[Talk-us] Mapping traffic signals and stop signs using MapRoulette

Paul Johnson baloo at ursamundi.org
Tue Jun 13 12:19:43 UTC 2017

On Tue, Jun 13, 2017 at 7:00 AM, Marc Gemis <marc.gemis at gmail.com> wrote:

> On Tue, Jun 13, 2017 at 12:56 PM, Paul Johnson <baloo at ursamundi.org>
> wrote:
> > How does it not?  A node doesn't infer a way that it's attached to,
> though a
> > node may infer what nodes it crosses through.  This is why relations
> became
> > a thing, to model things that can't be inferred from the other two
> primitive
> > types, particularly for enforcement and turn restrictions.
> Are you saying that when I (or the software) traverse a way in forward
> direction  and it encounters a node that has a give way  tag on it,
> that it cannot read the direction tag on the node as well and then
> decided whether it has to apply the give way or not ?

In cases more complex than a simple one-way-in, one-way-out scenario on a
one-way road, not with any real consistent accuracy, no.
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