[OSM-talk] Divided roads proposal

[Martin Koppenhoefer]

2009/12/3 Steve Bennett <stevagewp at gmail.com>

> Can I draw some attention to this:
>
> http://wiki.openstreetmap.org/wiki/Proposed_features/Divided_road
>
> I was going to propose exactly the same thing, pretty much. Maybe I'd
> quibble with some of the naming.
>

I am also working on a proposal (let's say it's in an very early phase) to
cope with dividers but also the opposite (no divider but linear possibility
to change way/lane), so I'd consider this in a more generalized way.

My first draft is here, you're welcome to comment:
http://wiki.openstreetmap.org/wiki/User:Dieterdreist/drafts

it allows to define things like: there is a kerb between the footway and the
street, but on given nodes there is a lowered kerb to crossover.

Or: these two ways are separated by a grass-divider (what does actually
permit pedestrians to cross at any place)

Or: this link is connected from the motorway between Node A and Node B
(probably would need to be a way, so splitting required)

Or: this is a lane that will turn right on next crossing (highway=lane,
turn=right), and changing to this lane is possible from A to B, from B to C
there is a uninterupted line, while from C to D the way must be mapped
separately (as it is divided physically). This would require somehow double
mapping and tagging (as there has to be a artificial way that connects the
original (main) way to node C, (which is the last changeover possibility for
the lane) as a normal way (so that applications can do routing considering
the lanes but will work also not knowing about them).

This should also work to map pedestrian areas beside roads: between this
road and this building there is a pedestrian area.

cheers,
Martin
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