You can create a new relation with the alternate path and the parameter
state="alternate" (see
http://wiki.openstreetmap.org/wiki/Relation:route). Maybe add a note
to the description parameter. If the reference is the same, keep it
that way, but if the name is different use it for the name parameter.
Several tram/bus routes have variants. Often the reference name is the
normal one but with a stroke (that's hard to represent). For example
tram 92 in Brussels can sometimes be 92 (stroked) when it only does
part of the usual route.
So far I've only tagged the alternate parts of route like this.
Maybe we should add the rest of the route, or use super-relations
(include all the variations of a route relations into one relation).
Denis Moyogo Jacquerye
On Mon, Nov 30, 2009 at 7:59 PM, Benoit Leseul wrote:
> Hello everyone,
>
> I'm new to this list but I've been doing some mapping in Brussels for
> a few months.
>
> Recently, I have been tracking bus stops in my area and found an
> interesting case: the bus line 41 from the STIB/MIVB.
> Its route happens to be different on weekdays and during the weekend,
> due to the closing of the Bois de la Cambre for all vehicle traffic.
>
> On the digital screens outside and inside the bus is written "41 dévié
> fermeture bois / 41 omgeleid sluiting bos". There are hard stops (with
> shelters and all) on both routes.
>
> So... how should I tag this alternate route and its stops?
> a) Make a new relation for the weekend route, tagged with a made-up
> line number ("41d" or something) ?
> b) Make a new relation only for the part of the route which differs
> during the weekend, tagged the same way?
> c) Add both routes to the existing relation?
>
> I think b) would render the best on ÖPVN-Karte, but is maybe not so
> useful for other tools (a trip planner for example). a) would be more
> interesting for other tools but look odd on the map. And c) would be
> plain confusing for everyone.
>
> What do you think?
>
> --
> Benoit
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