Jeff Crossfield News Today

Taking The High-Tech Road Sarah Harney   |   May 2003 For nearly two years, traffic managers in Kentucky eavesdropped. Their target: a Louisville intersection that had become the scene of an inordinate number of accidents. They set up two sound-sensitive cameras to record traffic continuously. When the cameras recorded the common sounds of an accident--the squeal of tires, the smack of metal hitting metal--the system stored the film clips from four seconds before...