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

Table 3

Descriptive statistics of the nonsevere aggregate (dry and wet) crash rates and tests of normality for the ten selected routes.

Route ID	Length (mi)	N	Mean	St. Dv.	Normality Test
					Skewness	Kurtosis	Sig.
AL 001	353	774	164	224	2.051	4.290	0.001
AL 005	198	296	157	238	2.261	5.202	0.001
AL 006	240	317	154	226	2.233	5.161	0.001
AL 010	231	244	141	197	2.131	4.745	0.001
AL 012	232	325	145	206	2.347	6.419	0.001
AL 016	77	142	181	262	1.799	2.529	0.001
Combined	1331	2098	157	224	2.149	4.750	0.001