Research Article

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

Table 4

The effect of weather and road type on the severity of crashes.

Road typeWeatherProperty loss crashInjury crashFatal crash

Normal sectionSunny0.02810.41410.5578
Overcast0.02780.41370.5585
Rainy0.02770.41310.5592
Snowy0.02500.40980.5652
Foggy0.02500.41020.5647
Sunny0.10880.40970.4815
Overcast0.10990.41220.4779

Special sectionRainy0.10980.41230.4779
Snowy0.11470.42330.4620
Foggy0.12140.43970.4389
Sunny0.12380.35300.5232
Overcast0.12530.35340.5213

Complex nodeRainy0.12580.35360.5205
Snowy0.13090.35720.5118
Foggy0.14090.35640.5027