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
In the 1970s a number of former London double decker buses were imported for museums, such as the Museum of Transport and Technology who used AEC Regent Low Height (RLH) buses to connect museum sites and for charters. Sydney double decker and more London buses of various models (AEC Regent III RT, AEC Routemasters etc.) were imported by charter and tourist operators and slowly became more commonplace. Bridge heights and shop verandas restricted the use of double deckers around New Zealand until congestion and high public transport use required some innovative solutions.