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

Table 11

Risk analysis of tractor-semitrailer on the general 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	0.34	0.45	Safe	−3	70	0.66	0.30	0.46	Safe
	75	0.65	0.37	0.48	Safe		75	0.65	0.34	0.50	Safe
	80	0.64	0.40	0.51	Safe		80	0.64	0.37	0.54	Safe
	85	0.63	0.43	0.55	Safe		85	0.63	0.41	0.58	Safe
	90	0.61	0.46	0.58	Safe		90	0.61	0.45	0.63	Warning state of rollover
4	70	0.66	0.33	0.43	Safe	−4	70	0.66	0.32	0.48	Safe
	75	0.65	0.35	0.46	Safe		75	0.65	0.36	0.52	Safe
	80	0.64	0.38	0.50	Safe		80	0.64	0.39	0.56	Safe
	85	0.63	0.41	0.53	Safe		85	0.63	0.43	0.61	Warning state of rollover
	90	0.61	0.45	0.57	Safe		90	0.61	0.47	0.66	Warning state of rollover
5	70	0.66	0.31	0.42	Safe	−5	70	0.66	0.34	0.51	Safe
	75	0.65	0.34	0.45	Safe		75	0.65	0.38	0.55	Safe
	80	0.64	0.37	0.48	Safe		80	0.64	0.41	0.59	Safe
	85	0.63	0.40	0.52	Safe		85	0.63	0.45	0.63	Warning state of rollover
	90	0.61	0.43	0.56	Safe		90	0.61	0.49	0.68	Warning state of rollover
6	70	0.66	0.30	0.41	Safe	−6	70	0.66	0.36	0.53	Safe
	75	0.65	0.33	0.44	Safe		75	0.65	0.40	0.57	Safe
	80	0.64	0.36	0.47	Safe		80	0.64	0.43	0.61	Warning state of rollover
	85	0.63	0.39	0.50	Safe		85	0.63	0.47	0.66	Warning state of rollover
	90	0.61	0.42	0.54	Safe		90	0.61	0.51	0.71	Warning state of rollover