Exploring Driver Injury Severity in Single-Vehicle Crashes under Foggy Weather and Clear Weather

Table 5

Average marginal effects of significant variables.

Variable	Description	SVCC		SVCF
		Slight injury	SFI	Slight injury	SFI
Driver characteristics
Gender	Male	−0.061	−0.003	−0.081	−0.045
Age	<30	–	–	–	−0.032
	>60	0.083	0.087	0.067	0.119
Seat belt used	Not used	−0.012	0.076	−0.010	0.071
Alcohol-impaired	Yes	0.008	0.129	−0.016	0.155
Career	Self-employed	–	−0.021	–	–
	Farmer	–	−0.015	–	0.036
Driving license	With license	−0.049	−0.018	–	−0.030
Vehicle characteristics
Vehicle type	Motorcycle	0.341	0.047	0.356	0.144
	Pickup	−0.054	−0.015	−0.067	−0.043
	Truck	–	−0.029	–	−0.037
Road characteristics
Road surface	Non-dry	–	–	–	−0.032
Traffic controls	Signal control	–	–	0.048	0.026
Other characteristics
Area	Rural	0.023	0.011	–	0.014
Week	Weekend	–	0.023	–	–
Time of accident	07 : 00–09 : 00	−0.031	–	−0.054	–
	20 : 00–24 : 00	0.091	0.036	0.031	0.024
	00 : 00–07 : 00	–	0.041	−0.008	0.074
Crash type	Fixed object	0.107	0.201	0.061	0.266
	Pedestrian	−0.114	−0.052	−0.133	−0.085

Note: – means this variable is not significant in the model.