Bayesian Hierarchical Modeling Monthly Crash Counts on Freeway Segments with Temporal Correlation

Table 3

Pearson correlation coefficients between explanatory variables.

	Length	MTT					Curvature	Gradient	Bridge	Access
Length	1	0.13	−0.09	−0.04	−0.08	0.02	0.10	−0.25	0.23	0.18
MTT	0.13	1	0.18	−0.10	−0.00	−0.15	−0.02	−0.13	0.06	0.17
	−0.09	0.18	1	−0.44	−0.12	−0.63	0.00	0.03	−0.04	−0.00
	−0.04	−0.10	−0.44	1	−0.26	−0.16	0.02	0.02	−0.01	0.00
	−0.08	−0.00	−0.12	−0.26	1	0.69	0.03	0.04	0.00	0.01
	0.02	−0.15	−0.63	−0.16	0.69	1	0.01	0.00	0.02	−0.01
Curvature	0.10	−0.02	0.00	0.02	0.03	0.01	1	−0.06	0.08	−0.06
Gradient	−0.25	−0.13	0.03	0.02	0.04	0.00	−0.06	1	−0.00	−0.04
Bridge	0.23	0.06	−0.04	−0.01	0.00	0.02	0.08	−0.00	1	0.00
Access	0.18	0.17	−0.00	0.00	0.01	−0.01	−0.06	−0.04	0.00	1