Amtrak California (reporting mark CDTX) is a brand name used by the California Department of Transportation (Caltrans) Division of Rail on three state-supported Amtrak rail routes within the US State of California, the Capitol Corridor, the Pacific Surfliner, and the San Joaquins. It also includes an extensive network of Thruway Motorcoach bus connections, operated by private companies under contract. The three lines shared the use of Amtrak California branded Thruway buses and trainsets.