Table 4.

Marginal effects of significant variables in the spatial generalized ordered logit model.

Variable	Light Crashes (%)	Medium Crashes (%)	Severe Crashes (%)
Precipitation	−0.6	1.6	−1.0
Rear-end crash	47.5	−47.3	−0.2
Angle crash	36.1	−38.8	2.7
Professional driver	−32.8	27.2	5.6
Coach	−7.4	5.6	1.8
Other vehicle	−11.0	8.3	2.7
Non-local vehicle	−4.3	3.4	0.9
EMS response time	−0.5	0.4	0.1
Horizontal curvature	−1.9	1.5	0.4
Vertical grade	0.0	−2.2	2.2
Afternoon	0.0	3.3	−3.3
Evening	6.7	−5.4	−1.3