[OSM-talk] Connecting ferry routes to roads?
Peter Miller
peter.miller at itoworld.com
Mon Sep 1 14:50:30 BST 2008
Good point. I have just connected the ferry route to the road network but I
think there should be a node with amenity=ferry_terminal at this point. This
is the point at which one would say the ferry called at within the
timetable. Incidently I have added one at a point where the ferry just runs
up onto the beach (ie there is no actual physical quay at all). I notice
that Potlatch doesn't prompt for amenity=ferry_terminal.
Btw, if one is talking about a larger ferry port, such as the Port of Dover
how should one code the individual quay and the actual port as a whole? Is
amenity=ferry_terminal the quay or the port itself and how should one encode
the other one? The definition we have on the wiki is "Ferry terminal/stop. A
place where people/cars/etc. can board and leave a ferry." Which to me is
the smaller of the two, ie the quay. The word 'Port' does not appear on the
wiki.
In general we seem to have scattered public transport access stuff all over
the namespace and some features are still missing. Here is a brief review of
what is there and what is missing
'Aerodrome' (airport) and 'Gate' are both within Aeroway (sounds sensible to
me).
'Railway Station' and 'Tram Stop' are within Railway. There is no platform
tag. We have a subway_entrance but not an 'Entrance' for a surface station
or for an airport or anything else at all in fact except a cave!
'Bus Stop' is part of 'highway' but the 'bus station' is an 'amenity'.
'Moorings' is within Waterway but 'ferry_terminal' is within amenity. Pier
is within man-made. We don't have a Port tag at all. Slip-way is within
Leisure.
A 'taxi bay' is within Amenity.
Risking being immediately shot down I am going to suggest that it might be
useful to consider rationalising some of this tagging to avoid a java-script
sort of mess that we have to then live with for ever? We could do an audit
of the current public transport tags (and possibly others) and in then move
a bunch of them to new more rational places and update the tools at the same
time. If we don't do this sort of thing soon I feel we will be stuck with it
for ever. Possibly we could dual tag for a while. We add the new tag and
deprecate the old one but ensure it remains available for a while.
In particular I suggest the following:
In relation to buses would it be more logical to move 'bus station' to
'highway'.
For ferries would it be more logical for ferry_terminal, Pier and Slipway to
all be within 'Waterway' features and to create a Port tag for the boundary
of large ports. Possibly natural=lake and landuse=reservoir and also belong
there.
For railways should be create a Platform tag. Turn subway_entrance into
entrance which can be used for all terminals (and also possibly other
buildings/establishments/landuse). Personally I think entrance is actually a
very general key for any node on a boundary and should not be a value for
another key if that makes sense.
Sorry for this long answer to a short question but it is something I have
been meaning to mention for some time. Any thoughts?
Peter
> -----Original Message-----
> From: talk-bounces at openstreetmap.org [mailto:talk-
> bounces at openstreetmap.org] On Behalf Of David Groom
> Sent: 01 September 2008 13:22
> To: osm
> Subject: [Spam] Re: [OSM-talk] Connecting ferry routes to roads?
>
> ----- Original Message -----
> From: "Dan Karran" <dan at karran.net>
> To: "osm" <talk at openstreetmap.org>
> Sent: Saturday, August 30, 2008 3:29 PM
> Subject: [OSM-talk] Connecting ferry routes to roads?
>
>
> >
> > I fixed up the Isle of Man Steam Packet ferry route so that it goes
> > all the way into Douglas harbour in the Isle of Man again. While I was
> > at it, I connected it up with the road network so that routing
> > programmes could route traffic through it as well. Is this common
> > practice, and is there a standard way of linking them in? I've just
> > linked the route to a service road which is connected to the rest of
> > the road network.
>
> That seems to make sense and is how I have been mapping vehicle ferry
> routes.
>
> However I'm not quite sure what to do with ferry routes which are for foot
> passengers and available for cyclists, but not for motorcars..
> Following the logic above I would connect the ferry route to the nearest
> highway with a footway tag. Although this would allow routing for cyclists
> and pedestrians this seems "wrong" to me.
>
> For instnace the high speed poassenger service from Southamption to East
> Cowes
> http://www.openstreetmap.org/?lat=50.89469&lon=-
> 1.40605&zoom=17&layers=B00FTF
> I have not conncted to the highway down the pier, as it would produce
> short
> stubs of footway rendered on the maps which really are just corridors
> through buildings, but this means at the moment the ferry route is
> unconnected to anything.
>
> David
>
>
> >
> > Cheers,
> > Dan
> >
> > --
> > Dan Karran
> > dan at karran.net
> > www.dankarran.com
> >
> > ___
>
>
>
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