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Asia Noise News

Less noise pollution in Bangkok with new Electric buses ?!

GENTLE ON THE ENVIRONMENT AND THE PUBLIC PURSE, ELECTRIC BUSES ARE THE WAY TO GO

BANGKOK: — Electric buses are undergoing trials in the capital this month, with the Bangkok Mass Transit Authority (BMTA) offering free rides on three routes.

If approved by the Cabinet, the BMTA will buy 400 to 500 of the lithium-battery-powered vehicles from China and put them into service next year.

BMTA caretaker director Pranee Sugrasorn says the electric buses are more environment-friendly than their petrol- and natural-gas-powered (NGV) counterparts. “The air in Bangkok will improve and that should boost residents’ health,” she says.

At Bt15 million per unit, the price of electric buses is more than three times that of their gas-powered equivalents, which cost Bt4.5 million. However, the battery-powered option is cheaper in the long run.

Over its 20-year lifetime, the fuel, maintenance and running costs of an NGV bus amount to an estimated Bt34 million, compared to Bt30 million for its electric counterpart.

In total, the city’s public-bus operator will acquire more than 3,000 new vehicles to replace its ageing fleet. Some will be NGV buses, under a purchase plan that is already at the bidding stage. But more than 2,600 are likely to be electric, since Transport Minister Prajin Juntong has encouraged the BMTA and other state public-transport operators to gradually switch from diesel and gas to electricity. Prajin says the switch would soften the impact of fluctuations in fuel prices and make vehicles more environmentally friendly.

An electric bus is pollution-free

and easy on the ears because it has no internal-combustion engine. It is powered by rechargeable batteries, so there are no emissions. The more than 3,000 public buses that currently ply Bangkok streets consume some 120 million litres of diesel per year and pump out huge quantities of carbon dioxide and other pollutants. Many of the capital’s buses have been in use for two decades or more and their ageing engines are constantly adding to the air and noise pollution.

Electric vehicles are increasingly popular as fossil fuels dwindle. About 90 cities around the world have opted for electric buses as a cleaner and quieter choice for their mass-transit systems. Bangkok is making the right choice in adopting the technology.

But it is also important that we develop our own alternative-energy mass transit so that we don’t have to rely on imports. Thailand must build on its long history of assembling diesel-engine buses for domestic use.

Suranaree University of Technology and the Provincial Electricity Authority have taken the lead by developing an electric bus with zero emissions. Their prototype, powered by a lithium-ion battery, has the potential to be produced on a commercial scale. And while fuel-cell technology is still relatively expensive, it will become cheaper in the near future.

The government must now push for the use of electric buses as a major mode of transport in all our big cities. That option will not only be lighter on the public purse, it also will carry less impact for the environment and for our health.

Source: http://www.nationmultimedia.com

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Asia Noise News

India: IIT Gandhinagar developing low-cost noise reducing devices for autistic kids (affordable headphones that act as noise-cancelling devices and low-cost sensors)

India: IIT Gandhinagar developing low-cost noise reducing devices for autistic kids (affordable headphones that act as noise-cancelling devices and low-cost sensors)

Researchers from the Indian Institute of Technology-Gandhinagar (IIT-Gn) are developing low-cost devices for autistic children in India.

This includes affordable headphones that act as noise-cancelling devices and low-cost sensors — part of a larger system being designed to educate, train and rehabilitate children with complex neurodevelopment disorders.

“Children with autism or auditory processing disorder often have a hard time with noise. Background noise like that of a fan or a toilet flush or a vacuum cleaner can increase the anxiety level in the child. It is for this that these headphones or earmuffs come in handy.

“In the recent past, there have been instances in other countries where headphones have been used to help such children. These headphones are very expensive and the costs can vary between Rs 4,000 and Rs 25,000,” said Nithin V George, assistant professor, Electrical Engineering, IIT-Gn who is working on developing a low-cost device for children who battle disorders characterised by social impairments, communication difficulties and restricted, repetitive and stereotyped patterns of behaviour.

“The device is currently at a design stage.It is a little premature to put a price tag, but It should cost around Rs 1,000. The headphones will be such that a child can wear it all day without discomfort,” George told The Indian Express on the sidelines of an event held on autism at the Knowledge Consortium of Gujarat (KCG) campus here recently. Currently IIT-Gn is conducting a feasibility study along with BM Institute of Mental Health in Ahmedabad to assess the workability of such a device among autistic children. It is also receiving funding from the Department of Science and Technology (DST), Government of India.

“No studies have been done on this in the past, so we are conducting a feasibility study as well,” the professor added. Meanwhile, another set of researchers from the same department at IIT-Gn are engaged in developing a special system for autistic children who have difficulty interpreting what others think or feel, as they do not understand social cues, such as tone of voice or facial expressions. “We are developing a virtual reality-based anxiety sensitive adaptive intelligent system for autistic children. The purpose is to address the gap in their social skills,” said Uttama Lahiri, assistant professor of IIT-Gn who is heading a team of researchers who are busy creating real-world-simulations using computer graphics. “We are trying to use technology so that will make educating, training and rehabilitating autistic children much more simple. With these virtual simulation models, we will help these children enhance their motor-skills, understand social etiquette, face unexpected situations and make friends,” said Lahiri. Meanwhile, this team is also developing low-cost sensors that is part of the intelligent system used to help autistic children. “These sensors also have a wider application,” she added. –

Source: http://indianexpress.com/article/cities/ahmedabad/iit-gandhinagar-developing-low-cost-noise-reducing-devices-for-autistic-kids/#sthash.GCmfvcPP.dpuf

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Asia Noise News

New noise barriers for Mumbai in Sion, Matunga and Parel

New noise barriers for Mumbai in Sion, Matunga and Parel

The MMRDA is erecting noise barriers on three flyovers along the Dr Babasaheb Ambedkar road at the cost of nearly Rs 19 crore; pilot project in BKC had already proved successful in 2010

Residents living along the busy Dr Babasaheb Ambedkar road and patients in Sion Hospital are set to get some much-needed respite from the incessant honking and engine noise that have been making their lives miserable.

The MMRDA has begun installing noise barriers on the Sion Hospital, King’s Circle- Tulpule Chowk and Hindmata flyovers at a cost of Rs 18.9 crore.

Speaking to mid-day, MMRDA Joint Project Director Dilip Kawatkar said, “The installation of noise barriers on flyovers on the arterial Dr Babasaheb Ambedkar road will help bring down the vehicular noise levels and benefit the residents living in buildings close to the road.

The installation work has already begun on the flyover opposite Sion Hospital and it is expected to be completed on all three flyovers in six months.”
Successful pilot

In 2011, a team of experts from MMRDA, including then MMRDA Commissioner Rahul Asthana had gone for a tour to Italy, where it studied the noise barrier projects. MMRDA later said it would be installing noise barriers on all the flyovers and road over bridges that it constructs in the future.

Before the officials left on the trip, the authority had already begun a pilot project in BKC in 2010. Before the noise barriers were installed along the road near Kalanagar in BKC, the decibel level was between 60 and 90, which has come down to 50-55 during the day and well below 45 in the night.

Mumbai: MMRDA to erect noise barriers in Sion, Matunga and Parel – See more at:Source

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Asia Noise News

Less noise from big bikes in Thailand ?

The Land Transport Department is to impose tighter noise control on big bikes or big motorcycles with the noise level not exceeding 95 decibels.

Land transport deputy director-general Mr Wattana Pattharachon said he had already discussed with producers and importers of big bikes about the problem of their loud noise that the department has wanted to control.

He said that from now on manufacturers of big bikes would have their prototype motorbikes sent to the department for examination before production licences were to be granted.

As for the importers, imported big bikes will be examined to determine whether they meet the noise standard set by the department before they can be put on sale, he added.

Mr Wattana said he had informed the manufacturers and importers of big bikes to warn their distributors or dealers not to sell or install substandard exhaust pipes failing that the department might revoke the certificates of the models of the bikes In question.

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Asia Noise News

Traffic noise can give you ‘belly tyre’, gain weight ?

Noise traffic from roads, rails, aircrafts can make you fat from your belly, suggests a new study.

Exposure to a combination of such noise may pose the greatest risk of acquiring a spare tyre, otherwise known as central obesity, and thought to be one of the most harmful types of fat deposition around the body.

The researchers assessed how much road traffic, rail, and aircraft noise 5075 people living in five suburban and rural areas around Stockholm, Sweden, had been exposed to since 1999.

The analysis indicated no link between road traffic noise and body mass index (BMI). But there was an association between road traffic noise and waist size, with a 0.21 cm increase for every additional 5 dB increase in exposure, although this was only significant among women.

Similarly, there was a link to waist:hip ratio, with a change of 0.16 for every 5 dB increase in noise exposure to road traffic; this association was stronger in men. larger waist was significantly associated with exposure to any of the three sources of noise, but the link was strongest for aircraft noise; a larger waist:hip ratio was associated with road traffic and aircraft noise only.

The more sources of noise pollution a person was exposed to at the same time, the greater their risk of central obesity seemed to be. Age was an influential factor, with associations between central obesity and road traffic noise only found for those below the age of 60.

Since the study was observational, no definitive conclusions could be drawn about cause and effect.

However, they suggests that noise exposure may be an important physiological stressor and bump up the production of the hormone cortisol, high levels of which are thought to have a role in fat deposition around the middle of the body.

The study is published online in Occupational and Environmental Medicine.

Source: http://timesofindia.indiatimes.com/

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