A Clustering Approach to Identify High-Risk Taxi Drivers Based on Self-Reported Driving Behavior

Table 1

Summary of demographic and drivers’ related information.

	Frequency	Percentage (%)
Age
20–29 years	67	12.22
30–39 years	115	20.98
40–49 years	143	26.09
50–59 years	130	23.72
60–69 years	80	14.59
70–79 years	13	2.37
Years of driving experience
1–9	54	9.85
10–19	123	22.44
20–29	197	35.94
30–39	142	25.91
40–49	32	5.83
Years of taxi driving experience
1–9	192	35.03
10–19	219	39.96
20–29	122	22.26
30–39	15	2.73
Weekly driving hours
30–39 hours	96	17.51
40–49 hours	132	24.08
50–59 hours	37	6.75
60–69 hours	79	14.41
70–80 hours	204	37.22
The number of PDO crashes in the past year
0	330	60.21
1	118	21.53
2	59	10.76
3	28	5.10
4	13	2.37
The number of police fines in the past year
0	225	41.05
1	112	20.43
2	83	15.14
3	71	12.95
4	33	6.02
5	18	3.28
6	6	1.09