Exploring Relationships between Months and Different Crash Types on Mountainous Freeways Using a Combined Modeling Approach

Table 2

The confidence distribution of Apriori rules.

Total			Rear-end			Fixed-object hitting			Overturning
Month	Rank	Conf	Month	Rank	Conf	Month	Rank	Conf	Month	Rank	Conf
Jan.	No. 1	0.625	Jan.	No. 2	0.625	Apr.	No. 2	0.625	Jan.	No. 3	0.750
Dec.	No. 3	0.625	Feb.	No. 3	0.625	Jun.	No. 1	0.625	Mar.	No. 3	0.750
Feb.	No. 3	0.500	Mar.	No. 3	0.625	Mar.	No. 3	0.500	Apr.	No. 3	0.625
Mar.	No. 3	0.500	Apr.	No. 2	0.625	Aug.	No. 2	0.500	Jun.	No. 2	0.625
Apr.	No. 2	0.500	Jun.	No. 3	0.625	Sep.	No. 3	0.500	Oct.	No. 1	0.625
Jun.	No. 1	0.500	Jul.	No. 3	0.625	Oct.	No. 3	0.500	May.	No. 2	0.500
Jun.	No. 2	0.500	Dec.	No. 3	0.625	Nov.	No. 3	0.500	Jul.	No. 2	0.500
Aug.	No. 1	0.500	Aug.	No. 1	0.500	Dec.	No. 3	0.500	Aug.	No. 3	0.500
Aug.	No. 2	0.500	Sep.	No. 2	0.500	Jan.	No. 1	0.375	Sep.	No. 3	0.500
Sep.	No. 2	0.500	Oct.	No. 1	0.500	Jan.	No. 2	0.375	Nov.	No. 2	0.500
Oct.	No. 1	0.500	Nov.	No. 2	0.500	Feb.	No. 1	0.375	Dec.	No. 3	0.500
Nov.	No. 3	0.500	May.	No. 1	0.375	Feb.	No. 2	0.375	Feb.	No. 2	0.375
Feb.	No. 1	0.375	May.	No. 2	0.375	Mar.	No. 2	0.375	Feb.	No. 3	0.375
Mar.	No. 2	0.375	Sep.	No. 3	0.375	Apr.	No. 3	0.375	Apr.	No. 2	0.375
Apr.	No. 3	0.375	Oct.	No. 2	0.375	May.	No. 1	0.375	May.	No. 3	0.375
May.	No. 1	0.375	Nov.	No. 3	0.375	May.	No. 1	0.375	Jul.	No. 3	0.375
May.	No. 2	0.375				Jun.	No. 2	0.375	Aug.	No. 1	0.375
Jul.	No. 1	0.375				Jul.	No. 1	0.375	Sep.	No. 2	0.375
Jul.	No. 2	0.375				Jul.	No. 2	0.375	Oct.	No. 2	0.375
Sep.	No. 3	0.375				Aug.	No. 1	0.375
Oct.	No. 3	0.375				Sep.	No. 1	0.375
						Oct.	No. 2	0.375
						Nov.	No. 2	0.375
						Dec.	No. 2	0.375

Conf: indicates the confidence level.