Investigating the Effect of Urban New Technologies on the Iranian Lorry Drivers’ Behavior

Table 2

Evaluated variables with the frequency of each classification.

Variables	Classes	Repetition percentage	Variables	Classes	Repetition percentage
Offenses	Overload	21.7	Mileage per year (thousand kilometers)	0–20	6.1
	Seat belts	20.4		21–60	14
	Speeding	15.1		61–100	10.2
	Technical defect	24.7		101–150	23.5
	Talking on the phone	14.5		151–200	21.3
	Not having a towing worksheet	3.5		> 200	24.9
Heavy vehicle drivers	Single driver	87.5
	Two drivers	12.5	Vehicle ownership	The driver is the owner	55.1
Heavy vehicle type	Pickup	18.4		The driver is a partner	22.1
	Truck	29		The driver is not the owner	22.8
	Single axle	19.2	How to get income	In terms of tonne-kilometer	44.6
	Pair axle	11.3		By number of services	33.5
	Thriller	22.1		In hours	0.4
Marital status	Single	14.9		Fixed salary	21.6
	Married	85.1	Discharges and loading per month	One or two	0.2
Driver’s age	< 30	12.1		Three or four	9
	30–39	31.4		Five or six	23.7
	40–49	34.5		Seven or eight	25.6
	≥ 50	22.1		Nine to eleven	15.7
Education	High school	67.8		More than twelve	25.9
	Diploma	26.6	Sleep duration in a day	< 6	36.3
	Advanced diploma	4.7		6–8	45.9
	Bachelor	0.9		> 8	17.8
	Above bachelor	0	Sleep quality (business days)	Never	58
Vehicle’s life	1–5	12.2		Sometimes	9.1
	6–10	14.2		Always	22.5
	11–15	20.6	Driving experience	1–10	31
	16–20	12		11–20	30.5
	> 20	41		> 20	38.5