The Hindu : New Delhi News : Capital’s noise levels exceed limits

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Wednesday, Feb 27, 2008
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New Delhi

Capital’s noise levels exceed limits

Bindu Shajan Perappadan

Data shows noise due to traffic during the day is much higher than what is good for general public
‘Continuous exposure to noise can lead to hearing damage, increase of heart rate etc.’

NEW DELHI: The Capital is getting noisier. A comparative data analysis of the ambient noise levels recorded in the past three years by the Central Pollution Control Board (CPCB) reveals that Delhi is well past the prescribed limits, putting under stress and related risks both its residents and floating population.

The latest ambient noise levels measured in residential areas along major roads in Delhi both during day and night by CPCB point to a steady rise in the amount of noise that Delhiites are constantly exposed to.

“Analysis of the data collected for 2005, 2006 and 2007 has indicated that ambient noise levels are shooting way ahead of the allowed levels.

What’s worse is the fact that the noise levels don’t come down even at night. Data collected from our seven monitoring stations have indicated that ambient noise levels have been higher than what is allowed and all stations, except one, have recorded an increase over the past three years,” said a senior CPCB official.

The only site which has recorded a reduction in the ambient noise levels during daytime is the monitoring station at NDMC Flats on Mandir Marg at 63.9 dB(A) last year. ``The data clearly shows that the noise due to road traffic during the day is much higher than what is good for the general public. We have been warning about the ill-effects of being exposed to constant, loud and irritating noise,” say officials.

Night-time ambient noise levels which are prescribed at 45 dB (A) for residential areas have also been ear-splitting high.

Scientists have found that continuous exposure to noise with a volume more than 70 decibels can lead to permanent hearing damage, increase of heart rate and blood pressure, and has the potential to damage respiratory and digestive systems. Constant noise can lead to stress disorders, which could further develop into ulcers or high blood pressure. Sleep deprivation usually occurs for people at a decibel of 45.

According to the recommendation list brought out by CPCB, the Government should look into providing proper mass rapid transportation system, strict environmental impact assessment must be made before granting permission for a new industrial, residential and commercial projects and motor car manufacturers should be encouraged to produce quieter vehicles.

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