 The Hardanger Line was built with a minimum curve radius of 180 metres ( 590 ft ) , a maximum gradient of 4 @.@ 5 percent and built with standard gauge tracks weighing 25 kilograms per meter ( 50 lb / yd ) , later increased to 30 kilograms per meter ( 60 lb / yd ) . In 1980 , the 3 kilometres ( 2 mi ) section from Voss to Palmafoss had a permitted axle load of 18 tonnes ( 18 long tons ; 20 short tons ) and a maximum speed of 40 km / h ( 25 mph ) . From Palmafoss to Granvin , the permitted axle load was 12 tonnes ( 12 long tons ; 13 short tons ) and the maximum speed was 50 km / h ( 31 mph ) . The system had stations with buildings at Voss , Palmafoss , <unk> , Skjervet , Nesheim and Granvin . In addition , there were halts at <unk> , Kinne , <unk> , Mala , <unk> , <unk> , <unk> , <unk> and <unk> . 
