Chronic traffic noise exposes kinks in India’s urban regulations Premium

Chronic traffic noise in India poses serious health risks, highlighting weaknesses in urban regulations and public awareness.

In India, urban noise is relentless yet it is largely under-recognised as a public health concern. The average Indian urban traffic reportedly routinely reaches 80-100 dB, exceeding the World Health Organization’s recommended 70 dB limit, creating a recognised risk of hearing loss.

Noise-induced hearing loss (NIHL) has long been viewed as an occupational disease of factories and mines. Scientific evidence challenges this assumption. Chronic exposure to environmental noise, particularly road traffic, can cause clinically measurable damage even in the absence of industrial hazards.

Scientific evidence suggests what cities dismiss as background noise may in fact be producing measurable biological injury.

CSIR-National Environmental Engineering Research Institute senior technical officer Satish K. Lokhande said NIHL typically first appears around 4 kHz. In a 2022 study on firecracker noise, Dr. Lokhande documented how repeated exposure to intense sound peaks, often exceeding 85 dB, “accumulates auditory stress,” initially causing a temporary threshold shift that becomes permanent with sustained exposure.

In another 2023 study of road tunnels that he co-authored, Dr. Lokhande found sound levels between 78.9 and 86.5 dB(A) with peak energy again concentrated at 4 kHz. Urban road traffic contributes a continuous, moderately elevated noise environment, often punctuated by horns and construction activity.

(dB(A) is short for A-weighted decibels, a sound level in decibels that has been adjusted to reflect how sensitive human hearing is at a certain frequency.)