trains



https://en.wikipedia.org/wiki/Massachusetts_Bay_Transportation_Authority#Subways_and_elevated_railways

https://en.wikipedia.org/wiki/MBTA_Subway#Rolling_stock


Specifications
Car body constructionStainless Steel
Train length600 feet (182.88 m) (8-car train)
Car length75 feet (22.86 m)[57]
Width10 feet 1 34 inches (3.09 m)
Height10 feet 10 inches (3.30 m)
Floor height40 inches (1,016 mm)
DoorsSliding, 6 per car
Maximum speed75 mph (121 km/h)[57]
Weight80,000 lb (36,000 kg)
https://en.wikipedia.org/wiki/Washington_Metro_rolling_stock#7000-series


The cars are 75 feet (23 m) long, 10 feet (3.0 m) wide and have a top design speed of over 70 mph (110 km/h). They are semi-permanently attached in married pairs, and joined up to form 4-car trains, which is the normal train length.
https://en.wikipedia.org/wiki/Metrorail_(Miami-Dade_County)#Rolling_stock

The platform at each Metrorail station is long enough to accommodate six-car-long trains; the Dadeland North, Earlington Heights, and Government Center station platforms are long enough to accommodate eight-car-long trains. In-service trains are usually either four or six cars long; in the evening it is not uncommon for Miami-Dade Transit to link two out-of-service trains together before returning them to Lehman Yard.
https://en.wikipedia.org/wiki/Metrorail_(Miami-Dade_County)#Trackage

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Trains



With 179 stations, nine lines and over 2.3 billion users each year, the Tokyo Metro is the heart of Tokyo’s public transport system. 
https://www.youtube.com/watch?v=xzkU6tmdImY


https://en.wikipedia.org/wiki/Sydney_Trains#Rail_Lines ,
http://www.sydneytrains.info/about/fleet

SYDNEY and its wonderful METRO
https://www.youtube.com/watch?v=WqlBywEmFBo

https://en.wikipedia.org/wiki/Sydney_Trains_fleet#Train_sets
8 car trains
https://en.wikipedia.org/wiki/Sydney_Trains_A_set
Train length163.1 m (535 ft 1 in)
Car length20.000 m (65 ft 7 in)
Width3.035 m (9 ft 11 in)
Height4.410 m (14 ft 6 in)
Maximum speed130 km/h (81 mph)