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> Previously, only drivers from the 15mph and 25mph roads had to stop!

This is something which drives me crazy with a decent number of roundabouts that the Wisconsin DOT constructs. You have a rural intersection where a local road crosses a major highway, and the local road has a stop sign in either direction. Then the DOT slaps a roundabout in there, greatly inhibiting the highway traffic which is 95% of the traffic going through that intersection. That is not a good use case for a roundabout! But for some reason they insist on doing them anyway. It's terrible road design.




Fast traffic on rural roads can be a major cause of accidents. The roundabouts slow everyone down and keep them slightly more alert.

(Not sure if this is the reasoning Wisconsin would use though.)




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