[Tagging] Carriageway divider

Markus Lindholm markus.lindholm at gmail.com
Sun Aug 19 13:09:18 BST 2012


On 19 August 2012 11:44, Fabrizio Carrai <fabrizio.carrai at gmail.com> wrote:
> After a short discussion on the italian talk, I would move the discussion in
> this list. After some tests  with OSRM, I missed the availability of a tag
> to mark the continuos (or discontinued) line that divide the lanes in
> several single carriageway.
>
> In my opinion this is an important indication to the routers to avoid
> illegal turns across a road. A typical useful application case is a road
> with many side road [2]. Actually the problem is solved with several turn
> restriction relations, one for each side way. Tagging the main way with
> "divider=solid_line" the problem would have been solved in a easier way,
> also reflecting the real status of the road.
>
> Indeed a "Divider=solid_line" proposal [3] was already presented . I'm would
> revamp such proposal.
> What is your opinion ? Is there any router developer here ?
>

In my opinion it's best to treat legal separation (i.e. solid_line)
the same way as physical separation, i.e. create two separate
highways, one in each direction.

/Markus



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