WSJ: "Protests over [traffic] cameras aren't new, but they appear to be rising in tandem with the effort to install more. Suppliers estimate that there are now slightly over 3,000 red-light and speed cameras in operation in the U.S., up from about 2,500 a year ago. The Insurance Institute for Highway Safety says that at the end of last year, 345 U.S. jurisdictions were using red-light cameras, up from 243 in 2007 and 155 in 2006. One traffic-cam seller, Arizona-based American Traffic Solutions Inc., recently reported it had installed its 1,000th camera, with 500 more under contract in 140 cities and towns. Rival Redflex Holdings Ltd. says it had 1,494 cameras in operation in 21 states at the end of 2008, and expects to top 1,700 by the end of this year."