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Comment by Terr_ | Hacker News Reader

Agreed, with the condition that there is only one lane.

Ones with multiple layers stress me out, there are more ways to screw up and more demands on your defensive-driving attention.

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I think the problem is not that they're impossible to figure out but you have about 2 seconds from when you see the sign to when you're entering the double roundabout.

That’s a very solvable problem of bad signage.

Yes. If there are 2 it should be a "dog bone" with a long straight bit so you have time to adjust. Like:

     |            |
    =O============O=

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