dna special: Brace for a noisy ride, Mumbai monorail to move beyond 90dB

The Mumbai Metropolitan Region Development Authority (MMRDA) had promised that the noise level of the monorail will be between 65 to 85 decibels (dB), but a survey conducted by an expert showed that it is over 90dB.

Exactly a year ago, PRK Murthy, chief of transport and communication, MMRDA, had said efforts were being made to further reduce the sound levels of motor. On the contrary, when noise activist Sudhir Badami checked the sound level, he was surprised to find that it was  above 90dB.

“The noise level inside the cars is more than 93dB. MMRDA had claimed that it will be a silent or quiet mode of transport,” said Badami.

The Brihanmumbai Electric Supply and Transport Undertaking (BEST) buses create noise level of close to 95dB. As per the World Health Organisation, the safe sound limit is 85dB, anything above this will result in irreversible noise induced hearing loss. According to medical practitioners, loud noises above 80dB can seriously affect the development of hearing ability in young children. Due to the design and technology of the monorail it can take sharp turns. In Mumbai, it has been constructed in the residential areas having narrow roads. Those residents living along the corridor will surely have a tough time. “In crowded sections, people residing alongside will be subjected to noise at every five minute intervals,” added Badami.