Calculation of the Roadside Clear Zone Width along Highways Based on the Safe Slope

Table 2

Test variables.

Variable	Value
Departure speed (km/h)	40	60	80	100	120
Horizontal curve radius (m)	+∞	600	500	400	300	200
Slope gradient	1:6.5	1:5.5	1:4.5	1:3.5	1:2.5	1:1.5
Pavement height (m)	0.5	2.5	4.5	6.5	8.5	10.5
Vehicle type	“Truck” = 1			“Car” = 0