The car horn is very noisy.

Little friends must have encountered the situation that drivers suffering from road rage frequently honk their horns to urge you to give way! The following cars are for friends all over the country. If the car horn is noisy, unlock the new posture quickly!

Loud car horn: introduction.

It refers to the phenomenon of environmental noise pollution that exceeds the national environmental noise emission standard and interferes with the normal life, work and study of others, as stipulated in the Law of People's Republic of China (PRC) on the Prevention and Control of Environmental Noise Pollution. The decibel of sound is the unit of sound pressure level, recorded as decibel. Used to indicate the size of the sound. The Code for Urban Regional Noise in People's Republic of China (PRC) clearly stipulates the maximum limits of environmental noise in five urban areas:

Sanatorium area, senior villa area, senior hotel area, 50dB during the day and 40dB at night, the area mainly inhabited and informed by the authorities, 55dB during the day and 45dB at night, the residential, commercial and industrial mixed area, 60dB during the day, 50dB during the night in the industrial area, 65dB during the day and 55dB at night, and the roads in the city drive to the areas on both sides of main roads, inland waterways and railway roads, 70dB during the day and 55dB at night (.

According to national standards, the noise in residential areas should not exceed 50 decibels during the day and should be lower than 45 decibels at night. If it exceeds this standard, it will cause harm to the human body. So, what is the noise standard of indoor environment? The fourth paragraph of Article 5 of the National Urban Environmental Noise Measurement Method stipulates that when measuring noise indoors, the indoor noise limit value is lower than the standard value of the area where it is located 10dB.

Noise is very harmful to physical and mental health.

1. Strong noise can cause ear discomfort, such as tinnitus, earache and hearing loss. According to the measurement, noise exceeding 1 15 decibels can also cause deafness. According to clinical medical statistics, 50% people will be deaf if they live in a noisy environment above 80 decibels. Medical experts believe that family noise is one of the reasons for children's deafness.

2. Reduce work efficiency. The study found that if the noise exceeds 85 decibels, people will feel upset, and everyone will feel noisy, so they can't concentrate on their work, thus reducing work efficiency.

3. The cardiovascular system is damaged. Noise is a risk factor for cardiovascular diseases, which will accelerate heart aging and increase the incidence of myocardial infarction. Medical experts through human and animal experiments show that long-term exposure to noise will increase adrenal secretion in the body, which will increase blood pressure. People who live in noise with an average of 70 decibels for a long time can increase the incidence of myocardial infarction by about 30%, especially at night. The survey found that the incidence of myocardial infarction increased by about 30% among the residents living beside the expressway. A survey of110/textile female workers showed that the incidence of hypertension was 7.2%, and that of people exposed to 100 decibel noise was 15.2%.

4. Noise can also lead to nervous system dysfunction, mental disorders, endocrine disorders, and even increase the accident rate. Noisy working environment can make people feel dizzy, headache, insomnia, dreaminess, general fatigue, memory loss, fear, irritability, inferiority and even insanity. In Japan, there have been cases of insanity and suicide caused by train noise.

5. Disturb rest and sleep. Rest and sleep are the necessary conditions for everyone to eliminate fatigue, restore physical strength and keep healthy. But noise makes it difficult for people to rest and fall asleep. When people can't sleep after tossing and turning, they will feel nervous, short of breath, rapid pulse and excited brain, and they will feel tired or weak limbs the next day. Then it will be related to work and study. Over time, you will get neurasthenia, and the symptoms are insomnia, tinnitus and fatigue.

6. Damage to women's physiological function. When women are threatened by noise, there will be irregular menstruation, miscarriage and premature delivery, which will affect female sexual dysfunction and menstrual disorder and increase the abortion rate. Experts conducted a three-year systematic survey in seven regions including Harbin, Beijing and Changchun. The results show that noise not only makes female workers suffer from noise deafness, but also has a bad relationship with their menstruation and fertility. In addition, it will also affect the abortion and premature delivery of pregnant women, and even cause teratogenesis. Foreign countries have investigated the general situation of abortion and premature delivery of pregnant women in a certain area, and found that they live around an airport, and the culprit is the huge noise generated when the plane takes off and lands.

7. Noise is more harmful to children's physical and mental health. Because the child is still immature, all tissues and organs are very delicate and fragile. Noise can damage the hearing organs, resulting in hearing loss or hearing loss, whether it is fetus or newborn. According to statistics, there are more than 70 million deaf people in the world today, and a considerable part of them are caused by noise. Experts show that indoor noise at home is the key reason for children's deafness. If you live in noise above 85 decibels, the deaf can reach 5%.

8. Noise damage to vision. Everyone only knows that noise is related to hearing, but I think noise is also related to vision. Experiments show that when the noise intensity reaches 90 decibels, the sensitivity of human visual cells decreases and the reaction time to identify weak light is prolonged. When the noise reaches 95 decibels, 40% people have dilated pupils and blurred vision. When the noise reaches 1 15 dB, the adaptation of most people's eyes to brightness is basically weakened to varying degrees. Therefore, people exposed to noise for a long time are prone to eye fatigue, eye pain, dizziness, tears and other eye injuries. At the same time, noise can also make color vision and visual field abnormal. The survey found that noise reduced the vision of red, blue and white by 80%. Therefore, drivers should prevent stereo noise interference, otherwise it is easy to cause traffic accidents.

At the beginning, if you don't pay attention, it has a lot to do with others. Although playing the trumpet seems frivolous, it may have serious consequences. Start from yourself and pay attention to the dribs and drabs in the driving process! The horn of the car makes noise. This is the end of the introduction to automobile editing.

Million car purchase subsidy