Most of Japan's highways were built in 1956. 60 years ago today. Highway means there will be no traffic signals. The car will run at super speed.
Residents on both sides of the road were in trouble. He sat down to complain to the government - "I can't sleep because of the noise. Clear the road".
Will the complaint come to Dalei?
Perman will not come?
It is not easy to move the road. The government called the intellectuals. Asked for advice. The purpose is to measure "how much noise and how much irritation".
The method of measuring noise was known. Mr. Graham Bell, who invented the telephone, invented the technique of measuring sound. In earlier times the unit of measurement was kept in the name of the inventor. Such as Newton's unit of force, Pascal's unit of pressure.
Bell is the unit of sound measurement in the name of Mr. Graham Bell. One bell, two bells and so on. One bell is so big that the unit is made by lowering it to one tenth. Deci-bell [dB]. One tenth of a bell.
Long story short (let's get to the basics with a few exceptions). I was saying that it is a story of measurement of how much noise and how much irritation. The intellectuals gave wisdom to the government. The survey was conducted on 200 residents of different ages from children to the elderly. Inside the silent room, at different times of the day and night, they were put to sleep by reciting poems of the type "Khoka Ghumalo, Para Juralo". Then the sound of artificial car was played from 30 decibels to 100 decibels. How many decibels the car woke up was recorded. The government enacted a new road noise law based on these results.
If the noise level in a house is more than 65 decibels at noon and 75 decibels at night, then they can apply for subsidy. Its name is sleep deprivation subsidy.
At the direction of the government, the voice began to be measured. Citizens were also told to call the following number if their sleep was disturbed due to the noise of the car.
0120-107-496
Uses a technique to remember phone numbers in Japan. 0120 is a pre-fix. This means that this phone is free. The caller will not be billed. He who is called will pay the bill. The Japanese pronunciation of 108-696 is (do-ro yaku nare). It means "the road that makes you better".
People called this number, the Japanese highway operator NEXCO company prepared for the subsidy. They own 7500 km of roads. He put his hand on his head to count the subsidy money.
The street owner did not take to the streets to change the law. He did not go to bribe the government. Took refuge in technology. Called the intellectuals. He wanted technical intelligence to reduce noise and irritation. Two technologies were used
(1) If there is no engine problem, the noise is made from the friction of the tire and the road. The road was carpeted with new elements. He also called the car companies for low noise tires and noise reduction of the car. Do you know the sound of Toyota Prius? Only 11dB. Equivalent to the sound of dry leaves falling from a tree.
(2) Sound proof fences have been installed on both the sides of the road. You will see in the music halls there are walls with holes. These absorb noise. Expensive. But cheaper than sleep deprivation subsidies.
But not everyone was able to live happily in peace.
Another story began. Those who drive, this time the complaint came from them. Japan's highways are not as free as America's. About 25 rupees per km for a private car. That means you have to pay a toll of Tk 8,250 to go from Dhaka to Chittagong.
The car owners complained. We will go to the highway with so much money toll and not see the natural beauty around? Mora taha diya prison to see the IC?
That's what shell saws, both in crisis. If you put the fence and do not put the fault and the fault. The street owners again sought the wisdom of the intellectuals of the universities. After a lot of hard work, the sound proof transparent walls came out. Made of any material like glass. You will see beauty, it will prevent noise pollution. In Japan, those who ride on highways will see white transparent walls on the sidewalks next to residential areas. The victory of technology is here. Not a policy for technology, technology innovation by keeping the policy right.
It is eleven o'clock at night. In Dhaka, a yellow ceremony is being held on someone in a building next to ours. Hindi songs are playing at 100 dB level. New flats are rising on the other side. Spices are being made for roofing and there is a rumbling sound. It is also not less than 100 dB.
The average noise pollution in Dhaka city is around 90 dB. Most of it comes from car horns. Harmful to health. Unnecessary headaches, the cause of heart disease. And noise pollution 100dB means it will cause problems in your baby's ears.
I did an experiment once in Dhaka ten years ago. How long can you drive without a horn? From Elephant Road to Kamalapur. Big Magbazar from Kamalapur. No horn. It is possible to drive a car without a horn in Dhaka city. You have to be a little patient, which is this.
Can't a "No Horn" Day be launched in Dhaka? Don't let a bunch of young people do research. How much noise pollution is reduced on "No Horn" Day is a measure of how much health is maintained.
“No horn” can be difficult from the start. The purpose is to reduce unnecessary horns. The "Five Horns" program may begin. Horn's budget for a driver should be 5 per day, then 5 per month, then 5 per year. Will it take a long time to reach zero? The lowest horn user should be rewarded. Bangladesh Environment Network can do this job.
A little awareness of the people can make Dhaka a better place for children to live.
Ashir Ahmed
Associate Professor
Kyushu University, Japan.
Thanks
That's a unique article of you.. Keep going brother