alt Hacker NewsThat is a very basic roundabout. I was expecting by "magic" that you would have to go round some part in reverse (clockwise for US left-hand driving). This is nothing compared to the original "magic" roundabout of Swindon, Wiltshire.
This interchange might have been better off using a diverging diamond interchange layout [1]. While not a roundabout they are "magic" and we should use them more often.
They just look confusing because at some point you are effectively driving on the wrong side of the road, but are extremely efficient. My daily commute includes one that cuts a few minutes off what it once took to negotiate the previous traditional interchange.
[1] https://en.wikipedia.org/wiki/Diverging_diamond_interchange
Replies
it does note that it's satire. a lot of drivers in America have reflexive dislike of roundabouts.
this one probably is not good for a DDI because it is also supposed to be a bus interchange for a BRT project, and the buses will stop at the roundabout level.
We have one of those diverging diamond ones in the general area too (at the I90/SR18 junction). It's interesting to drive through until you get used to it.