[OSM-talk] Non-junctioning crossing roads

[Konrad Skeri]

In your special case I guess it would be OK to not create a junction.
That will however lead to (false) warnings in OSM data validators and
there is a chance that someone else will insert that junction later
on, so I'll recommend putting the junction there now and use
restriction relations. (e.g. only_stright_on)

http://wiki.openstreetmap.org/wiki/Relation:restriction

Konrad


2009/12/1 Steve Bennett <stevagewp at gmail.com>:
> Hi all,
>   Is it ever correct for two roads to cross physically, at the same level,
> but not create a junction between them?
>
> The situation I have looks like:
>
>                   C
>          |
> A-->-----+----->--B
>          |
>          v
>          |
>          D
>
> With apologies for ASCII art. Cars go from A to B, or from C to D, but they
> can't turn. It's controlled by traffic lights. So, do I create the junction
> represented by the +, or just let them cross over? If I create the junction,
> how do I stop routing software trying to make turns?
>
> It's here if want to see it (Nearmap imagery):
> http://www.openstreetmap.org/edit?lat=-37.85348&lon=144.979389&zoom=20
>
> Queens Rd southbound branches to become Lakeside Drive, crosses Queens Rd
> Northbound.
>
> Sorry for the noob question, just wanted to make sure I get this right.
>
> Steve
>
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