The use of traffic cameras is exploding in the U.S. There are now over 3,000 of them being used to catch red-light runners and speeders. For drivers, it’s stoking a lot of anger. Residents in one town in Illinois recently boycotted a mall until a camera at its entrance, which was being used to catch people making rolling right turns on a red, was removed. In Arizona, one man was arrested for attacking a camera with a pick axe. Some have labelled the use of these cameras a budget gimmick. While they’re almost universally hated, they do bring in much-needed revenue for the municipalities that use them.