Description of Data Variables: Variable Description Year Month 01-January up until 12-December Day of week 01-Monday up until 07-Sunday Collision hour 00:01 to 23:59 Collision severity 1 - fatal or 2 - non-fatal Number of vehicles involved in collision Weather condition 1 - clear and sunny, 2 - cloudy, 3 - raining, 4 - snowing, 5 - freezing rain, 6 - limited visibility, 7 - strong wind Road surface 1 - dry, 2 - wet, 3 - snow, 4 - slush, 5 - icy, 6 - sand/gravel/dirt, 7 - muddy, 8 - oil, 9 - flood Road alignment 1 - straight and level, 2 - straight with gradient, 3 - curved and level, 4 - curved with gradient, 5 - top of hill, 6 - bottom of hill Vehicle ID Vehicle type See Below. Vehicle model year Person ID Person sex 01 - Female, 02 - Male Person age Person position See Below. Medical treatment 1 - no injury, 2 - injury, 3 - fatality required Safety device used 01 - none, 02 - safety device used, 09 - helmet worn, 10 - reflective clothing worn, 1 1 - helmet and reflective clothing, 12 - other safety device used, 13 - no safety device equipped Road user class 1 - Motor Vehicle Driver, 2 - Motor Vehicle Passenger, 3 - Pedestrian, 4 - Bicyclist, 5 - MotorcyclistVehicle Type. Code Description 01 Light Duty Vehicle (Passenger car, Passenger van, Light utility vehicles and light duty pickup trucks) 05 Panel/cargo van Panel or window type of van designed primarily 4536 KG All heavy unit trucks, with or without a trailer GVWR 08 Road tractor With or without a semi-trailer 09 School bus Standard large type 10 Smaller school bus Smaller type, seats