Consider the Humble Roundabout

In my very early days of analytics, much involved with civil engineering data.    So this transcript of a Freakonomics article on the traffic roundabout was good.  These traffic management structures are often  seen in England, more rarely in the US.   But here locally getting more common.  This article contains traffic and accident statistics and arguments for and against, which I could have used back then.   Too late, but still interesting.