Huh, I didn&#x27;t know these were a) a &#x27;thing&#x27; (as in, more than one across the UK, and b) officially called &#x27;magic roundabouts&#x27;.<p>I&#x27;ve encountered one in Hemel Hempstead; it was a little scary (istr you can see traffic coming &#x27;towards&#x27; you), but the article makes me want to go back and try it out again.<p>Edited to add: Between this and the horrific Welwyn Garden City one-way system, I guess Hertforshire must have (or have had) some of the maddest traffic planners in the UK...