1933 Stockholm-Malm electrified. Steel body coaches. Inlandsbanan finished, which makes the mainline network essentially finished. What remained was the line between Ulricehamn and J nk ping, which was finished in 1940. The Swedish railways are at their largest with a total lenght of 16900 km.
Parliament decides to natinalize private railways.
The process takes about 3 decades, with small ones purchased first and the larger ones operated under their own identities into the 1980's. 1944 Class M, CoCo, a new class of powerful freight engines enters service. The State Railways purchase two large 3-axle diesels from England. Electric Bo'Bo' express engines, class Ra, used on Stockholm- G teborg, travel time 4 hours. The Swedish railways have a total length of 12800 km.