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.
Double-decker bus
The first French double-decker bus was brought into service in Paris in 1853; it was a horse-drawn omnibus. The upper floor was cheaper and often uncovered.