Exploring Risk Factors with Crash Severity on China Two-Lane Rural Roads Using a Random-Parameter Ordered Probit Model

Table 1

Classification of the seriousness of crashes on two-lane rural roads.

Crash severity level	Crash injury severity	Criteria for the classification
I	Minor accident	Number of deaths = 0, number of injured = 0
II	Serious accident	Number of deaths = 0, number of injured = 1∼3
III	Malignant accident	Number of deaths > 1, number of injured > 3