The Modern Tramway again. .....
Articulated trams are relatively normal in today's world. There was a time when this was not the case. Much of Europe, save for the Italians, preferred to create tram trains from individual units and trailers. This was seen as being a more flexible policy.
Stuttgart decided to to try out articulated vehicles in the 1950s.
http://rogerfarnworth.com/2023/06/15...for-stuttgart/