A post in Signal vs Noise today referred to the Wikipedia article on Malfunction Junctions – confusing and dangerous intersections. There are some funny photos here.

The one that immediately came to mind for me is the Route 3/Drum Hill Road rotary in Lowell, MA. The aerial view doesn’t do it full justice, but when you’re in the car exiting the highway and are immediately put into a four-lane roundabout, it feels far more dysfunctional.