The capital’s transport authority will erect signs aimed at noisy mobile phone users. Might the next stop be relative calm and a bit more civility? asks Hugh Muir, executive editor of Opinion

Posters to appear on Elizabeth line asking passengers to be considerate and not play music or videos out loud

The capital’s transport authority will erect signs aimed at noisy mobile phone users. Might the next stop be relative calm and a bit more civility? asks Hugh Muir, executive…