Bay Area Rapid Transit rolling stock
The rolling stock of the Bay Area Rapid Transit (BART) system consists of 782 self-propelled electric multiple units serving the main BART system, built in four separate orders, four permanent three-unit cable-car trainsets in a Cable Liner system connecting Oakland San Francisco Bay Airport, and eight Stadler GTW diesel multiple units on the eBART branch line. Pre-pandemic, to run a typical peak morning commute, BART required 579 cars.
Source: Wikipedia — Bay Area Rapid Transit rolling stock (CC BY-SA 4.0)