 Initially , the freight transport was small . During the war , transport increased many @-@ fold , particularly because of export of lumber . In 1966 , a spur was built just south of Palmafoss to Voss <unk> . By the end of the 1960s , the line was transporting 30 @,@ 000 tonnes ( 30 @,@ 000 long tons ; 33 @,@ 000 short tons ) . During the late 1970s , the amount of transport fel dramatically , and reached 11 @,@ 000 tonnes ( 11 @,@ 000 long tons ; 12 @,@ 000 short tons ) in 1980 . Nearly half of this was import of lumber to three sawmills and manufacturing companies . In 1972 , Linjegods established a daily scheduled truck service to Granvin . Although Linjegods used train to and from Voss , the service from Voss to Granvin was operated parallel to the railway . In 1975 , <unk> Globe also established a similar service between Voss and Granvin . During the late 1970s , the manufacturer <unk> experienced a large drop in the demand of ferroalloys , reducing production — and thus transport on the line — by 10 @,@ 000 tonnes ( 9 @,@ 800 long tons ; 11 @,@ 000 short tons ) . Another issue for the line was that it has a permitted axle load of only 12 tonnes ( 12 long tons ; 13 short tons ) ; this either <unk> optimal wagon weights on the main lines , or causing transshipment at Voss , both causing increased costs . In 1977 , the average distance for cargo shipped from the Hardanger Line was 444 kilometres ( 276 mi ) by rail . 
