HSTEd
Veteran Member
- Joined
- 14 Jul 2011
- Messages
- 18,555
So - firstly I want to say that I don't want to relitigate the DOO debate, so please lets not have another one of those arguments.
But rather I am interested in the technical question of the best way to provide revenue protection without reliance on universal on board ticket checks or universal installation and staffing of barriers at all 2400 stations on the network.
So with those two constraints, no universal onboard ticket checks (spot checks are allowed but can't be blanket all the time) and say restricting barrier deployment to a thousand stations or less (which would cover a very large fraction of entries and exits), how would you deploy revenue protection?
A couple of ideas
1. We could make use of Permit to Travel-style machines that could print a time encoded QR code - that would prove the person was at a particular station at a particular time. If the machine was placed in the entrance and away from the platform it could make it difficult for people to claim they started at an unbarriered station nearer their destination. You could use an ePaper display to provide a backup for people with smartphones to perform the same function - or indeed a six or eight digit number for those people without phones when the PTT machine is out.
This QR code or number would be presented to the ticket machine at the barriered station in order to buy a ticket prior to exiting through the gateline
Obviously, this does not protect against journeys ending at unbarriered stations, but most journeys are likely to start or end at a barriered station, and with returns being how they are I'm not sure a proper outbound ticket and a short finishing single would be much cheaper than a proper return!
2. You could force people changing platforms at interchange stations through a gateline, but that would be difficult to achieve with many existing station layouts. This would prevent people making very long distance journeys through major interchanges between unbarriered stations without buying a proper ticket for at least the first part of their journey.
3. Variation of option 1, but we replace all paper tickets with MiFARE style programmable cards (which are extremely cheap these days). You could then place validators at station entrances and require people to validate before beginning their journey. If they are far away from the platform it would be difficult to start at a station closer to the destination.
I'm sure there are many others, so anyone have other ideas?
But rather I am interested in the technical question of the best way to provide revenue protection without reliance on universal on board ticket checks or universal installation and staffing of barriers at all 2400 stations on the network.
So with those two constraints, no universal onboard ticket checks (spot checks are allowed but can't be blanket all the time) and say restricting barrier deployment to a thousand stations or less (which would cover a very large fraction of entries and exits), how would you deploy revenue protection?
A couple of ideas
1. We could make use of Permit to Travel-style machines that could print a time encoded QR code - that would prove the person was at a particular station at a particular time. If the machine was placed in the entrance and away from the platform it could make it difficult for people to claim they started at an unbarriered station nearer their destination. You could use an ePaper display to provide a backup for people with smartphones to perform the same function - or indeed a six or eight digit number for those people without phones when the PTT machine is out.
This QR code or number would be presented to the ticket machine at the barriered station in order to buy a ticket prior to exiting through the gateline
Obviously, this does not protect against journeys ending at unbarriered stations, but most journeys are likely to start or end at a barriered station, and with returns being how they are I'm not sure a proper outbound ticket and a short finishing single would be much cheaper than a proper return!
2. You could force people changing platforms at interchange stations through a gateline, but that would be difficult to achieve with many existing station layouts. This would prevent people making very long distance journeys through major interchanges between unbarriered stations without buying a proper ticket for at least the first part of their journey.
3. Variation of option 1, but we replace all paper tickets with MiFARE style programmable cards (which are extremely cheap these days). You could then place validators at station entrances and require people to validate before beginning their journey. If they are far away from the platform it would be difficult to start at a station closer to the destination.
I'm sure there are many others, so anyone have other ideas?