drowning out the noise - good car alarms

by:Kingcobra     2019-10-02
drowning out the noise  -  good car alarms
As the country moves toward developed countries, noise pollution is the cost of Malaysian urban development.
Along with the development, the noise also follows.
There was noise, Dr. M explained.
Salman Leong is a proliferation and widespread phenomenon that is equally widespread.
In the end, this is the price and result of progress, said the director of the University of Malaysia (UTM)
Institute of noise and vibration.
"Noise is a recognized source of pollution and is a recognized consequence of large projects.
20 or 30 years ago, people were more tolerant, but with the advancement of technology and the improvement of noise control standards overseas, Malaysians are now looking forward to a better quality of life in sound terms.
"The Institute is looking at how noise and vibration in buildings affect sensitive receivers such as houses, schools, hospitals and residential areas.
The Institute analyzes and designs mitigation measures in places where road use noise impacts, railways and airports-are recommended centers and consultants for noise, vibration and seismic engineering in the construction industry and government agencies.
It is also involved in large transportation projects such as National MRT and LRT systems, the construction of highways and KLIA2 and is conducting environmental impact assessments (EIA)
Report on Penang light rail.
In addition to local problems, noise is the most common source of pollution in developed countries, Dr. Liang believes.
"But those who live on the East Coast next to the oil and gas towns of camarman and kerter may insist that air pollution is more serious.
Water pollution is a problem for those living near the sea or rivers.
Water and air pollution is therefore very localized-it depends on where you are.
But across the country, I think noise is the biggest source of pollution because it affects everyone.
Road traffic is the most common source of noise pollution because it is the most common, he said.
Whether it's Tokyo, Sydney or London, Global Research sees road traffic as the most troublesome problem because it's synonymous with development.
In Malaysia, however, the building noise is the biggest.
He noted that Singapore has more stringent construction laws than Malaysia.
There, regardless of size, each construction project must continuously monitor noise and vibration throughout the duration of the project.
If the project is worth more than $5 m (RM15mil)
, The data must be available online and 24/7 in real time.
Smaller items also need to be measured, but only weekly reports are required.
"We haven't arrived yet.
Here, the monitoring of this scale is for MRT projects and is monitored on a monthly basis.
As part of the environmental management plan, continuous monitoring is only used for underground work, "said Dr. Liang.
The recent MRT project in Klang Valley did raise Malaysia's standards due to the strict noise control requirements of the Ministry of Environment (DOE).
The first few light rail projects in Malaysia-The Star and Putra lines in the Basheng Valley-did not have noise control measures because there were no guidelines at the time and the EIA requirements were not that strict.
In these projects, DOE is flooded with complaints about noise pollution, requiring noise barriers to be set up for all subsequent MRT and LRT projects.
Dr. Liang believes that while Singapore has strict requirements for managing building noise, Malaysia has more stringent guidelines for train and highway noise.
The train noise standard implemented by Doe is comparable to the EU standard.
"Our best practices are stricter than those in Hong Kong, Singapore and Australia.
We are second only to Japan.
Our new level of road noise is comparable to that of developed countries.
We are not going backwards in noise management.
"Previously, Singapore focused more on building noise, so there was less focus on highways and trains.
They didn't spend 300mil until last year (RM900mil)
Install noise control barriers in MRT.
Because their citizens complain about the train, it goes back.
Malaysians complain about traffic noise and fear the construction of buildings, especially public transport infrastructure, Dr. Liang said.
The country's first suitable sound barrier is installed on the 1990 highway. The Ampang-
Kuala Lumpur elevated highway is the first
Road noise mitigation attempts.
But the toll roads after the highway still use the first generation of noise barriers.
Transparent tunnels covering roads are common in South Korea, China and Japan, but while this technology is available here, the cost is a problem.
According to Dr. Liang, we haven't built such a shell yet, but Setiawangsa-
Damansala-Pantai Highway
Bandalam Highway, Bandar Utama-Klang LRT (
All in the Valley of Basheng)
The Penang light rail will be equipped with the next generation of sound insulation barriers.
He said the measures were more effective in reducing noise because they covered most of the roads.
"In order to absorb the sound, we are using acoustic metal plates instead of polycarbonate or plexiglass (the cost may be five times that of the original ).
The panels are covered by curved mesh designed by architect Hijas Kasturi.
"Generally speaking, the noise level will only increase to a certain extent as road construction stops.
Therefore, in some urban areas, noise levels will increase over time.
Levels can only get worse if new sources of noise, such as new housing developments, appear.
The Department of Energy is then responsible for ensuring that mitigation measures are in place.
Noise pollution is more than just an annoying sound, Dr. Liang stressed.
"Noise pollution affects the entire community, but what is annoying is subjective.
If a train passes by and you can't even hear yourself in the next 30 seconds, it's noise pollution.
But if you live near a MRT with a noise barrier, you can't stick to complete silence.
There are two ways, he says, to judge whether sound is acceptable: to compare new noise with absolute limits-who (WHO)
S. Environmental Protection Agency recommends "good noise levels" or absolute limits, but these are all too idealistic, Dr. Liang believes.
Noise levels already exist in developed areas, so the new MRT will not cause deafness.
For example, recommended noise levels in schools or low-noise environments
The rising area is between 50 dBA and 55 dBA (
DBA representative "-weigh-
Ted decibel ", the standard for measuring sound).
But noise levels in many parts of KL are between 60 dBA and 65 dBA.
Therefore, if a new noise source is added, its volume should not exceed the existing volume.
Dr. Liang pointed out that you can't say no to MRT in the school area, because if the noise recorded in the area is already 70 dba, it will violate the limit of 50 dba to 55 dba of WHO.
Compare New Noise to relative noise-will be compared by train or truck of air-
Adjust noise, for example.
If the noise level rises by 10 dBA because of this new noise source, this source is treated as interference.
But this disturbance is considered to be pollution only when the whole property is affected.
Dr. Liang believes that it is the best and most logical way to measure the baseline first;
You can then compare the new noise source to the existing one.
He believes that it is good compared to absolute numbers, but it must always be in the context of an existing environment.
How to determine noise pollution when complaining:> noise levels are measured with or without a new source of violation-for example, when a car is not on a highway.
If a new highway is built, a baseline must be set before the start of the project, so in the future, when complaints are made, there is a baseline before and after the noise level to compare.
> Compare new noise levels to land use-there are different noise limits for low noise
Density, commercial and industrial areas.
> Check to see if the noise level is out of standard-for example, if someone who lives in Petaling Jaya SS2 complains that the new traffic noise level is 65 dBA, this is not out of standard because even if the car is not driving, noise levels in the area have also reached 65 dba.
But if the same complaint is made in Kuala Lumpur, where the average noise level is low, 65 dBA is an issue.
The Department of Energy commissioned Dr. Liang to conduct a social impact study on the level of noise pollution in the country, which led to the publication of the environmental noise control guidelines in 2004.
"The guide is a set of best practices.
They do not have the legislative power, nor do they apply retroactively.
Since this is very subjective, you can't just make a law that prohibits noise interference.
"According to the Environmental Quality Act, EIA reports are essential for large projects, but DOE can request such reports for small projects that do not belong to the act, according to guidelines
Dr. Liang said that it is not possible to expect a developer of a new project to absorb the noise where it is already noisy and take KL as an example.
This is because the level of noise in the city is already well above the level of noise specified in the guidelines.
While the environmental noise control guidelines also recommend best practices to prevent troubles and interference from neighbors, law enforcement is an issue.
People don't seem to care at all in Malaysia.
"For example, the car alarm rings every half hour by shouting 'old newspaper, old newspaper 'to attract attention --
Hours, or use a mower in odd times and ride a bike in a quiet neighborhood, all related to social and public nuisance rather than noise pollution.
Unlike countries such as Australia, Malaysia is more likely to accept such nuisance, even if it is considered normal.
These are all rash acts that neither the Department of Energy nor the local parliament can object.
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