The Harbor Transitway is an shared-use bus corridor (transitway) and high-occupany toll roadway that runs in the median of Interstate 110 (Harbor Freeway) in Southern California. The main bus service operating on the busway is the Metro Silver Line which was introduced on December 13, 2009. The Metro Silver Line bus rapid transit line runs on the Harbor Transitway from Harbor Gateway Transit Center to Downtown Los Angeles and continues to El Monte Bus Station. The line operates daily with frequent service. In addition to Metro Silver Line, other Metro bus and municipal bus routes also operate on the Harbor Transitway. They include Metro Express: 442, 450, 460 and 550,Torrance Transit: 4,Gardena Transit: 1X and Orange County Transportation Authority: 701, 721. Metro Express Lines: 442, 450 and 550 operate only during weekdays peak hours. Metro Line 442 operates peak a.m. northbound only and southbound p.m. only. Torrance Transit line 4, Gardena Transit line 1X, and Orange County Transportation Authority: 701, 721 operate only during weekday peak hours. Metro Express line 460 operates daily along with the Metro Silver Line. Busway bus lines originate from Downtown Los Angeles and El Monte, with final destinations in Disneyland, and Disney California Adventure Park located in Anaheim, Knott's Berry Farm, Artesia, Fullerton, Gardena, Hawthorne, Huntington Beach, San Pedro and Torrance.