Analysis of Work-Zone Crashes Using the Ordered Probit Model with Factor Analysis in Egypt

Table 1

Characteristics and descriptive statistics of factors.

Category	factor	coding	Percentage	Mean	Std. Deviation
Fault drivers	Age	Young Age	67.5%	1.39	0.62
		Middle Age	25.5%
		Elderly Age	7.0%
	Gender	Male	83.8%	1.16	0.37
		Female	16.2%
Environmental	Day of week	Working days	85.2%	1.14	0.35
		Weekend days	14.8%
	Months	Month	Divided by month	4.14	2.93
	Time	Late night-time	21.7%	2.34	1.13
		Daytime rush hour	44.9%
		Daytime	18.8%
		Night-time rush hour	6.4%
		Early night-time	8.1%
	Weather condition	Clear	48.7%	1.71	0.78
		Fog	31.6%
		Rain	19.7%
Work-zone information	Type of surface construction	Base	18.0%	2.97	1.43
		Asphalt	24.1%
		Remove Asphalt	26.4%
		Milling	6.4%
		Concrete	25.2%
	Number of lane closures	One	47.0%	1.47	0.50
		Two	53.0%
Road character	Road Character	Straight & level	39.7%	2.34	1.26
		Curve	14.5%
		U-Turn	18.0%
		Straight & Grade	27.8%
	Road class	Rural	68.1%	1.32	0.47
		Urban	31.9%
Crash characteristics	Vehicle type	Heavy-vehicle	39.7%	0.40	0.49
		Other	60.3%
	Crash type	Rear end	39.3%	1.41	0.89
		Fixed Object	13.7%
		Sideswipe	27.9%
		Angle-side	17.2%
		Pedestrian	1.9%
	Number of vehicle in collision	One vehicle	18.0%	0.82	0.38
		More than one	82.0%
Crash severity	Crash severity	No injury	24.3%
		Injury	60.3%
		Fatal injury	15.4%