The trains come in two trainset configurations. The first and most common variation is the six-car trainset, which consists of three sets of two EMUs (2+2+2) and uses the maximum platform length of the lines' stations. Each two EMU sets at the front and rear consist of one driving and one non-driving motor car, while the two EMUs between are non-driving motors. There are no gangway connections between the two-car sets. The second variation is a four-car trainset, a more obscure configuration that consists of only two EMU sets (2+2) of one driving car and one non-driving motor at each end, thus with two-thirds the capacity of the more common six-car set. The 2+2 trainsets were once used in full in the service until the massive deployment of 2+2+2 trainsets.