> Speed bumps usually kill more people by slowing down ambulances than they save by reducing vehicle speeds. I don't think you're going to find research to sup

> Speed bumps usually kill more people by slowing down ambulances than they save by reducing vehicle speeds. I don't think you're going to find research to support that. At least, I couldn't. http://skeptics.stackexchange.com/questions/6419/do-speed-bumps-cause-more-deaths-than-they-save http://skeptics.stackexchange.com/questions/6419/do-speed-bu... has some interesting discussion of it. I'm a big fan of the other advice, though, about changing the road design to discourage speeding.