Speed Behavior of Passenger Car on Helical Ramps and Helical Bridges in Mountain Riverside City

Figure 14

Data point (GV_1i, GV_2i) of four ascending helical ramps and four descending ramps shown in GV₁ —GV₂ coordinate, where YZ-A and YZ-D denote the ascending and descending ramp of Fuling Yangtze River Bridge, respectively; WJ-A and WJ-D denote the ascending and descending ramp of Fuling Wujiang Bridge; RQ-A and RQ-D denote the ascending and descending ramp of Rongqiao Helix Bridge; and JK-A and JK-D denote the ascending and descending lane of Jinkai ring bridge.