Table 1.

Input and output variables.

Variable	Range
Input Variables
Month	1–12
Day	1–31
Day of the Week	Monday–Sunday
Hour of Crash	0–23
AM/PM	am, pm
Crash Type	Vehicle–Vehicle, Vehicle–Truck, Vehicle–Pedestrian, Vehicle–Motorcycle, Vehicle–Barrier, Truck–Truck, Truck–Motorcycle, Truck–Barrier, Motorcycle–Motorcycle, Motorcycle–Barrier, Other
Injury Severity Level	No Apparent-Injury, Minor Injury, Serious Injury
Road Type	Motorway, Trunk, Primary, Secondary, Tertiary, Unclassified
Spatial Cluster ID	1–10
Output Variable
Fatality occurrence	Fatal, Not Fatal