(27 Mar 2018, 7:31 pm)Andreos1 wrote Over-riding has probably been an issue since buses were invented.
Until all operators introduce a system where passengers are required to clock out on disembarking, I not sure it will ever be solved.

The Amsterdam tram system introduced a touch in/touch out system years ago. There will still be the problem of people travelling for free. But for those who do clock in, it will be impossible for them to over-ride.

Yes, I am sure it probably has. Requiring passengers to clock out when disembarking is a good idea. I don't know what the penalty for over-riding would be. I thought perhaps the driver was alerted when someone passed the point of the journey they had a valid ticket for, as passengers board with a Return or a particular zone ticket which goes into the machine, and could potentially tell drivers when someone has stayed on too long and needs to pay the extra. 

People will always find ways of getting around things, but a tap in/tap out system is a good solution. I would think a potential fine would be a good deterrent for regular bus users.