Hi.
At first, I would say, there is no railway routing algorithm similar to
one for cars or pedestrians.
There even is no "allowed direction" of one of the routes usually.
So I would do it the following way:
- the track should be tagged as one single line, divided into two
different lines along the platforms
- no oneway at the track as it's no legal restriction; it's a usage
decision of the railway operator, I think.
- If you add the routes as relation, add the parts that apply -
different for each direction at least along the platforms.
the relation is AFAIK interpreted in order of it's elements or vice
versa. Per role you can define forward only or backward only for parts
of the route.
Compare http://wiki.openstreetmap.org/wiki/Relation:route#Members for
details.
regards
Peter
On 23.09.2010 20:53, Dave F. wrote:
Hi
I've a railway routes that's drawn as a single line with a relation
added; except where the tracks become wider apart to go each side of a
platform where they are two lines.
Does routing software need the relation to differentiate between the
directions? Up/Down, Forward/Backward?
And how would you decide which direction is which?
Cheers
Dave F.
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