Diverging Diamond Interchanges

So I took one look at the front cover of this months "Roads and Bridges" magazine and thought the proverbial WTF.
 (http://www.roadsbridges.com/Diamond-de-Triumph-article8447)



It's called a Diverging Diamond Interchange. For the span of the overpass the traffic lanes are reversed, but otherwise looks like a traditional Cloverleaf. They say it's safer, but it makes the freeway on-ramp left exit, and the offramp merges into lane 1. Neither are expected modus operandi of a freeway interchange.

Call me old fashioned, but I prefer a roomy great roundabout that you don't even slow to enter.

To show it's not just a concept, here's real video of one in use.




Next week - Single Point intersections.