Factors Affecting Crash Involvement of Commercial Vehicle Drivers: Evaluation of Commercial Vehicle Drivers’ Characteristics in South Korea

Table 3

Descriptive statistics of variables for taxi.

Variable description		Number of samples	Minimum	Maximum	Mean	SD
Dependent variable
Recent crash involvement	0 = not involved in the crash for three years	182,557	—	—	—	—
	1 = involved in the crash for three years	37,287	—	—	—	—
Independent variables
Driver age	21–30	161	0	1	0	0.02
	31–40	2,839	0	1	0.01	0.11
	41–50	24,574	0	1	0.11	0.31
	51–60	86,748	0	1	0.39	0.48
	More than 61	105,522	0	1	0.48	0.5
Driving experience	Years of driving	219,844	0.04	55.25	18.94	9.86
Violation rate	Total number of violations per 10 years	219,844	0	14.5	0.09	0.21
Job change rate	Total number of job changes per year	219,844	0	96	0.2	0.81
Crash rate	Total number of crashes per 10 years	219,844	0	4.41	0.32	0.34