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

Table 8

Test for equality of mean, homogeneity of variances, and similarity in distribution of the wet pavement crashes across the categorical variables.

Variables		Levene’s Test	Welch’s Test	Kruskal-Wallis Test	Games-Howell Test
Rural/Urban	Test Stat.	21.160	17.440	8.610	4.180
	-Value	0.001	0.001	0.003	0.001
No. of Lanes	Test Stat.	1.050	4.800	8.510	2.190
	-Value	0.305	0.029	0.004	0.028
Lighting	Test Stat.	5.350	17.440	6.730	2.720
	-Value	0.021	0.001	0.008	0.007
Weather	Test Stat.	0.320	0.160	0.070	0.400
	-Value	0.573	0.686	0.788	0.686