Driver Behavior on Combination of Vertical and Horizontal Curves of Mountainous Freeways

Table 6

Track prediction model of 𝑝_𝑎 on CVHCs of mountainous freeway.

Vehicle size	Feature cross-sections	Combination of road alignment	Prediction model	Road parameters
		𝑅𝑏  𝑅𝑐  𝑅𝑛
	Entrance	S + L + R	45+320𝑅𝑐^2	170≤𝑅𝑐≤350
		R + L + S	45−300𝑅𝑏^3+320𝑅𝑐^2	170≤𝑅𝑏≤350;  170≤𝑅𝑐≤350
S	Midpoint	S + L + R; R + L + S	45+360𝑅𝑐^4	170≤𝑅𝑐≤350
	Exit	S + L + R	45+300𝑅𝑐^3−450𝑅𝑛^2	170≤𝑅𝑐≤350;  350≤𝑅𝑛≤500
		R + L + S	45+300𝑅𝑐^3	170≤𝑅𝑐≤350
	Entrance	S + L + R	15+300𝑅𝑐	170≤𝑅𝑐≤350
		R + L + S	15−280𝑅𝑏^2+300𝑅𝑐	170≤𝑅𝑏≤350;  170≤𝑅𝑐≤350
L	Midpoint	S + L + R; R + L + S	15+320𝑅𝑐^2	170≤𝑅𝑐≤350
	Exit	S + L + R	15+280𝑅𝑐^2−420𝑅𝑛	170≤𝑅𝑐≤350;  350≤𝑅𝑛≤500
		R + L + S	15+280𝑅𝑐^2	170≤𝑅𝑐≤350