The 71-630 is a proposed Russian low floor tram intended for Moscow and Riga. These rail vehicles are produced by Ust'-Katav Vagon-building plant (UKVZ, УКВЗ, Усть-Катавский Вагоностроительный Завод имени С. М. Кирова - Russian abbreviature and full name). Only one car was built in 2006. It was tested with passengers in Moscow in 2008-2010, and stay in Krasnopresnenskoye depot.
References
71-630 Wikipedia(Text) CC BY-SA