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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