Bombardier vehicle design is
articulated using
bogies between carriages. The Z 27500 are available in three or four-car unit. The train can be operated as a multiple-unit control with up to three units, with other Z 27500 or the dual-mode version Diesel/ (
B 81500). The train is equipped with 2
pantographs on the intermediate car. Their capacity offers 160 seats in a three-car unit, 220 in a four-car set. The inter-carriage passages have wide, open
gangway connections, limiting
bottlenecking. The Z 27500 from
Lorraine region can be operated as a multiple-unit control with the Diesel variant (), specifically equipped with a command to raise the pantograph. Whereas the first trains were delivered in their three-car set version (with an intermediate car), several regions later added a second intermediate car, in order to increase their capacity from 160 to 220 seats. == Photo gallery ==