Predicting Freeway Traffic Crash Severity Using XGBoost-Bayesian Network Model with Consideration of Features Interaction

Table 6

The effect of road alignment and time on the crash severity.

Road alignment	Time	Property loss crash	Injury crash	Fatal crash
Straight	0:00∼6:00	0.0088	0.3686	0.6226
	6:00∼12:00	0.0111	0.3892	0.5997
	12:00∼18:00	0.0108	0.3888	0.6004
	18:00∼24:00	0.0081	0.3675	0.6244
Nonstraight	0:00∼6:00	0.0033	0.3682	0.6285
	6:00∼12:00	0.0153	0.4380	0.5467
	12:00∼18:00	0.0173	0.4642	0.5185
	18:00∼24:00	0.0033	0.3682	0.6285