sentences:  The trains were built jointly by Kinki Sharyo and Tokyu Car, with a steel body design based directly on the earlier 253 series EMUs built for "Narita Express" services, although the window height was increased by 100 mm.It is the first JR East limited express rolling stock to feature VVVF Insulated Gate Bipolar Transistor traction control system, based on the results of trials with the prototype 209 series commuter EMUs.DT56E bogies are used on motored cars, and TR241E bogies are used on trailer cars.