[Talk-transit] Proposed Feature - RFC - Public Transport
Dominik Mahrer (Teddy)
teddy at teddy.ch
Mon Dec 13 20:30:44 GMT 2010
On 12/13/2010 06:26 PM, Albin Michlmayr wrote:
> Till now I solved this by defining one stop in the loop as terminus.
> This lines then take different routes for each direction. Therefore I
> found the solution with single-direction route relations quite
> suitable. I don't know if this is the best solution for openstreetmap
> but I defenately think that there ist missing something in the
> established scheme.
I agree, I do it equal.
> The forward or backward role of a way in the relation is in my opinion
> useless, because it is not clear if it refers to the direction of the
> way or the route. Currently it is used in both senses.
I agree to this too.
>> I think what we're edging towards is that expressing a tram stop as a
>> single node isn't really enough. I think the open question is how tram
>> stop pole nodes should be tagged, whether that affects
>> highway=bus_stop, and how you deal with joint bus and tram stops.
> When I first discovered the oxomoa-scheme I thougt that it's quite a
> good idea to use the new tag "public_transport" because what's the
> difference between bus and tram stops - there are enough stops used
> by both means of transport. After following this discussion here I'm
> not so shure any more because world wide there are already mapped about
> 660000 bus stops as highway=bus_stop and it's senseless to retag all
> this stops. On the contrary there are also already mapped about 57000
> objects as public_transport=* (23000 nodes as stop_position and 22000
> nodes and ways as platform) which of course is much less but also too
> many to retag all these.
Because highway=bus_stop (pole) and railway=tram_stop/halt (stop
position) have different meanings the current schema is stamped with an
inconsistency. Resolving this inconsistency would require a redefinition
of at least one of these tags. As you have written: This does not make
> I don't know which tags are best to be used at the moment but I'm really
> interested in a broadly accepted guideline for a more unified taging in
> the future.
The longer I think about it, I think it would make sense to use new and
clearly defined tags. But the well known tags highway=bus_stop and
railway=tram_stop should not lose the meaning/value. In the new schema
it should be defined how they are interpreted. For example: node on the
way => stop position; node beside the way => pole/platform. So we do not
loose information and the already invested work does not lose the value.
Actually in my proposal this is missing.
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