A new method of boarding buses in London is being trialled after nine bus workers died from Covid-19.
London’s Mayor Sadiq Khan said the deaths were "devastating", reiterating it was "really important we treat public transport workers as heroes".
Transport for London said the month long trial using middle-door only boarding was in addition to measures such as deep cleaning.
A total of 14 public transport workers have died in the capital after contracting Covid-19.
More than 7,000 people have died so far from the virus in the UK.