Would have been nice. I hated getting on a bus fresh out of the workshop as some engineers were less picky about using gloves so the steering wheel could be coated in all sorts of oils and greases. Horrible.
Wipe your hand around the wheel, if it gets covered in cr4p go back to the office and say you want the cab cleaning and show the Inspector (or whatever buzzword they are called these days) the state of your hands.
Then go and spend 10 minutes cleaning your hands, the bus goes into service late and some lazy fitter gets a rollocking.
I had to do it a few times until the fitters were reminded of the requirement to ensure the cab is clean enough for service.
Incidentally it wasnt just me, there were about 50 of us doing it, the delays quickly stacked up and upper manglement were not happy and so 'had a chat' with the engineering supervisor and the problem magically disappeared overnight.