Double-decker Bus

A double-decker bus is a bus that has two storeys or 'decks'. Global usage of this type of bus is more common in outer touring than in its intra-urban transportation role. Double-decker buses are also commonly found in certain parts of Europe, Asia, and former British colonies and protectorates such as (Hong Kong and Singapore. Red double-decker buses are usually associated with London.

Almost all double-deckers have a single, rigid chassis. Some double-deckers are used solely for sight-seeing tours; as William Ewart Gladstone observed, "...the way to see London is from the top of a 'bus". (Gladstone was referring to London's once ubiquitous double-deck horse drawn omnibuses, rather than a motor bus).

Cities listed here use double-decker buses as part of their regular mass transit fleet. Cities with only tourist and sightseeing double-decker buses are excluded.