[OSM-talk] Ditches

Peter Childs pchilds at bcs.org
Tue Dec 15 16:23:27 GMT 2009


2009/12/15 Anthony <osm at inbox.org>:
> On Tue, Dec 15, 2009 at 11:01 AM, Chris Hill <osm at raggedred.net> wrote:
>>
>> Steve Bennett wrote:
>> > Alight, I've had enough of this.
>> You've had enough of it!!!  After nearly fifty emails about how to tag a
>> ditch with a bridge over it in a few hours I think everyone in OSM has
>> had enough of it.  I've rarely seen so much crap in such a small space.
>> Haven't any of you heard of restraint?
>>
>> Clueless doesn't begin to describe it ...
>
> Maybe you just don't understand the details.  Yes, in this particular case
> it's a bit contrived, but what if we're talking about a major highway?  You
> don't want to tag bridges where there are no bridges, that's just going to
> confuse people when their car tells them to "continue over the bridge".  And
> you don't want to show a gap between the ditch and the road where one does
> not exist, because someone might be tempted to try to walk there, and maybe
> they want to find a different route rather than walking over a major
> highway.
>

Don't make much difference unless you are going to give the road a width,

Mark the culvert to start where the culvert starts, and also where it ends.

If you want to ensure that nobody wants to believe that there might be
a gap between the start of the culvert and the side of the road. Then
your going to need some way to give the road width.

Generally sides of roads are not marked on OSM only the centre. To map
the sides your going to need to map the road as an area like we do
with rivers, and this is not really supported yet! (or I believe
really wanted)

Peter.




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