Developing a Clustering-Based Empirical Bayes Analysis Method for Hotspot Identification

Table 2

Summary statistics for road segments in Texas rural undivided highways dataset.

Variable	Time Period 1 (1997 and 1998)			Time Period 2 (1999–2001)
	Minimum	Maximum	Mean (SD)	Minimum	Maximum	Mean (SD)
Crash number	0	59	2.93 (4.81)	0	78	4.58 (7.81)
	40	24000	6391 (3835.01)	43.33	25333.3	6761.8 (4149.84)
LW (ft)	9.75	16.5	12.57 (1.59)	9.75	16.5	12.57 (1.59)
SW (ft)	0	40	9.96 (8.02)	0	40	9.96 (8.02)
CD	0	18.07	1.43 (2.35)	0	18.07	1.43 (2.35)
(miles)	0.1	6.28	0.55 (0.68)	0.1	6.28	0.55 (0.68)