The Relationship between Bus Drivers’ Improper Driving Behaviors and Abnormal Vehicle States Based on Advanced Driver Assistance Systems in Naturalistic Driving

Table 4

Association rules among various abnormal vehicle states.

Association rules	Support	Confidence	Effectivity
Lane departure–rapid acceleration	0.249	0.763	0.568
Lane departure–rapid deceleration	0.221	0.675	0.502
Rapid acceleration–lane departure–rapid deceleration	0.218	0.874	0.637
Rapid acceleration–rapid deceleration	0.381	0.792	0.621
Rapid deceleration–lane departure	0.221	0.507	0.391
Rapid deceleration–rapid acceleration–lane departure	0.218	0.987	0.715
Rapid deceleration–rapid acceleration	0.381	0.875	0.675
Rapid deceleration–rapid acceleration–lane departure	0.218	0.571	0.432
Forward collision–lane departure	0.109	1.000	0.711

Note: indicates strong rules; otherwise, they are general rules.