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LAUREL, MD - OCTOBER 18: Cars drive past a red light camera sign on Route 1 October 18, 2002 in Laurel, Maryland. Washington-area sniper investigators have been using red light camera images from around the city in the investigation. (Photo by Mario Tama/Getty Images)

LAUREL, MD - OCTOBER 18: Cars drive past a red light camera sign on Route 1 October 18, 2002 in Laurel, Maryland. Washington-area sniper investigators have been using red light camera images from around the city in the investigation. (Photo by Mario Tama/Getty Images)