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.
Community Transit
CT and First Transit signed their third and most recent contract in 2007, continuing the latter's operation of CT commuter service to Seattle. Community Transit debuted the first double-decker buses in the Puget Sound region during a year-long test in 2007, eventually buying its own fleet of Alexander Dennis Enviro500s for its "Double Tall" fleet to be used on commuter services. A PTBA expansion into the unincorporated areas of Cathcart, Clearview and Maltby was attempted during the 2008 general elections, but failed to gain a majority vote. In November 2009, after three years of planning and a year of construction, Community Transit debuted the first bus rapid transit line in Washington, Swift. The service replaced Route 100 on State Route 99 between Aurora Village in Shoreline and Everett Station, featuring 12-minute headways, off-board fare payment and transit signal priority.