Specifically, raised intersections.
I was up in Ithaca, NY this weekend cycling in and around town. Ithaca has always been a very progressive *cough* liberal granola *cough* town (hey I like it), so I was not surprised to see that the town is in the process of installing raised intersections. I didn't drive over any of them but cycled over a number of them.
I found them to be a non-factor for cycling (good) but have no clue of how effective they are at actually calming traffic (as I didn't drive over any). If they work, great, because they were really no problem to ride over on a bike. Anybody have any thoughts?