[Talk-transit] local_ref problem around Anerley in NAPTAN

Roger Slevin roger at slevin.plus.com
Wed Sep 2 16:34:36 BST 2009

TfL supplies its data to NaPTAN - and this is the national official source
of stop names.  I would therefore ask that OSM focuses on using the official
source of data - and reports discrepancies which I can then take up with the
responsible people in TfL






From: talk-transit-bounces at openstreetmap.org
[mailto:talk-transit-bounces at openstreetmap.org] On Behalf Of Richard Mann
Sent: 02 September 2009 16:27
To: Public transport/transit/shared taxi related topics
Subject: Re: [Talk-transit] local_ref problem around Anerley in NAPTAN


1) Would it make sense to seek permision from TfL to derive labelling
information from their website maps. It's such a rich source of info, it'd
be a pity not to try. They're a bit daft putting copyright on their spider
diagrams - if I were them, I'd want them to be copied.


2) I don't like the idea of ways for platforms, except possibly for the
limited case where you've got one platform on each side. It's just not
extendable. They should be areas. Sublettering for parts of platforms should
probably be on nodes, representing the point on the platform that's the
midpoint for boarding a train that stops at that platform (it will be in the
timetable system as "2a", and a notional router ought to direct you to that
point). If a platform is split into 2a and 2b, you probably need three nodes
- 2a/2b and 2 (for trains that take up the full length).



On Wed, Sep 2, 2009 at 1:17 PM, Frankie Roberto <frankie at frankieroberto.com>


2009/9/2 Shaun McDonald <shaun at shaunmcdonald.me.uk> 



That was ages ago that I done that. I have added those extra details to a
few stations, in some cases even adding the platform numbers. It does become
more difficult when there are island platforms. The reason why I have been
adding them is from a desire to know how to access the station, and how to
access the platforms. It is also an increased detail thing.

I had a discussion about island platforms on the wiki a while back (see
heffield). When I mapped Sheffield Station
(http://www.openstreetmap.org/?relation=79249) I noted that some platforms
have up to 6 different names (2A, 2B, 3, 4, 5A, 5B).

The options as I see it are:

* stick all the names in a single ref= tag, semi-colon or comma separated
(the former seems to be the convention?)
* add the names to the stopping points (the node on the actual railway way).
* splitting the platform way into different ways (eg two halves) and then
tagging those separately (although this still leaves you the problem of
different names for the different 'edges').
* doing something complicated with relations.



Frankie Roberto
Experience Designer, Rattle
0114 2706977
http://www.rattlecentral.com <http://www.rattlecentral.com/> 

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