[Tagging] How to map public transport routes that start and end at the same place and overlap themselves?

Sun Oct 1 06:18:38 UTC 2017

Warin's example is good. A couple of other points to consider ...

1) The "via" tag can be useful. Take a look at Line 5 in Lancaster.
Sometimes it goes "via" Chestnut and sometimes "via" Pleasure, but never
both.
2) If the line has a designated destination, I'd use that. Again, looking
at Line 5, the named destination is "Grandview/Rossmere". Looking at the
actual stops, it seems to me that "Rossmere" is a "via" and "Grandview" is
the actual destination. Looking further, it seems that the Lancaster
Shopping Center is the consistent point, so I would make two relations, one
"to" Lancaster Shopping Center (Grandview) and the other "from".
3) Again on the same line, there is a way that is actually traversed twice
in the SAME direction, the short part after leaving Michaels. This can be
mapped. (See, for example,
http://www.openstreetmap.org/relation/5849581#map=17/31.63434/-8.00037,
where http://www.openstreetmap.org/way/389916567 is traversed twice in the
same direction.)

For Lines 1, 2 and 3, I'd mark them as "to" Park City A (or B or C), with a
"via". For instance, Line 1 would be to (or from) "Park City A" via
"Southeast" with a terminus at Park City.

On Sun, Oct 1, 2017 at 7:07 AM, <tagging-request at openstreetmap.org> wrote:

>
> Message: 5
> Date: Sat, 30 Sep 2017 22:31:30 -0400
> From: Albert Pundt <roadsguy99 at gmail.com>
> To: "Tag discussion, strategy and related tools"
>         <tagging at openstreetmap.org>
> Subject: [Tagging] How to map public transport routes that start and
>         end at the same place and overlap themselves?
> Message-ID:
>         <CALGMrhm1=A2ErnBdPAxckkwB50BzLKVv2AvDqZ9fFRSiiiQ9nA at mail.
> gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> I'm in Lancaster, PA right now and would like to add the Red Rose Transit
> <http://www.redrosetransit.com> bus lines to OSM. The network is made up
> of
> six "City" lines, serving destinations close to the city, and 11 "County"
> lines, which are radial routes to nearby towns with stops along the way.
> (An interactive map of each route can be found here
> <http://busfinder.redrosetransit.com/Infopoint>.) What I'm confused about
> is how to properly map the relations of the City routes based on the
> information in the wiki page
> <http://wiki.openstreetmap.org/wiki/Public_transport>.
>
> The page says that each direction of the route should be a separate
> relation. For the County routes such as Route 10/Lititz
> <http://www.redrosetransit.com/wp-content/uploads/2017/
> 08/Route-10-all-8-28-17.pdf>,
> this is easy (though I'm still figuring out how the system's forks work).
> Since the Queen St Station is the hub of the entire network and serves as
> the starting point for most of the routes, I'd have a relation for the
> outbound direction that starts there and ends at Lititz, and another
> starting and Lititz and ending at Queen St Station.
>
> However, the City routes aren't so simple. All of them are effectively
> loops that start and end at the same place, but have significant overlap
> with itself in the other direction. For most such as Route 1/Park City A SE
> <http://www.redrosetransit.com/wp-content/uploads/2017/
> 08/Route-1-8-28-17.pdf>,
> they start at Queen St, go out toward one destination, come back to the
> other side of town to a different destination, then come back toward Queen
> St. It effectively makes a very misshapen figure 8. Neither far end of it
> really serves as a terminal, but rather a prominent station, of which there
> are several along every route.
>
> What's the best way to map something like this, where the beginning and end
> are the same place, making it a one-way loop that overlaps itself? I
> suppose it all boils down to how to deal with this kind of situation:
> [image: Inline image 1]
> --Albert
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> ------------------------------
>
> Message: 6
> Date: Sun, 1 Oct 2017 16:06:52 +1100
> From: Warin <61sundowner at gmail.com>
> To: tagging at openstreetmap.org
> Subject: Re: [Tagging] How to map public transport routes that start
>         and end at the same place and overlap themselves?
> Message-ID: <a36c4e93-12fb-4f5b-6ed1-53038f5c9ce6 at gmail.com>
> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>
> On 01-Oct-17 01:31 PM, Albert Pundt wrote:
> > I'm in Lancaster, PA right now and would like to add the Red Rose
> > Transit <http://www.redrosetransit.com> bus lines to OSM. The network
> > is made up of six "City" lines, serving destinations close to the
> > city, and 11 "County" lines, which are radial routes to nearby towns
> > with stops along the way. (An interactive map of each route can be
> > found here <http://busfinder.redrosetransit.com/Infopoint>.) What I'm
> > confused about is how to properly map the relations of the City routes
> > based on the information in the wiki page
> > <http://wiki.openstreetmap.org/wiki/Public_transport>.
> >
> > The page says that each direction of the route should be a separate
> > relation. For the County routes such as Route 10/Lititz
> > <http://www.redrosetransit.com/wp-content/uploads/2017/
> 08/Route-10-all-8-28-17.pdf>,
> > this is easy (though I'm still figuring out how the system's forks
> > work). Since the Queen St Station is the hub of the entire network and
> > serves as the starting point for most of the routes, I'd have a
> > relation for the outbound direction that starts there and ends at
> > Lititz, and another starting and Lititz and ending at Queen St Station.
> >
> > However, the City routes aren't so simple. All of them are effectively
> > loops that start and end at the same place, but have significant
> > overlap with itself in the other direction. For most such as Route
> > 1/Park City A SE
> > <http://www.redrosetransit.com/wp-content/uploads/2017/
> 08/Route-1-8-28-17.pdf>,
> > they start at Queen St, go out toward one destination, come back to
> > the other side of town to a different destination, then come back
> > toward Queen St. It effectively makes a very misshapen figure 8.
> > Neither far end of it really serves as a terminal, but rather a
> > prominent station, of which there are several along every route.
> >
> > What's the best way to map something like this, where the beginning
> > and end are the same place, making it a one-way loop that overlaps
> > itself? I suppose it all boils down to how to deal with this kind of
> > situation:
> >
> > --Albert
>
> Take a look at
> http://www.openstreetmap.org/relation/7258397#map=15/-33.7219/150.3061
>
> Starts and ends at the same place.
>
> Has loops where it travels on the same road in both directions.
>
> That help?
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