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

Table 9

Results of statistical analysis for LTR cornering on upgrades and downgrades.

Road type	Independent variable	B	t	value
Curved upgrades	Constant	0.281	60.183	0.001
		0.017	113.230	0.001
		−0.014	−14.143	0.001
	Curved downgrades	Constant	0.112	8.347	0.001
		0.022	50.799	0.001
		−0.025	−8.792	0.001