[Tagging] How to tag correct number of lanes for freeway on/off ramps?

Paul Johnson baloo at ursamundi.org
Fri Jul 3 21:53:27 UTC 2020

On Fri, Jul 3, 2020 at 3:19 PM Matthew Woehlke <mwoehlke.floss at gmail.com>

> Consider https://www.openstreetmap.org/#map=17/42.85888/-73.77169. As I
> write this, I-87 is annotated as having 3 lanes south of the on/off
> ramps (south of 146). However, the off ramp starts all the way back at
> the Sitterly Road overpass, and the on ramp doesn't fully merge until
> just before the emergency vehicle turn-around only slightly north of
> said overpass. Accordingly, there are actually four lanes for these
> stretches.
> What is the correct way to model this?

It's hard for me to explain so try the example in
https://www.openstreetmap.org/changeset/87518597#map=14/42.8442/-73.7720 on
for size?
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