Exploring the Influence of Truck Proportion on Freeway Traffic Safety Using Adaptive Network-Based Fuzzy Inference System

Table 3

Factor level table of the parameters to be determined.

Level		CC1 headway time (s)		CC2 “following” variation (m)		CC3 threshold for entering “following”		Min. headway (front/rear) (m)
1		0.5		3		−9		0.3
2		0.9		4		−8		0.5
3		1.3		5		−7		0.7
4		1.7		6		−6		0.9