Cameras to catch speeders and scofflaws are spreading. If you Get the Feeling You're Being Watched you probably are.



The village of Schaumburg, Ill., installed a camera at Woodfield Mall last November to film cars that were running red lights, then used the footage to issue citations. Results were astonishing. The town issued $1 million in fines in just three months.



But drivers caught by the unforgiving enforcement -- which mainly snared those who didn't come to a full stop before turning right on red -- exploded in anger. Many vowed to stop shopping at the mall unless the camera was turned off. The village stopped monitoring right turns at the intersection in January.



Once a rarity, traffic cameras are filming away across the country. And they're not just focusing their sights on red-light runners. The latest technology includes cameras that keep tabs on highways to catch speeders in the act and infrared license-plate readers that nab ticket and tax scofflaws.



Drivers -- many accusing law enforcement of using spy tactics to trap unsuspecting citizens -- are fighting back with everything from pick axes to camera-blocking Santa Clauses. They're moving beyond radar detectors and CB radios to wage their own tech war against detection, using sprays that promise to blur license numbers and Web sites that plot the cameras' locations and offer tips to beat them.



Cities and states say the devices can improve safety. They also have the added bonus of bringing in revenue in tight times. But critics point to research showing cameras can actually lead to more rear-end accidents because drivers often slam their brakes when they see signs warning them of cameras in the area. Others are angry that the cameras are operated by for-profit companies that typically make around $5,000 per camera each month.



State police started placing the cameras on highways around Phoenix in November. In December, a trooper arrested a man in Glendale while he was attacking a camera with a pick ax. In another incident, a troupe of men dressed as Santa Claus toured around the city of Tempe in December and placed gaily wrapped boxes over several traffic cameras, blocking their views. Their exploits have been viewed more than 222,000 times on YouTube.



Republican state representative Sam Crump has introduced a bill in the legislature to remove the cameras, which he says were approved "in the dead of night...as a budget gimmick."



Some entrepreneurs are trying to help camera opponents fight back. Phantom Plate Inc., a Harrisburg, Pa., company, sells Photoblocker spray at $29.99 a can and Photoshield, a plastic skin for a license plate. Both promise to reflect a traffic-camera flash, making the license plate unreadable. California passed a law banning use of the spray and the plate covers, which became effective at the beginning of this year.



A free iPhone application available on Trapster.com lets drivers use their cellphones to mark a traffic cam or speed trap on a Google map. The information on new locales is sent to Trapster's central computer, and then added to the map.



Studies are mixed on whether traffic cameras improve safety. Some research indicates they may increase rear-end collisions as drivers slam on their brakes when they see posted camera notices. A 2005 Federal Highway Administration study of six cities' red-light cameras concluded there was a "modest" economic benefit because a reduction in side crashes due to less red-light running offset the higher costs of more rear-end crashes.

rear-end experience

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