Built in 1938, Rm 30 was the first of 6 Standard railcars. They were designed with a driving cab at each end and seating in two compartments with a centre toilet. When built Rm30 had seats for 36 passengers in second class and 12 in first class. This was changed later when the first class seats were removed and 16 second class seats fitted in there place. The original Leyland Diesel engines were replaced in the early 1950s with Meadows diesel engines. They are mounted under the driver’s seat at both ends.