Theoretical Research on Longitudinal Profile Design of Superhighways

Table 5

Maximum slope of railways (unit: %).

Railway grades		I			II
		Plains	Hills	Mountains	Plains	Hills	Mountains
Traction types	Electrical motor	0.60	1.20	1.50	0.60	1.50	2.00
	Internal combustion engine	0.60	0.90	1.20	0.60	0.90	1.50

Note. Railways of grade I: passenger train running speeds of 160 km/h, 140 km/h, and 120 km/h; railways of grade II: passenger train running speeds of 120 km/h, 100 km/h, and 80 km/h.