The Los Angeles County Metro Rail is the current mass transit rail system operating in Los Angeles. It is run by the Los Angeles County Metropolitan Transportation Authority and is the descendant of the Pacific Electric Red Car system and Los Angeles Railway Yellow Car lines which operated in the area from the early to middle twentieth century. Currently, Metro Rail boasts three light rail lines and two rapid transit subway lines, altogether totaling 73.1 miles of rail, 62 stations, and approximately 276,900 daily weekday boardings as of June 2006.