Traffic Allocation Mode of PPP Highway Project: A Risk Management Approach

Table 4

Scoring of variables.

Number	The variable name	Definition
1	Road condition	5: very good; 4: good; 3: neutral; 2: poorer; 1: very poor
2	Congestion condition	5: very mild; 4: mild; 3: neutral; 2: serious; 1: very serious
3	Income level	5: above 8000 yuan; 4: 6000–8000 yuan; 3: 4000–6000 yuan; 2: 2000–4000 yuan; 1: below 2000 yuan
4	Years of use	2: 1-2 years; 4: 3-4 years; 6: 5-6 years; 8: 7-8 years; 10: 9-10 years
5	Deteriorating degree	0.5: very serious; 0.4: serious; 0.3: neutral; 0.2: mild; 0.1: very mild
6	Time cost coefficient (corresponding to the psychological time)	1.5: very long; 1.2: longer; 1: neutral; 0.8: short; 0.5: very short
7	Charging impedance coefficient (corresponding to willingness to pay)	1.5: very low; 1.2: lower; 1: neutral; 0.8: higher; 0.5: very high
8	Comfort coefficient (corresponding to the overall comfort)	1.5: very comfortable; 1.2: more comfortable; 1: neutral; 0.8: not too comfortable; 0.5: very uncomfortable