Through online search and store visit, the reporter found that Electric vehicle helmet There are many kinds of helmets, such as full helmets, 3/4 helmets, half helmets, and flip up helmets. The price ranges from ten yuan to thousands yuan, and the materials and weights are different. In random interviews on the street, the reporter found that many electric vehicle drivers did not know whether their helmets were compliant. "I only knew that the traffic police would check whether they were wearing a helmet recently, so I bought one online." Ms. Zhang, who lives in Pingshi Street, Qinhuai District, said, "It's not expensive to find the one with high sales volume!" Mr. Wang, who lives near Mochou Lake, said, "I think it should be a full helmet, but this kind of helmet is expensive and heavy, so I bought a light one at random."

Not only consumers, but also e-bike dealers have "blind spots" in their understanding of helmets. A salesperson of a famous electric car brand store admitted that the sales of helmets in the store have increased significantly recently, but when a reporter asked about the difference between helmets at different prices on the shelf, the other side seemed vague, "the more expensive the better, and the specific (difference) is also unclear.". When searching an e-commerce platform, the reporter saw that electric vehicle helmets cost thousands, and the cheapest one is only 14 yuan. The reporter randomly opened a store with high sales, and found that the customers who commented on the helmet generally paid attention to the appearance, weight, sunscreen, breathability, comfort and other characteristics of the helmet, and few people paid attention to safety performance. When the reporter asked about the material and performance of the helmet, the shopkeeper said that "it is made of ABS engineering plastics", "with quality assurance", but did not provide any product certification.  

Question:

At present, there is no national unified quality standard for electric vehicle helmets

"Common helmet shells are made of engineering plastics, fiberglass, carbon fiber and other materials." Han Kuanbao, vice president of Nanjing Electric Bicycle Industry Association, said that the more protective the materials are, the higher the price. A high-quality carbon fiber helmet can cost thousands or even tens of thousands of yuan. In addition to material differences, the coverage area of the helmet also has an important impact on safety. Full helmet has the best protective effect, but poor air permeability; 3/4 helmet gives consideration to both protection and breathability; Half helmet is easy to wear, but the ability to protect safety is poor; There is also a "lift up helmet" that can completely turn up the chin device, which is convenient to wear and has good protection.  

At present, among the helmets produced and sold, "there is no helmet dedicated to electric bicycles in a strict sense." In addition, motorcycle helmets, bicycle helmets, and skateboard sports helmets have corresponding quality or production standards, but there is no national standard for electric bicycle helmets at present.

It is understood that although some regions have launched local group standards for electric bicycle helmets, Han Kuanbao believes that the development of national industry standards specifically for electric bicycle helmets is an important way to regulate the helmet market in the future. "This standard should meet the maximum driving speed. In case of a collision, it should ensure that the cyclist is not injured," said Han Kuanbao.

At present, some electric vehicle enterprises have begun to present helmets to consumers who buy vehicles at the initiative of Nanjing Electric Bicycle Industry Association. Boss Peng of Jinling Vehicle Mall showed the helmet that he was going to give to customers with the car: engineering plastic shell, the inner layer is made of hard foam box and soft sponge material, the weight is very light, and the price is about tens of yuan. Boss Peng said that although this kind of helmet is not as strong as a motorcycle helmet costing several hundred yuan, the cushioning effect of the inner interlayer can also protect the head of an electric bicycle that is not fast, even if its shell is accidentally impacted and cracked. In addition to establishing basic safety awareness, it is particularly important to wear helmets regularly. The reporter observed on the streets of Nanjing that not all people can wear helmets in a standard way: the buckles are not fastened, the size is not appropriate, and the helmets are often worn askew. Even some citizens can't wait to take off their helmets after passing the intersection with sentries. According to the article published on the WeChat official account of "Jiangsu Police" recently, you should choose a size suitable for yourself and adjust the adjuster when wearing the helmet; The helmet shall be worn horizontally; The webbing used to fix the helmet must also have the correct fixing position.  

At the same time, the traffic police also suggested that the public, no matter what kind of helmet they bought, must meet the "3C" compulsory certification. Such helmets have reached the qualified standard in "collision energy absorption performance" and "penetration resistance performance".