02-07-2020, 06:54 PM
Germany and I believe Austria use plainclothes inspectors on their tram/S-bahn and U-bahn trains and it works good there. You don't really see them coming until they're in your car and say "die Fahrkarte bitte!" And they don't mess around - if you are riding without a ticket, you get a €60 fine, even if you're a tourist and have no clue. It seems sufficient to get people to pay for their tickets and passes because they don't want to risk getting slapped with fine after fine.