[OSM-talk] Directional tagging

[Shaun McDonald]

Hi,

On 28 Nov 2008, at 13:16, Martin Norbäck wrote:

> Hi everybody,
> I'm sure this has been discussed in length before, but I cannot seem
> to find a good way to search the archives. Anyway, I will present my
> thoughts here and you can respond or be quiet :)
>
> I'm trying to fix at least two issues I have.
>
> a) A way that is sort of one-way but allows buses and taxis in the
> opposite direction.
>
> Don't know how to tag them, currently I've just ignored buses and
> taxis and tagged them oneway=yes.

It might be easier to use 2 parallel ways for this. It wouldn't  
surprise me if in a years time every [major] road has a way for each  
direction that you can travel on it.

>
>
> b) 2+1 ways as we call them in Sweden, they are normal ways but have a
> small fence in the middle and 2 lanes on one side and 1 lane on the
> other side. They look like this:
> http://www.vv.se/filer/Vägprojekt/3-Falt.jpg

I would say that these should be done the same way as motorways, with  
2 parallel one way roads. The appropriate number of lanes can be added  
for each direction.

>
> [...]
>
> The advantage of having a simple tagging mechanism like this is that
> the editors can easily prevent accidental reversal of a way, like josm
> does right now with oneway. There are probably other uses for this
> kind of scheme. And it doesn't really fit into a relation either.

JOSM will already allow the reversal of tags that are direction  
specific.

Shaun

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