Developing Roadway Safety Models for Winter Weather Conditions Using a Feature Selection Algorithm

Table 6

Crash frequency model.

Coefficients	Estimate	Std.	Error	value	Pr (>|t|)
(Intercept)	−17.58	4.36	−4.03	0.00
LnExposure	1.42	0.60	2.35	0.02
RoadCondition	0.59	0.68	0.87	0.39
WorstSnow	5.38	1.33	4.05	0.00
WorstVisibility	0.21	0.15	1.36	0.18
AVLRecords	0.04	0.01	4.85	0.00
Solid_PLM_Minute	21.87	9.07	2.41	0.02
Solid_PLM_MinuteBefore	−11.90	3.81	−3.12	0.00
AfterRecords	0.03	0.01	1.96	0.05	·
R-squared	0.4359
F-statistic	18.35 on 8 and 190 DF

Significance codes: 0 “”; 0.001 “”; 0.01 “”; 0.05 “·”.