Transport for London will insist that passengers wear masks after July 19th as the government allows restrictions to be lifted elsewhere.
Opinion polls show strong support for the measure, and contrasts with a relaxation in policy on national rail services such as Southeastern which are under the control of the Department for Transport and not TfL.
The rule will apply to buses, the tube, DLR, London Overground and tram.
London Travelwatch had been calling for a delay to see levels of usage when a greater level of normality had returned.
The survey was insisted upon by the DfT after government insisted on heavy cuts under the most recent financial agreement.
Despite the delay is passenger usage surveys, a number of central London bus routes are already seeing substantial cuts in frequency before it’s known what future demand could look like.
With annual cuts up to £700 million expected in coming years, cuts are expected to spread widely.
TfL already have 1,500 fewer staff than planned before the pandemic.
There are concerns that rule or no rules, enforcement will be limited.