[OSM-talk] highway=stop

[Karl Newman]

On Jan 23, 2008 5:15 PM, David James <david at djames.org.uk> wrote:

>
> On Thu, January 24, 2008 12:46 am, Robert (Jamie) Munro wrote:
> > Pieren Pieren wrote:
> > | Could someone explain the tag highway=stop provided by the 'Map
> > | Features' page ?
> > | I would expect that all tags approved and moved to this "reference"
> page
> >  | are clearly described.
> > [snip]
> > | Well, fine, the foot note on the wiki page explains that the main
> > | description is a non-sens...
> > | Shall we put the node on the way where the sign is, a little bit
> before
> > | the intersection (and how much) ?  or is it planned to use a relation
> ?
> > | or does it really help to tag such signs (I mean, it does not
> influence
> > | routing) ?
> >
> >
> [snip]
> >
> > | or should we remove this tag from the approved Map features and create
> > a | proposal wiki page where a clear definition could be done ?
> >
> >
> > We need a way to know where stop signs and give way (yield) signs are
> > and which direction they face. It probably requires a relation between
> the
> > node and the way they are on.
>
> Does it require a relation, or just that the highway=stop be on a node a
> short distance back from the shared node at the intersection (except on a
> 4-way stop where the node at the intersection could be highway=stop)?
>
> I could make an argument that this scheme matches the physical world: the
> ways are aligned on the centreline of the roads (maybe?) and the stop sign
> is actually some distance back from the centreline of the road protected
> by the stop sign (at least in the UK) - do any countries have stop signs
> hanging above the centre of the intersection?
>
> --
> David James
>

Bad idea to add a node just for the stop, in addition to the intersection.
The stop is topologically associated with the intersection, which is more
important (and more logical) than the physical location. A relation would
probably be the best method.

Karl
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