The Mumbai Metropolitan Region Development Authority (MMRDA) has decided to construct noise barriers on all new flyovers throughout the city. However, experts have questioned the method in which the authority is planning to curb noise pollution.

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In its meeting on Thursday, the authority cleared the proposal for installing sound barriers. “The first such test project was implemented by MMRDA in Bandra Kurla Complex (BKC), where the 1,100-metre-long sound barriers have significantly reduced noise. The decibel levels came down from 75dB to 60dB, bringing relief to residents. Hence the authority proposes to construct similar barriers on all newly constructed flyovers as well as the upcoming projects,” says the proposal.

However, Sumaira Abdul Ali, noted activist and an expert in the field of noise pollution, said, “Each and every flyover may not need a sound barrier. The authority should first carry out noise mapping of all the flyovers and then they should decide which portion is creating major nuisance.”

Giving the example of JJ flyover, Abdul Ali added, “Metal plates were installed along the flyover, but the authorities themselves agree that they are not sound barriers. Moreover, they have been grossly misused for advertising purposes. In the case of BKC, the residents have complained that the barriers block the light that used to enter their homes. Such cases should be heard before taking a final decision,” opined Abdul Ali.