create highway=emergency_bay preset

[westnordost]

Used 5000+ times, documented since 2014 in German wiki and since 2017 in English wiki: https://wiki.openstreetmap.org/wiki/Tag:highway%3Demergency_bay

According to taginfo, mostly used in Germany, Austria, Switzerland, Italy and France so far.

I am not sure if "Highway Emergency Bay" is the correct word for it in English, I did not find any wikipedia article or translation about it.

[westnordost]

Uh darn, I didn't add the .json extension, wait a moment...

[quincylvania]

Hmm I'd really prefer not to introduce another highway type for routers to deal with. I'd recommend highway=service with a service subtag if these really need to be mapped as separate ways.

Though this might be okay for vertices similar to how we have highway=passing_place.

[westnordost]

So, remove the line? More than 4 out of 5 times, the tag is used on vertices rather than lines anyway.

[quincylvania]

@westnordost I think we can accept this with just vertex geometry. I'd use a vehicle icon and change the name to "Emergency Stopping Place" or similar.

[westnordost]

Ok, done

[quincylvania]

@westnordost Thanks!