there is room for two fingers under the belt and under your chin.

Finally, tighten the knob on the back of the helmet and check it from time to time while riding to make the helmet fit comfortably and firmly to the head.

The knob behind the bicycle helmet can fine-tune the tightness of the helmet (Taobao screenshot motorcycle helmet needs to pay more attention to this part of the author: Kedou

Compared with other common means of transportation, motorcycles are more dangerous. In all motorcycle accidents, the mortality rate is as high as 59.6% [1].

In motorcycle accidents, the head is the most common site of injury, and almost all victims have head injuries; about 80% of those who die unfortunately die of craniocerebral injuries.

If a motorcycle collides with an obstacle at a speed of 40 kilometers per hour, it will produce an impact of 2000 to 6000 kilograms-the human body can withstand about 100kg, and the rest will need a helmet to bear and cushion [2]. Helmets can even be used as a tool to stop bleeding when the rider has a head trauma.

The matters needing attention for buying life-saving motorcycle helmets are as follows.

To determine the safety standard, first look at the safety certification standard.

Domestic motorcycle helmets need to meet the national standard "Motorcycle crew helmets".

European helmets need to be ECE certified

SNE certification is required for American-made helmets

TIS certification is required for Japanese-made helmets.

According to the relevant standards, motorcycle helmets are divided into three types: full helmets, Class A semi-helmets and Class B semi-helmets [3].

Three styles of helmets? reference [3] full helmets are highly encapsulated and have the best protective effect on the rider's head. In many dangerous motorcycle races, riders must wear full helmets.

Its disadvantages are also obvious: poor air permeability, especially when the car is slow or parking, it is muggy.

Class B semi-helmets look like a construction worker's helmet, small and breathable, but cannot protect the rider's face, chin and head, and the helmet may be thrown out in the event of an accident.

The advantages and disadvantages of Class A semi-helmets are between the first two.

Helmets are available in different sizes, so be sure to try them on first. If it feels like the head fits perfectly into the helmet lining, the face and jaw are fixed, and the ears are not badly pressed, then the helmet size is basically appropriate.

If you have enough money, it's better to customize the helmet according to your own head size.

Other people's helmets and online shopping helmets are likely to have problems of inappropriate size.

The helmet is too small to oppress the head, and if you wear it for a long time, you may get dizzy and affect your riding.

On the other hand, too large helmets will keep shaking while driving, affecting the field of vision and are more likely to fall off in a collision accident.

Helmets also have a shelf life. Helmets have a safe service life.

Helmet shell, cushioning interlayer, lining, even if the surface is intact without bumping, the material will gradually aging, strength and hardness ductility and other characteristics will become worse, the head protection is also losing.

Generally speaking, it is time for a motorcycle helmet to be replaced after three or five years of use.

In addition, the more expensive the helmet, the shorter its safe life.

The helmet of the battery car, press the motorcycle to come to this part author: Kedou

Because of their low price and no need for a driver's license, battery cars are more common than motorcycles.

According to the safety technical specification for electric bicycles, the speed of battery cars can not exceed 25 kilometers per hour. However, after modification, the speed of the battery car can double, even about the same as that of a motorcycle.

Although we do not encourage retrofitting battery cars to improve speed, from the current situation, the helmets worn by battery cars should still be in accordance with the standards of motorcycle helmets.

On the issue of battery car helmets, we need to say a little more.

Some battery riders decorate their helmets, such as animal ears, bows, bamboo dragonflies and so on. Although the helmet suddenly becomes very cute, there is no harm to the protective effect of the helmet, but such decoration will distract the attention of passers-by and drivers, and there are also security risks.

Just decorate the helmet a little bit, it's too ostentatious.

Decorated like this, aren't you afraid that the rider behind you will overtake and look at you and fall in front of you? The screenshot of Taobao believes that many people will make excuses for not wearing a helmet, such as "too stuffy", "ruining my hairstyle", "I haven't worn a helmet for so many years, and I've never had an accident."

But whether you ride a bike, motorcycle or battery car, wearing a helmet is like buying accident insurance-you will try not to let an accident happen, but if there is an accident, you will be grateful for the right decision.

reference

Yu Chunjun, Wang Changjun. Research on the relationship between Motorcycle helmet and Motorcycle Traffic accident [J]. China Science and Technology of production Safety, 2009, 5 (2): 76-80.

[2] Motorcycle Technology, 2004102, p. 35

[3] GB 811-2010 motorcycle crew helmet

[4] https://std.samr.gov.cn/gb/search/gbDetailed?id=A60EC3D9A25D8B56E05397BE0A0AE78F

[5] GB 24429-2009 Sports helmets-Safety requirements and test methods for bicycles, skateboards, roller skating sports helmets

This article comes from the official account of Wechat: fruit Shell (ID:Guokr42), author: Sophia, Kedou, Editor: Li Xiaokui

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