Talking to the Evening Standard about calls for TfL to introduce "quiet carriages" on Tube and Overground services, like those that exist on National Rail, Caroline Pidgeon commented:
We cannot underestimate the impact noise has on Londoners. Creating quiet carriages should be seriously looked at.
There are many practical reasons why it might be difficult to introduce, but such arguments were once used to dismiss people wishing to avoid tobacco smoke on the Tube.