The ergonomic design approaches are not sufficient on the railway system especially on the locomotives` cab in Korea. Moreover, the specifications on the design are not provided as a legal condition. In this study, the domestic driver`s anthropometirc characterics were compared against the UIC`s design criteria used in the cab design. The problems come from drivers` physical characteristics are verified with the rolling stock running in Korea meeting the visibility and operability of the UIC`s. These studies including environmental factors (air conditioning, noise, vibration, control desk layout, seats etc.) are useful on estabilishing the design specification of the driver`s cab.