[Talk-GB] [Talk-transit] Mapping train services in Great Britain

[Dave F]

As others have said, this data doesn't really belong in OSM.
It's too transient, too complicated to maintain.

GB timetables are officially updated every 6 months, but services vary 
on an ad-hoc basis. This previous year being a good example. How 
detailed would your system be? Would you adjust it to the level of 
maintenance closures &  rail replacement services?

We don't even a valid database for buses. The Naptan import was poorly 
executed & even more poorly maintained. There are currently over 15000 
without highway=bus_stop tags.

The bus route relations are so poor Traveline/Travel West don't use them

Maybe it's best using your OSM time to improve & complete what is 
already in the OSM database.

DaveF

On 31/05/2021 22:18, Michael Tsang wrote:
> On Monday, 31 May 2021 16:14:47 BST Roger Slevin wrote:
>> and one in which I agree with Tony, Mark and Peter in saying that public
>> transport services and timetables don’t appear to me to have a valid place
>> in OSM
> We have already mapped the complete bus networks in certain cities. In OSM
> terms, a public transport route is defined as "the order where the service
> stops to carry passengers, and the path where it transverse on". It does not
> include the timetable data.
>
> I have also mapped a lot of bus and train routes in different cities as well,
> and it is very useful for OSM to have bus and train routes. When I travel to a
> new city I use OsmAnd a lot to find which bus I need to take to go to a certain
> direction, and where it will stop.
>
> The problem with GB railways is that each departure serves completely different
> stops, which means, if we strictly follow the "one variant = one relation"
> model as in current PTv2 schema, we have to map each departure as distinct
> relations on the map, because each departure serves different stops, which mean
> they are different variants.
>
> Michael
>
>
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