Double-decker bus
With the exception of coaches, double-decker buses are uncommon in the United States. Many private operators, such as Megabus, run by Coach USA, employs double-decker buses on its busier intercity routes.
University of California, Davis
UC Davis is also well known for its bus service, Unitrans, and its trademark London double decker buses. It has been in operation since 1968 and is believed to be the only general purpose (non-sightseeing) transit system in the U.S. to operate vintage double deck buses in daily service. The system is operated and managed entirely by students and offers fixed-route transportation throughout the city. There is also an inter-campus bus service that ferries back and forth between UC Davis and UC Berkeley twice daily, from Monday to Friday. Davis is also one of the busiest stations of the Capitol Corridor intercity railroad service operated by Amtrak between the Bay Area and Sacramento.