Editing Tram (section)

===Modern development===
In the mid-20th century many tram systems were disbanded, replaced by buses, [[trolleybus]]es, automobiles or [[rapid transit]]. The [[General Motors streetcar conspiracy]] was a case study of the decline of trams in the United States. In the 21st century, trams have been re-introduced in cities where they had been closed down for decades (such as [[Tramlink]] in London), or kept in heritage use (such as [[Spårväg City]] in Stockholm). Most trams made since the 1990s (such as the [[Bombardier Flexity]] series and [[Alstom Citadis]]) are articulated [[low-floor tram]]s with features such as [[regenerative braking]].

In March 2015, [[CSR Corporation Limited|China South Rail Corporation]] (CSR) demonstrated the world's first hydrogen [[fuel cell vehicle]] tramcar at an assembly facility in [[Qingdao]]. The chief engineer of the CSR subsidiary [[CSR Sifang Co Ltd.]], Liang Jianying, said that the company is studying how to reduce the running costs of the tram.<ref>{{cite web |date=21 March 2015 |title=China Presents the World's First Hydrogen-Fueled Tram |work=Yibada News |url=http://en.yibada.com/articles/21142/20150321/china-worlds-first-hydrogen-fueled-tram.htm# |last1=Salvacion |first1=Manny }}</ref><ref>{{cite web |date=24 March 2015 |title=China Develops World's First Hydrogen-Powered Tram |url=http://www.iflscience.com/technology/china-develops-worlds-first-hydrogen-powered-tram |work=IFLScience}}</ref>