 Norsk Spisevognselskap A / S , often abbreviated NSS or shortened to Spisevognselskapet , was a Norwegian state enterprise which operated restaurant carriages on Norwegian trains and restaurants at railway stations and railway hotels . The company was established in December 1918 , and started a catering service in 1919 . Originally owned by the Norwegian Trunk Railway , it was acquired by the state in 1926 . <unk> served in the restaurant carriages were relatively expensive , although they were available to all passengers . In the 1950s , the company began using serving trolleys on trains . 
