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Jblx2yesterday at 8:19 PM1 replyview on HN

>If you pull in after the car already in the roundabout passes by, you get hit by the next one.

Yes, that seems like a roundabout design defect. Seems like the radius of the circle is too large, so cars aren't slowing down enough.


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shaftwayyesterday at 8:55 PM

How large is too large?

I'm American with a roundabout very close to my house. The inner radius is 10 meters with an island in the middle, and single lanes in all directions. I have witnessed it successfully navigated at well over 100 kph.

Also, it's not a speed thing. I've seen this at another roundabout near my house. There's a school dropoff near it, so in the morning traffic backs up through the roundabout onto one of the entrances. The rules are that traffic in the roundabout has the right of way, so nobody lets anyone from one of the side streets in.

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