[Tagging] Formally informal sidewalks

Marc Gemis marc.gemis at gmail.com
Fri Jul 14 11:16:24 UTC 2017


On Fri, Jul 14, 2017 at 12:51 PM, Martin Koppenhoefer
<dieterdreist at gmail.com> wrote:
>
>
> 2017-07-14 12:20 GMT+02:00 Svavar Kjarrval <svavar at kjarrval.is>:
>>
>>
>> A street with a sidewalk on either side but no marked crossings:
>> http://www.openstreetmap.org/#map=17/64.08800/-21.89846
>> (Sidenote: If one tries to route from no. 73 to 42,
>> GraphHopper suggests a long route while Mapzen assumes the user is
>> already on the other side of the street)
>>
>
>
>
> These are (IMHO) mapping errors. You can't draw isolated footway islands and
> expect a router to magically understand those are sidewalks which you can
> cross without a connection. E.g this:
> http://www.openstreetmap.org/way/102907998
> There aren't even footway subtags like footway=sidewalk, but even if there
> were I wouldn't expect working routing from this graph.
>

But what if there are no crossings marked? Do we have to invent
crossings then ? (e.g. near each junction)
It is not uncommon to have such a network of sidewalks without
"zebra"-crossings.
People are allowed to cross everywhere then.

There isn't even always a lowered kerb for people in wheelchairs. If
the are lucky, they can use the connection of a driveway with the
street, as those usually have a lowered kerb.

m.



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