How Md. uses surveillance, data to track motorists, traffic

Motorists in Maryland may be aware of the cameras that enforce speed and red-light violations, but the state’s tracking practices include other layers to assist in law enforcement efforts, and for traffic and planning purposes. 

Maryland License Plate Recognition Networks Prompt State, Federal Concerns

Each day across the state, hundreds of thousands of motorists’ license plates are recorded, stamped with location and time, and disseminated to various local, state, and federal law enforcement agencies – sometimes to be retained indefinitely.