Development of Degree-of-Priority Based Control Strategy for Emergency Vehicle Preemption Operation

Table 1

Fuzzy rules in degree of priority classification model.

(a) Fuzzy rules of preemption demand intensity calculation

𝑈𝑘	𝐼pd
	𝑃𝑙𝑘: VH	H	M	L	VL
VH	VH	VH	H	H	M
H	VH	H	H	M	L
M	H	H	M	L	VL
L	H	M	L	VL	VL
VL	M	L	VL	VL	VL

(b) Fuzzy rules of preemption impact intensity calculation

𝑥𝑗	𝐼pi
	𝑣𝑑𝑗: VH	H	M	L	VL
VH	VH	VH	H	M	M
H	VH	H	M	L	L
M	H	M	M	L	VL
L	M	L	L	VL	VL
VL	L	VL	VL	VL	VL

(c) Fuzzy rules of emergency vehicle preemption priority classification

𝐼pd	𝐷𝑝
	𝐼pi: VH	H	M	L	VL
VH	VH	VH	VH	VH	VH
H	H	H	VH	VH	H
M	M	H	VH	H	M
L	L	L	M	L	VL
VL	VL	VL	L	L	VL