Sheffield trams (Supertram) approaching a stop in Church Street, Cathedral Quarter, Sheffield, Yorkshire, England

Sheffield tram (Supertram) on overhead track approaching Commercial Street from Park Square, Sheaf Valley Quarter, Sheffield, Yorkshire, England

Sheffield Railway station seen from the east with Supertram stop in foreground and city centre behind, Granville Street, Sheffield, Yorkshire, England

Tram, the main transport system in Budapest, Hungary, Europe

Tram, the main transport system in Budapest, Hungary, Europe

Tram system in Birmingham which runs from Birmingham to Wolverhampton, Birmingham, England, United Kingdom, Europe

Tram system in Birmingham which runs from Birmingham to Wolverhampton, Birmingham, England, United Kingdom, Europe

Elevated view of traffic and tram on major street during daytime, Hondori, Naka Ward, Hiroshima, Honshu, Japan

Green tram and Nam Tin building, North Point, Hong Kong, China

A vertical shot of a Hong Kong Tram passing the colonial Old Supreme Court building, Hong Kong, China

Two traditional red trams in the historic centre of Lisbon, Portugal, Europe

Elevated view of traffic and tram on major street during daytime, Hondori, Naka Ward, Hiroshima, Honshu, Japan

Elevated view of traffic and tram on major street during daytime, Hondori, Naka Ward, Hiroshima, Honshu, Japan

Elevated view of traffic and tram on major street during daytime, Hondori, Naka Ward, Hiroshima, Honshu, Japan

View of city tram on major street during daytime, Hondori, Naka Ward, Hiroshima, Honshu, Japan

View of city tram and Nobel Peace Center, Oslo, Norway, Scandinavia, Europe

Tramway in front of the Ilot Gruner, architect Manuelle Gautrand, Administration building, Saint-Etienne, Loire department, Auvergne-Rhone-Alpes region, France, Europe

New public transport ttram system by St Andre Cathedral, Bordeaux, France.

Public transport tram system runs in old Bordeaux, France.

The tram system in the city of Dijon, Burgundy, France, Europe

LUAS urban public transport light rail tram system, city of Dublin, Republic of Ireland, Europe

LUAS urban public transport light rail tram system, city of Dublin, Republic of Ireland, Europe

New public transport tram system by St Andre Cathedral, Bordeaux, France

Intercity-Express train, ICE, and a regional train, suburban train, on the track, railway, track network next to the main railway station in Essen, Essen, North Rhine-Westphalia, Germany, Europe

Bernina Express in Alp Gruem, Val Poschiavo, Bernina, Graubuenden, Switzerland, Europe

Supporting system, Wuppertal Floating Tram suspended monorail, Wuppertal, Bergisches Land region, North Rhine-Westphalia, Germany, Europe

Aerial view, solar sails, tram station with solar panels on the roofs, Veltins Arena, Gelsenkirchen, Ruhr Area, North Rhine-Westphalia, Germany, Europe