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

Table 2

Descriptive statistics of the nonsevere wet-weather 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	408	64	81	1.529	1.784	0.001
AL 003	374	347	70	85	1.217	0.577	0.001
AL 004	192	101	75	88	1.000	0.008	0.001
AL 005	198	152	67	91	1.468	1.294	0.001
AL 006	240	161	50	69	1.830	3.924	0.001
AL 010	231	131	59	82	1.667	2.213	0.001
AL 012	232	170	55	79	1.624	2.036	0.001
AL 014	218	135	69	77	1.189	0.944	0.001
AL 015	227	98	69	84	1.215	0.971	0.001
AL 016	77	69	69	94	1.424	1.101	0.001
Combined	2342	1772	68	82	1.417	1.341	0.001