Crash Risk Prediction Model of Lane-Change Behavior on Approaching Intersections

Table 9

Descriptive statistics for categorical variables.

Categorical variables	Code	Frequency	Percentage
Risk level; (ICRI)	1: zero risk level	314	45.8%
	2: low risk level	197	28.7%
	3: medium risk level	78	11.4%
	4: high risk level	97	14.1%
Driving tendency; ()	1: aggressive tendency	240	35.0%
	2: conservative tendency	131	19.1%
	3: steady tendency	315	45.9%
Lane-changing type; ()	0: efficiency	318	46.4%
	1: objective	368	53.6%