Drivers’ Risk Perception and Risky Driving Behavior under Low Illumination Conditions: Modified Driver Behavior Questionnaire (DBQ) and Driver Skill Inventory (DSI)

Table 9

Differences according to age for the DBQ and DSI factors.

	Age 20–25	Age 26–34	Age 35–44	Age 45–55	F-statistic
	With/without streetlight	With/without streetlight	With/without streetlight	With/Without streetlight
	Mean (S.D.)	Mean (S.D.)	Mean (S.D.)	Mean (S.D.)
Error	1.52 (0.56)/1.64 (0.68)	1.55 (0.50)/1.61 (0.57)	1.42 (0.40)/1.45 (0.48)	1.22 (0.27)/1.28 (0.37)	2.958/2.896
Lapse	1.64 (0.60)/1.81 (0.76)	1.65 (0.48)/1.80 (0.60)	1.66 (0.46)/1.70 (0.56)	1.29 (0.27)/1.35 (0.41)	3.105/3.164
Violation	1.69 (0.62)/1.69 (0.63)	1.80 (0.63)/1.80 (0.62)	1.60 (0.49)/1.60 (0.49)	1.45 (0.56)/1.45 (0.56)	2.761/2.761
Risk perception	3.33 (0.91)/3.07 (0.84)	3.57 (0.93)/3.28 (0.95)	3.46 (0.81)/3.15 (0.86)	4.03 (0.82)/3.92 (0.95)	2.769/3.943
Technical driving skill	3.25 (0.90)/3.25 (0.90)	3.53 (1.00)/3.53 (1.00)	3.47 (0.79)/3.47 (0.79)	3.93 (0.77)/3.93 (0.77)	2.401/2.401

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