Analysis of Nonsevere Crashes on Two- and Four-Lane Urban and Rural Highways: Effects of Wet Pavement Surface Condition

Table 4

Descriptive statistics of the nonsevere crash rates occurring on dry pavement surfaces across the categorical variables and tests of normality for the selected eight routes.

Variable		N	Mean	St. Dv.	Skewness	Kurtosis	Sig.
Rural/Urban	Rural	712	278	439	4.922	31.890	0.001
	Urban	736	527	688	2.496	8.285	0.001
No. of Lanes	Two	732	422	610	4.092	25.215	0.001
	Four	716	386	573	2.672	8.533	0.001
Lighting	Dark	434	332	440	2.866	10.970	0.001
	Light	1014	435	644	3.113	12.255	0.001
Weather	Cloudy	293	412	648	3.973	20.168	0.001
	Clear	1155	403	577	2.944	10.889	0.001