max. gradient of track 33‰
min. curve negotiation radius 150 m
design speed of dig and fill 80 km/h
max. thickness of paving 500 mm
max. width of dig roadbed 4,050~6,600 mm
max. depth of dig roadbed 1,200 mm
service temperature －10℃～50 ℃
max. altitude 2,000 m