The rules grouped five types of zones, namely quiet areas, residential areas, mixed zones, commercial zones and industrial zones. Then, with a few exceptions, the permissible noise levels were set, which applied both day and night. VARIOUS OTHER PHYSICAL OR MENTAL LOSSES: Exposure to loud sounds can lead to violent behavior. Constant noise nearby can also cause headaches; Make people tense and anxious and disrupt emotional balance. Noise pollution can distort the natural tempo of our speech. People may have difficulty speaking. In general, explosive noise generated by car traffic and aircraft tends to cause such problems. In industrial areas where the highest noise levels are allowed, the limit is 75 decibels during the day and 70 decibels at night. In the explanation of the rules, it was mentioned that the hours between 6 a.m. and 9 p.m.

are considered daytime, while the remaining hours are considered night. Under Schedule 2, a separate area for vehicle noise has been established and the use of horns is prohibited in areas designated as quiet areas. The rules specify that any person may address complaints of violation of the rule orally, by telephone or in writing to the competent authorities. It specifies that officials authorized under the Environmental Protection Act 1995 may, under this rule, enter an installation and confiscate any noise-generating instrument. “The maximum noise pollution comes from hydraulic horns emanating from vehicles. If the Ministry of Environment coordinates with the Dhaka Metropolitan Police Transport Authority to implement laws and rules against noise pollution, this threat will decrease to a tolerable level in Dhaka,” Kamruzzaman said. The regulations set permissible noise levels for day and night in five types of zones: quiet zones, residential areas, mixed zones, commercial areas and industrial zones. Silent areas include hospitals, educational institutions, offices and similar facilities and their surroundings of 100 meters. Silent zones are areas where noise levels must be kept lowest (50 decibels during the day and 40 decibels at night); The permissible sound level for residential areas is 55 decibels during the day and 45 decibels at night. In industrial areas where the highest noise levels are allowed, the limit is 75 decibels during the day and 70 decibels at night.

According to the rules, the hours between 6 a.m. and 9 p.m. are considered daytime and the remaining hours are considered night. A separate area is prescribed for vehicle noise in Schedule 2 of the Rules, and the use of horns is completely prohibited in areas designated as quiet areas. n Duration: The length of time you are exposed to noise. United News of Bangladesh reports that the Ministry of Environment has designated three areas as silent zones. Two are near hospitals and the other around a law school. According to the 2006 noise pollution control rules, horns are not allowed in quiet areas. Fines range from 5,000 Bangladeshi taka or about $58.40 for the first offense to 10,000 Bangladeshi taka or $116.80 for the second offense, with a possible prison sentence. Studies show that at least 45 areas of Dhaka city are extremely polluted by noise. According to a recent study, the average noise level is 80-110 dB in the best areas of Dhaka such as Farmgate, Karwan Bazar, Shahbagh, Gabtoli and Mohakhali Bus Terminal.

“Because of noise pollution, people get tired and lose their effectiveness. They also can`t focus on their work,” said Pran Gopal, a senior otolaryngologist in the country. Mobin Uddin from Mirpur, Dhaka, said: “There could be a law to control noise pollution as we have heard that traffic police in the city should not honk. However, I have no idea if there is any law other than noise caused by microphones or loud music, etc.” Scientific studies show that noise pollution above 120 decibels can cause many harmful biochemical changes. Prolonged exposure to high levels of noise leads to fatigue, changes in circulation, high blood pressure and changes in breathing, hearing loss, or even complete hearing loss. Although people suffer from hearing problems caused by noise pollution on a large scale, a large part of the population knows very little about the standard of permissible noise levels and the existing rule that regulates the levels. OCCUPATIONAL HEALTH RISK: Occupational health risk has become one of the most important problems in the modern industrial workplace. A recent study shows that millions of workers around the world are exposed to noise levels every year that put their hearing at risk.

n CARDIOVASCULAR DISEASES: A noisy environment can be a major source of heart problems. A recent study shows that high loudness causes a dramatic increase in blood pressure because noise levels narrow the arteries. It also increases the disruption of blood flow and the number of heartbeats per minute. The study also shows that the heart rate of people who live in a noisy environment is higher than that of people who live in a less noisy environment. These sudden abnormal changes in the blood increase the likelihood of cardiovascular disease in the long term. The study also found that about 11.7 percent of Bangladesh`s population has lost their hearing due to noise pollution. The WHO has identified noise pollution as an underestimated threat that can cause hearing loss, cardiovascular problems, cognitive impairment, stress and depression, etc. In the fight against noise pollution, WHO has recommended three principles: the precautionary principle, the polluter pays principle and the prevention principle. This study found that about 11.7% of the country`s population had lost their hearing due to noise pollution.

According to the report, the noise level during the day was above 120 dB in Gabtoli, Arambagh Junction, Gulshan-2 Crossing, Gulistan Crossing, Mirpur 10 Crossing, Banglamotor, New Market, Mascot Plaza of Uttara, Jagannath University and other areas. Among the 70 points, the lowest noise level was measured at 99.6 dB during the day and 43.7 dB at night on Uttara-14 road-18. The highest noise level recorded at Farmgate was 130.2 dB during the day and the lowest was 65.7 dB at night. It has also been found that 500 to 1,000 vehicles in Dhaka honk their horns at the same time, even when stuck in traffic jams. If the ear is exposed to extremely loud noises (more than 100 dB) for an extended period of time, it can cause irreparable damage to our ear. These sounds can damage sensitive structures in the inner ear and cause noise-induced hearing loss (NIHL), which can occur immediately or take a long time to become visible. But the louder the sound, the shorter the time taken by NIHL. It can be temporary or permanent and it can affect one or both ears. In this case, victims usually cannot understand when talking to each other, especially on the phone or in a noisy environment. He said the environment department should coordinate with the city`s transportation department to check vehicle noise pollution. Having a noise protection law is one thing.

The Bangladesh law was passed in 2006. It is more difficult to enforce them. Perhaps the most important fact about noise pollution in Bangladesh is our retroactive rules and regulations, poor monitoring system, and poor implementation policy. Therefore, a well-thought-out noise protection policy is the order of the day. It is also high time for the government to take significant steps to update existing noise legislation in 2006. According to Professor Ahmad Kamruzzaman Majumder, Dean of the Faculty of Science at Stamford University in Bangladesh and founding president of the Centre for Air Pollution Studies, the top five sources of noise pollution are vehicles, construction sites, industry and factories, social, religious and political programmes, and households. In June 2017, the Ministry of Environment conducted a survey entitled “Bibhagio Shohorer Shobder Matra Porimap Bishoyok Jorip Prortibedon” to measure noise pollution and raise public awareness of its legislation. Noise protection legislation and policy can only be established and successfully implemented if basic knowledge and background documents are available to the general public, including authorities/administrations. It is therefore necessary to include noise in school curricula and to establish scientific institutes for the study of acoustics and noise reduction. The dissemination of information on noise reduction to the mass population is a public education and awareness issue.

Although noise and its management are not identified in any of the 17 Sustainable Development Goals (SDGs), noise is a problem that cuts across almost all goals. From an SDG perspective, there is scientific evidence that failure to address noise pollution is a significant challenge to achieving these goals. They also blamed the population`s lack of awareness of the city`s noise pollution, which has severely affected people`s hearts, brains and hearing abilities. In some places, the noise level is twice as high and sometimes three times higher than what is allowed.