Double-decker bus
The first commercial horse-drawn double-decker omnibuses were introduced in England in 1847 by Adams & Co. of Fairfield, Bow, then improved upon by John Greenwood, who introduced a new double-decker in 1852.
Double-decker bus
New York City phased out double-decker buses in 1960. They briefly returned from 1976 to 1978, although they only ran in Manhattan. In 2008 the Metropolitan Transportation Authority briefly ran Van Hool double-decker buses on its Fifth and Madison Avenues Line. However, that year's financial crisis meant the end of the trial period.