The Orangeline Development Authority is a joint powers agency formed to pursue development of an environmentally friendly, state-of-the-art high speed transit system in Southern California.

The Authority is currently comprised of 14 public agencies:

City of Artesia
City of Bell
City of Bellflower
City of Cerritos
City of Cudahy
City of Downey
City of Glendale

City of Huntington Park
City of Maywood
City of Palmdale
City of Paramount
City of Santa Clarita
City of South Gate
City of Vernon

With supporting agencies that include Caltrans, District 7, Metropolitan Transportation Authority (Metro), Gateway Cities Council of Governments.