The BART to Antioch extension DMU trains run on standard gauge rail. BART has 669 legacy revenue vehicles comprised of 59 A2 cars, 389 B2 cars, 150 C1 cars and 80 C2 cars in the fleet. Car seating capacity - 72 in both the Rohr-built A- and B-Cars, and 64 in C-Cars and C2-Cars.