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

Table 2

Design of controlled variable simulation scenarios.

Road type	Scenarios	Radius (m)	Grade (%)	Speed (km/h)	Simulation purpose
Curved upgrades	1	250, 450, 650, 850	4	80	Study the effect of radius
	2	450	3, 4, 5, 6	80	Study the effect of grades
	3	450	4	60, 70, 80, 90	Study the effect of speeds
Curved downgrades	1	250, 450, 650, 850	−4	80	Study the effect of radius
	2	450	−3, −4, −5, −6	80	Study the effect of grades
	3	450	−4	60, 70, 80, 90	Study the effect of speeds