Residential Tube Noise (2)

Questions to the Mayor of London – answered at on 10 January 2020.

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Photo of Navin Shah Navin Shah Labour

In your letter written on 5 November 2019 addressing the issue of TfL’s response to Tube noise, you wrote that the TfL has “carried out a targeted programme of rail grinding at key sites which, at many locations, has led to a reduction in both in-carriage and residential noise.” Can you provide proof of this reduction in each of the key sites that were targeted?

Photo of Sadiq Khan Sadiq Khan Mayor of London

Transport for London has carried out targeted grinding on the Central, Jubilee, Northern and Victoria lines over recent months.

On average, post-grind noise measurements have found that in-carriage noise levels were significantly reduced:

Line

Average reduction of in-carriage noise levels, following grinding (dB)

Central

10

Jubilee

13

Northern

19

Victoria

2

Significant reduction in noise levels have also been achieved as part of this grinding programme at known residential noise hotspots, by up to 12dB. This includes South Wimbledon to Morden on the Northern line, and Highbury and Islington to King’s Cross on the Victoria line.