What Would a Good System for Working out Fares Look Like?

Discussion in 'Fares Advice & Policy' started by DynamicSpirit, 3 Jan 2017.

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  1. najaB

    najaB Veteran Member

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    Ladies and Gentlemen, we have a winner!
     
  2. DynamicSpirit

    DynamicSpirit Established Member

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    I agree. But I'm not sure if that's a bit of a red herring in the context of this discussion, as I don't think anyone is claiming that you could produce a system that has no anomalies anywhere. Rather, the question is, can you produce a system that is workable, and is (a) is fairer than, and (b) has fewer anomalies than, the current system. I and others are suggesting that a system built more closely on mileage (albeit with other factors built in) can do that. So far, I've not seen anyone provide a good reason in principle for doubting that (although I'd accept that you'd need to do more work and more modeling than any of us is probably able to do to prove it one way or the other)..
     
  3. sheff1

    sheff1 Established Member

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    Not at all.

    Some systems are much more likely to produce anomalies than others. The current system where different TOCs, with very different pricing models, price fares for the same sections of track will produce more anomalies than when one body sets the fares. The notoriously expensive Cross Country walk up fares which can be easily undercut by, for example, a string of Great Western/Northern/East Midlands walk up fares valid on exactly the same trains is a prime example.
     
  4. Bletchleyite

    Bletchleyite Veteran Member

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    It's not true, though. A pure kilometric/mileage based (same thing) system based on rail miles will by definition not have any anomalies.

    It might have undesirable features, e.g. long distance journeys being pricey, no peak/off-peak so peak overcrowding, some routes non-viable, some journeys that are short as the crow flies but long by rail expensive etc - but none of those are anomalies.

    I challenge anyone to find an actual anomaly in such a system with prescriptive routeing.
    --- old post above --- --- new post below ---
    You could, because provided you have prescriptive routeing a rail-mile based system will not have any actual anomalies at all (i.e. situations where splitting or buying long is cheaper). That's even true if it has a taper, or if it uses notional tariff kilometres.
     
  5. DynamicSpirit

    DynamicSpirit Established Member

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    OK, I'll grant you that with one proviso: You may find that you also cannot have peak/off-peak distinctions, since I've not yet encountered any suggestion for how you could do that without anomalies. If you can do that, and have prescriptive routing, then there would be no anomalies (although I'm fairly sure the disadvantages of such a scheme - not least, the complexity that completely prescriptive routing would cause to passengers) would far outweigh the 'no anomalies' advantage). Perhaps I should rephrase my early comment to something like, 'no one is seriously proposing a scheme that has no anomalies at all as a sensible way of setting fares)
     
    Last edited: 11 Jan 2017
  6. Bletchleyite

    Bletchleyite Veteran Member

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    Agreed, there is, by my mind, no peak/off peak differentiator that avoids anomalies *other than* basing it on journey segments which would require all tickets to be Advances so the correct peak/off peak segment was selected for each train.
     
  7. DynamicSpirit

    DynamicSpirit Established Member

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    Yep.

    I think by the way there is another way you can get close to no-anomalies, but not all the way there:
    1. On each route decide on which trains will count as peak trains, and how far out the peak restrictions will go. So to extend my example from earlier in the thread, you might - say - decide that on the West Coast Main Line, peak restrictions apply between Euston and Rugby on all trains scheduled to arrive at Euston between 6.30am and 9am Mon-Fri. So, on any of those trains, you need an anytime ticket to travel south of Rugby. The important thing here is that there is one fixed geographical area that applies to all peak trains.
    2. Set peak fares on all journeys between Euston and Rugby to be some simple multiple of the corresponding off-peak fare. I used 1.5 earlier.
    3. For journeys that are only partially in the peak zone - for example, Stafford to Milton Keynes, the 'anytime' far is calculated as 'off-peak fare' PLUS the peak adjustment for the portion of the journey that's in the peak zone. So if the peak multiplier is 1.5, then anytime Stafford-Milton Keynes fare = off-peak Stafford-Milton Keynes + 0.5 * (off-peak Rugby-Milton Keynes).

    I don't think it's possible for that algorithm to produce anomalies for one peak zone: The calculation means that split-ticketing at the peak/off-peak boundary will never be advantageous, people travelling mainly outside the restricted area won't pay unfairly large fares (as is currently the case for many longer distance passengers), and it won't produce any anomalies of long journeys being cheaper than short journeys.

    However, that reasoning breaks down if you have two peak zones. For example London-Birmingham: You probably want peak restrictions around Birmingham as well as around London. So for a London-Birmingham ticket, do you price the anytime markup to take account only of the London peak restrictions, or only of the Birmingham peak restrictions, or do you add the markups from the two sets of restrictions together? Whichever one you do, you'll end up creating anomalies. However, I'm fairly sure this will create far fewer anomalies than any other reasonable system (sorry - I don't consider requiring all tickets to be advances to be 'reasonable' :) and I suspect you agree and have only put that up as a theoretical example )

    (Actually, you could avoid anomalies in this scheme by doing things like issuing separate London-peak and Birmingham-peak tickets depending in which zone you're travelling on peak trains, but I think it's obvious that would be too complicated for passengers to be workable).
    --- old post above --- --- new post below ---

    ********************************************************************************************************************
    ******** New post (a few days later and unrelated). Sometimes I wish you could switch off the double post prevention system.... :( )
    ********************************************************************************************************************

    I think the following post from this thread perfectly demonstrates the need for a radical change to the way fares are calculated. It explains the reasoning behing why going via Preston is OK if travelling Leyland-Chorley.

    I'm assuming the above is correct because noone has contradicted it, but ... how could any reasonable passenger possibly be expected to understand and figure that out for himself? Even I don't understand the reasoning or some of the terminology in the post - and I'm pretty sure I would be in the top 2-3% of passengers when it comes to knowing stuff about the railways. Would even most revenue staff have sufficient knowledge to answer this simple routing question without having to search through documentation? Something better is surely urgently needed when it comes to routing guidelines.
     
    Last edited: 13 Jan 2017
  8. najaB

    najaB Veteran Member

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    Does the average passenger need to understand and figure that out for himself? The average passenger goes to a ticket office or website and buys the best ticket on offer.

    As Neil Williams posited previously - as long as the ticket office or machine is able to work out what is best then it doesn't matter how complex the system behind it is.
     
  9. DynamicSpirit

    DynamicSpirit Established Member

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    I would say in this case, quite possibly. If you have a ticket to somewhere for which multiple routes look reasonable, you do need to be able to tell fairly easily if the ticket is or isn't going to be valid by any of those routes.
     
  10. Bletchleyite

    Bletchleyite Veteran Member

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    The best way to do that is to list them on the ticket. With barcodes, tickets could easily be A4 sheets from a laser printer (or otherwise larger) so have much more room for this, or you go DB style and base it on 3 character codes. Again makes no odds as to what esoteric method was used to work it out.

    With Advances, all you need to know is the booked train. Again, no need to have a clue how the fare is worked out.
     
    Last edited: 13 Jan 2017
  11. PeterC

    PeterC Member

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    Requires the passenger to be clear about their requirement and to be aware that day and/or time of travel can affect the price.

    If you then require a complex dialogue to determine the best fare the traveller may simply decide that it is too complex and intrusive and decide to drive instead, not to mention delaying customers waiting behind.
     
  12. Bletchleyite

    Bletchleyite Veteran Member

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    I still think Trainline-style (or DB-style) TVMs are the way to go for this. Select a connection by price.
     
  13. MikeWh

    MikeWh Established Member Senior Fares Advisor

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    If I want to travel from London to Dartford I would not want to be tied to one of the four different routes. If I had to be I'd probably find another way of travelling.
     
  14. Haywain

    Haywain Established Member

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    At least that would stop people complaining that Paper Roll Tickets are too big!
     
  15. najaB

    najaB Veteran Member

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    Remember that, in this world, all tickets are Advances so you would be tied to a given train, not a given route.
     
  16. Bletchleyite

    Bletchleyite Veteran Member

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    If a return was twice a single, what would be the problem with deciding your outward route and purchasing a single, then deciding your return route when you arrive at the station and purchasing another single? Or, if you changed your mind mid-journey, exchanging your ticket for one for the route you did take and are intending to take? (that could replace actual excesses)

    With a system based in some way on mileage, you could have *any route you liked* at the appropriate cost, no need for the Routeing Guide, just buy a ticket for the route you happen to fancy. Bletchley to Milton Keynes Central via London, Edinburgh, Aberdeen, Inverness, Glasgow and Birmingham? Go ahead, if you like, here's the fare. Just like you can do things like that in Switzerland - in a couple of minutes at any TVM! (And I have priced out little "tours" like that in CH plenty of times before).
     
    Last edited: 13 Jan 2017
  17. MikeWh

    MikeWh Established Member Senior Fares Advisor

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    I've possibly jumped into a conversation mid-way through, but are we really saying that commuters would have to book advances for every journey?
    Well we're talking about commuter type routes. It often happens that trains arrive out of sequence so while I might intend to get the Sidcup line train to Dartford, the train which actually turns up first is the Blackheath and Woolwich line train. These are all DOO trains so no chance to swap on the train, and if I had to go back to the ticket office at London Bridge I'd probably end up needing a completely different ticket.
     
  18. najaB

    najaB Veteran Member

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    Under Neil William's proposal, effectively yes. All tickets would be train-specific.
     
  19. sheff1

    sheff1 Established Member

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    If such a proposal has been made I have missed it.

    The problem is that this thread has got so complicated, with multiple discussions running in parallel, that a suggestion relevant to only one sub-discussion can be taken out of context and then yet another sub-discussion starts up about something that had never been proposed in the first place !
     
    Last edited: 13 Jan 2017
  20. Bletchleyite

    Bletchleyite Veteran Member

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    Not necessarily. They (the flexible ones at least, and nobody in this thread is addressing off-peak because it is a very difficult problem) would however be route specific, in the manner that Swiss and German tickets are.
    --- old post above --- --- new post below ---
    This is within Greater London, I guess? Not sure I wouldn't just go for a zonal German-style joint tariff system managed entirely by TfL (and exactly the same as Tube fares) for those services.

    Outside of the big cities there are far fewer similar cases.
     
    Last edited: 14 Jan 2017
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