[Tagging] Signal-controlled roundabouts

Dan S danstowell+osm at gmail.com
Fri Jun 13 16:24:56 UTC 2014


Roundabouts like this sometimes (in Britain) have "part time traffic
lights". So, some times of day it is a true roundabout, and some times
of day it is a circle of road with traffic signals! I don't know the
one you linked, to but it's possible that is what is going on here.

Dan

2014-06-13 16:54 GMT+01:00 Fernando Trebien <fernando.trebien at gmail.com>:
> Hello,
>
> I used to believe that, by definition, all roundabouts have free
> transit and right of way along the circle, and that anything that
> didn't display that property isn't a roundabout (just a circle). But
> reading the wiki once again, I'm a little in doubt. The wiki mentions
> that this is a roundabout, but I would previously have thought it
> wasn't because of the traffic lights within it:
> http://www.openstreetmap.org/#map=19/52.59689/-1.14146
>
> So why is it a roundabout? Is it because of the circular shape? Or
> could it be because it's impossible to infer that any of the entering
> ways have right of way, since they are all controlled by traffic
> lights?
>
> --
> Fernando Trebien
> +55 (51) 9962-5409
>
> "Nullius in verba."
>
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