Northern line din still as loud as a music gig

CNJ investigation revealed how the bad the screech really is

Friday, 4th February — By Geoffrey Sawyer

Sam Booth on tube level story

Our investigation on the Northern Line three years ago

NEW sound readings on the Northern line show sounds facing underground passengers are still as loud as a guitar-blasting rock gig – more than three years after a New Journal investigation into the screech.

Transport for London (TfL) measured the levels on the different route from Chalk Farm to Euston in November – finding a burst of 115.7 decibels (dB) on the Bank branch.

According to the Royal National Institute for the Deaf, 100 dB is similar to being in a nightclub and 110 dB is live music gig territory.

TfL said in an FoI response: “We are aware there are tunnel sections between Chalk Farm and Euston which appear to be louder than other sections and may cause discomfort for some passengers.

“Whilst the noise levels are not identified to be harmful and in line with the Health and Safety Executive’s defined limits, we are taking steps to mitigate noise across the network.”

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