Also without having to make sure fairs paid up people could get on from the middle of the bus instead of just the front door which seemed to speed the boarding

Also without having to make sure fairs paid up people could get on from the middle of the bus instead of just the front door which seemed to speed the boarding process This is just a rule they've made: You can have both fares and boarding at any door in the bus. I know this because this is how the busses in Trondheim, Norway are. You can't always pay on the bus, so everyone has their ticket before they get on. They have spot checks by folks that aren't bus drivers. Does it cause some folks to risk not buying a ticket? Yes, but it is obviously not worth doing more checks.