https://en.wikipedia.org/wiki/Hitachi_Rail_Italy_Driverless_Metro#Rolling_stock
The line uses 256 ft (78 m) four-car train sets, each with the capacity to carry nearly 800 passengers,[213] similar in weight to heavy rail systems elsewhere in the United States (such as the Chicago 'L' in Chicago, Illinois). https://en.wikipedia.org/wiki/Skyline_(Honolulu)#Rolling_stock
The articulated, four-car trains are 50 metres (160 ft) long. https://en.wikipedia.org/wiki/Thessaloniki_Metro#Stations,_depot_and_rolling_stock
https://en.wikipedia.org/wiki/Pittsburgh_Light_Rail#Current_fleet LRT
https://en.wikipedia.org/wiki/MetroLink_(St._Louis)#Rolling_stock