Robo Traffic Cops

Part 1: A Spy In Your Car"Black boxes" are becoming more common in cars. They're designed to record information about the vehicle at the time of an accident, and even give those behind the wheel a shot at lowering their insurance bills.
Part 2: Watching From... EverywhereEZ Pass is one of a number of technologies used for traffic management that -- for some -- stoke privacy concerns.
Part 3: Redlight Camera ControversyDo red-light cameras reduce accidents, or cause them? There are impassioned arguments on both sides.
Part 4: Is It Safety, or Revenue?New Jersey's trial run for red light cameras suffered a setback earlier this summer after critics charged the "yellow" was turning to "red" too fast in some cases.