[Tagging] "Feature Proposal - RFC - Sidewalk

M∡rtin Koppenhoefer dieterdreist at gmail.com
Tue Mar 22 18:29:19 GMT 2011


2011/3/22 Josh Doe <josh at joshdoe.com>:
> Ah, I think I understand all the confusion now, as we have different
> models entirely. In my (and I'm guessing David's) view of things,
> sidewalks are NOT just another lane, but indeed a separate way.
> Perhaps even our definitions of sidewalks are different. I think you
> are thinking of city style sidewalks, where there is no barrier
> between the sidewalk and the road.


that's complex, sometimes there are, sometimes not. If there are
continuous barriers hindering you to cross (like crash barriers) I
would draw the sidewalk separately (and don't even see a need to
specify that its a sidewalk, but have to objections either to doing
so).


> My sidewalk is not always strictly
> parallel to the road, and indeed sometimes meanders near and far from
> the road, and has barriers such as kerbs, grassy strips, and perhaps
> even parking spaces between the sidewalk and the road.


Here also I would differentiate: parking spaces could be a parking
lane (parallel to the traffic -> lane) or orthogonal parking (not a
lane, or maybe "less lane"). A kerb is not a barrier for a pedestrian
(it is for wheelchairs, cars at higher speed and various other means
of transport, depending also on the height of the kerb). Barriers are
always relative to the way you move yourself. That was one of the
reasons I started the area-relation-proposal. This would permit (at
least in theory, don't know if a router could implement it) to define
the barrier between ways and lanes, and you could decide whether you
wanted to cross that 40 cm (1.3 ft) wall or walk (possibly for a long
time) around it.

Have also a look at this to get an impression about barriers:
http://www.youtube.com/watch?v=Z19zFlPah-o


> Let me quote
> David's proposal: "When the sidewalk is on its own, i.e. is a
> structure separated from the main street, it should be mapped
> separately as highway=footway." So yes indeed, David and I are not
> re-purposing highway=footway, since we are not applying it to lanes.


yes, in these cases I already map the footways as footways (also if
separated by grass).

cheers,
Martin



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