It's the same with the buses.....over the past few weeks I've only seen ONE of the drivers on my route wearing a mask. Every time I get on a bus there's always the driver plus at least one passenger on without a mask even though, on the bus windscreens, it CLEARLY says
"compulsory wearing of masks on buses"
If certain people won't adhere to the rules, either because they don't think it applies to them or they are just too pig headed, then they should be refused boarding, and the drivers could help by setting an example.