Modeling of Lateral Stability of Tractor-Semitrailer on Combined Alignments of Freeway

Table 10

Risk Analysis of Tractor-semitrailer on the Ultimate Minimum Horizontal Curve Radius Combined with Upgrades and Downgrades.

i/%	V/(km/h)				Risk status	i/%	V/(km/h)				Risk status
3	70	0.66	0.45	0.57	Safe	−3	70	0.66	0.43	0.62	Warning state of rollover
	75	0.65	0.49	0.62	Warning state of rollover		75	0.65	0.49	0.68	Warning state of rollover
	80	0.64	0.54	0.67	Warning state of rollover		80	0.64	0.54	0.75	Warning state of rollover
	85	0.63	0.59	0.73	Warning state of rollover		85	0.63	0.60	0.82	Dangerous state of rollover
	90	0.61	0.64	0.79	Skidding, warning state of rollover		90	0.61	0.67	0.90	Skidding, dangerous state of rollover
4	70	0.66	0.44	0.56	Safe	−4	70	0.66	0.45	0.64	Warning state of rollover
	75	0.65	0.48	0.61	Warning state of rollover		75	0.65	0.51	0.71	Warning state of rollover
	80	0.64	0.53	0.66	Warning state of rollover		80	0.64	0.56	0.78	Warning state of rollover
	85	0.63	0.58	0.72	Warning state of rollover		85	0.63	0.62	0.85	Dangerous state of rollover
	90	0.61	0.63	0.78	Skidding, warning state of rollover		90	0.61	0.69	0.92	Skidding, dangerous state of rollover
5	70	0.66	0.42	0.54	Safe	−5	70	0.66	0.47	0.67	Warning state of rollover
	75	0.65	0.47	0.59	Warning state of rollover		75	0.65	0.53	0.73	Warning state of rollover
	80	0.64	0.51	0.65	Warning state of rollover		80	0.64	0.58	0.80	Dangerous state of rollover
	85	0.63	0.56	0.70	Warning state of rollover		85	0.63	0.64	0.87	Skidding, dangerous state of rollover
	90	0.61	0.62	0.76	Skidding, warning state of rollover		90	0.61	0.71	0.95	Skidding, dangerous state of rollover
6	70	0.66	0.41	0.53	Safe	−6	70	0.66	0.47	0.67	Warning state of rollover
	75	0.65	0.45	0.58	Safe		75	0.65	0.53	0.73	Warning state of rollover
	80	0.64	0.50	0.63	Warning state of rollover		80	0.64	0.60	0.83	Dangerous state of rollover
	85	0.63	0.55	0.69	Warning state of rollover		85	0.63	0.66	0.90	Skidding, dangerous state of rollover
	90	0.61	0.60	0.75	Warning state of rollover		90	0.61	0.73	0.97	Skidding, dangerous state of rollover