The Fifth Avenue Bus Company was one of a few double-decker bus

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 transportion role. Double-decker buses are also commonly found in certain parts of Europe, Asia, and former British colonies and protectorates...

 manufacturers outside of Europe. Based in New York City

New York City

New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

, it provided double-decker buses to New York and Toronto

Toronto

Toronto is the provincial capital of Ontario and the largest city in Canada. It is located in Southern Ontario on the northwestern shore of Lake Ontario. A relatively modern city, Toronto's history dates back to the late-18th century, when its land was first purchased by the British monarchy from...

. Most North America

North America

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

n transit agencies ended use of double-decker buses in favor of single deck buses.
The company was actually called the New York City Transportation Company and was the manufacturing arm and parent company of the Fifth Avenue Coach Company. Its products were the A, L and 2L type double deckers and J type single decker.