Virtual Speed Bumps

Here's the latest effort to crack down on aggressive driving: The Telegraph reports that the city of Philadelphia is painting phony speed bumps on city streets in an effort to get people to slow down.

Cool idea, but it will only work the first time anybody sees one of these, right? Regular drivers will quickly learn to drive as fast as they want over the images. How effective can that be? That's what the National Highway Traffic Safety Administration will attempt to find out. It'll be collecting data on the roads emblazoned with the fake bumps to see if they actually make roads safer.

(Hat tip: Andrew Sullivan)