Editing Tram (section)

===Compressed air===
Paris and Berne (Switzerland) operated trams that were powered by [[Pneumatics|compressed air]] using the [[Mekarski system]].<ref>{{cite news |title=The Mekarski Compressed Air Tramway at Berne, Switzerland |work=Engineering News & American Railway Journal|date=20 April 1893 |volume=34|page=380|location=New York}}</ref><ref>{{cite news |title=Compressed Air as a Street Car Motor |work=[[Scientific American]] |date=5 August 1876 |page=82}}</ref>
Trials on street tramways in Britain, including by the [[London County Council Tramways#Acquisition of tramways|North Metropolitan Tramway Company]] between Kings Cross and Holloway, London (1883), achieved acceptable results but were found not to be economic because of the combined coal consumption of the stationary compressor and the onboard steam boiler.<ref>{{cite news |title=Compressed Air on Tramways |work=[[The Star (1788)|The Star (London)]] |date=7 July 1883 |page=3}}</ref><ref>{{cite news |title=Compressed Air for Street Car Motors |work=The Street Railway Journal |issue=10 |volume=2|date=August 1886 |location=Chicago |page=384}}</ref>