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.
GO Transit fleet
GO Transit currently operates two types of buses: single-decker highway coaches, constituting 75% of the active fleet; and commuter-type double-decker buses, constituting the remaining 25%. All vehicles run on diesel fuel.