I'll be as brief as I can be, I hope you don't mind me answering the open questions....
Shortest route page said:
....(a) Train services often take different routes on weekend days from weekend days, does the shortest route reflect scheduled passenger service on that day, or is the shortest route determined from the shortest route of any day?
(b) If the shortest route involves doubling back, is that ok?
(c) Is it necessary to consult the 'easements' section of the NRG?....
(a) As it is the shortest route over which a sheduled service runs, it would be logical to assume it is for the day of the week on which you travel, but there is no guidance on this
(b) If it is the shortest route it is okay, but, as we are dealing with distance, not time, few (if any) journeys will be shorter with a doubleback in them.
(c) Depends, if it is the shortest route the NCoC allows it. If it is "within three miles" of the shortest route, that is only written in the NRG and...
National Routeing Guide (page F10) said:
...A journey which follows a route permitted by the Routeing Guide may be forbidden that route by a negative easement....
valid route rule said:
....(a) If there is a single map code: any route on the specified map from the origin routeing point to the destination routeing point without doubling back or passing through any routeing point discarded by 3 (a) (ii) (5) or any routeing point discarded by 4 (a) (ii) (5)....
Please change that rule name, it adds confusion, perhaps 'mapped routes rule' as has been suggested. I have picked out this section because there is only one reference to the "avoiding the routeing point" bit in the NRG, in an example, I don't believe it is intended or enforceable. It is not in the instructions for the NRG.
Direct service rule said:
....Restrictions
(a) On trains that take a circular route, you may not pass though either the origin or destination when travelling between the origin and destination.
(b) Break of journey, if permitted by the ticket, is not valid at any intermediate station unless travel to that station is permitted by the Shortest Route rule, or the Valid Route rule....
(a) you should change this to something like....
"On trains that take a circular route, you must disembark the train the first time the train calls at the destination printed on your ticket. You cannot use a train that calls at your origin station after you have boarded it".
....If it passes through, but was advertised/sheduled as calling there only on the way back, it could be said that it is still valid until it actually calls there. Some might argue Condition 18 forbids that, but I believe Condition 13 allows it.
(b) There is no rule that says you can't break your journey on a train that calls at both your origin and destination station (unless the ticket conditions prohibit it anyway), however, if it is not a valid route by other means, you can only use services that call at both the origin and destination as printed on your ticket (conditions 13 & 16). But as John notes, some dispute this.
Direct services rule said:
....Open Questions:
(a) On circular routes, is it only valid to travel in the direction which is the shortest from origin to destination?
(b) Is it necessary to consult the 'easements' section of the NRG?....
(a) The NCoC say they are valid on any direct trains (Condition 13), it is only in the NRG where easements can apply to restrict it further.
(b) Not in the case of direct trains, as the NCoC says direct services are always valid (Condition 13).
....My first draft of a definition of a valid route is:
Valid routes between the origin and the destination printed on a railway ticket for travel on National Rail in Great Britain are:
- the shortest route over which a regular passenger service operates, or a route not more than three miles longer than this shortest route; or
- the route taken by a through train which is advertised to operate between the origin and the destination printed on the ticket; or
- a mapped route shown in the National Routeing Guide; or
- EDIT - additional category added where origin and destination have a Routeing Point in common, a through train from the origin to the common Routeing Point followed by a through train from the common Routeing Point to the destination, even if this involves doubling back, that is passing through the same station more than once; or
- a route permitted by an Easement
unless the route is:
- a route prohibited by an Easement
subject to any route restriction shown on the ticket.
....
Where they have a common routeing point the only route is the shortest one over which a regular sheduled passenger service operates (unless there is an easement), so I'm not sure what your addition actually means???
Who is the target for your site? If it's the general public, I would change the FACETS ticket codes to their full 'Fares Simplification' names (i.e. SOS to Anytime Single etc) as the FACETS code is only visable to retail staff.
Definately agree with this.