Program Information Metro (the Los Angeles County Metropolitan Transportation Authority) is unique among the nation???s transportation agencies. We serve as transportation planner and coordinator, designer, builder and operator for one of the country???s largest, most populous counties. More than 9.6 million people ??? nearly one-third of California???s residents ??? live, work, and play within our 1,433-square-mile service area. Vision: Metro provides excellence in service and support. Mission: Metro is responsible for the continuous improvement of an efficient and effective transportation system for Los Angeles County