[Talk-transit] routing on osm using public transport ?

[Wojciech Kulesza]

Hi,
we're aiming at creating shapes of various bus routes. For this purpose, we
use various osm routing engines (including cloudmade) to draw the paths
that buses use.
Due to limitation that such routing is using car for calculations, we're
finding it hard to overcome a difficulty of how to route in places that are
for public transport only, as bus stations etc.
Good example is this station:
http://www.openstreetmap.org/?lat=52.409641&lon=16.955182&zoom=18&layers=M

I tried to add a key psv=yes or perhaps should we use access=designated
cloudmade only updates their data once a week so it is of crucial
importance to find out what's the best approach.

Several questions that i find important:
1) is there a router with API that would allow public transport as mode of
transport ?
2) how should places like bus station be tagged in order to allow car as
mode of transport
i noticed that once station has access=no bus=yes and then routing request
provides an answer with routing starting from nearest available "normal"
street. other settings provide no result.

Do you have any suggestions on what's the best approach ?
Manual creation of route relations has disadvantages, due to frequent
changes that result from construction and other changes. therefore, we
would be then able to create a possibly-open source software to allow
better and quicker updates of route relations (coming from stops location
and automatic creation of shapes from osm routing).

Any comments most welcome. Maybe we could discuss this on osm irc channel
as well.

Regards,
Qlex
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