[OSM-talk] Clarifying and representing road markings at junctions

[Roy Wallace]

On Wed, Sep 30, 2009 at 5:59 AM, Matt Williams <lists at milliams.com> wrote:
>
> Thoughts/comments/suggestions?

First, I am assuming you are interested in solutions that are possible
now, without major changes to the OSM database structure. etc.

In that case, use a relation. Two options:

1) http://wiki.openstreetmap.org/wiki/Relations/Proposed/Segmented_Tag
Merge a and b into a single way, and apply tags as necessary to the
sections of the way with segmented_tag.

2) http://wiki.openstreetmap.org/wiki/Relations/Proposed/Collected_Ways
Model a and b with separate ways, and group them with a collected_ways
relation with a tag to indicate continuity, e.g. continuous=yes. (Note
that the wiki page of this proposed relation should be changed so that
members do not necessarily have "a common name")