Since the different lines of the Istanbul Metro have different specifications, most notably car length, there is no uniform length for platforms. The oldest platforms of the network, built between 1989 and 2002 on the M1 line, are 100 m (330 ft) and can accommodate trains up to 4 cars long. Platforms on the M2, M3 and M4 lines span about 150 m (490 ft) and can each accommodate trains up to 8 cars long.