| Variable | Mean | Std. Deviation | Description |
| ACCLOC | 0.39607 | 0.48908 | =1 If the location of the crashes is off roadway, =0 otherwise |
| ALCOHOL | 0.12585 | 0.33168 | =1 if the driver is under influence, =0 otherwise |
| AUTO | 0.48258 | 0.49970 | =1 If the involved vehicle is auto, =0 otherwise |
| DAYLIGHT | 0.52255 | 0.49949 | =1 If crashes occur during daylight, =0 otherwise |
| DITCH | 0.17168 | 0.37710 | =1 If the crashes occur due to collision with ditch, culvert and embankment, =0 otherwise |
| DR_EVASIVE_ACT | 0.06754 | 0.25095 | =1 If the driver has avoidance or evasive action, =0 otherwise |
| DR_FAULT | 0.69467 | 0.46055 | =1 If the driver is at fault, =0 otherwise |
| DR_FL_ASLEEP | 0.04268 | 0.20215 | =1 If the driver is falling asleep, =0 otherwise |
| DR_INATTN | 0.25113 | 0.43367 | =1 If the driver fails to give time and attention, =0 otherwise |
| DR_MEDCOND | 0.01934 | 0.13772 | =1 If the driver is ill/medical condition when crashes occur, else 0 |
| DR_TOO_FAST | 0.27341 | 0.44571 | =1 If the driver is too fast for conditions or exceeded posted speed limit, =0 otherwise |
| EJECT | 0.05266 | 0.22335 | =1 If the driver is ejected/trapped, =0 otherwise |
| GRDRAIL | 0.05669 | 0.23125 | =1 If the crashes occur due to collision with guard rail, else 0 |
| LICCOMP | 0.84028 | 0.36635 | =1 if the driver has valid license, =0 otherwise |
| LICST | 0.78547 | 0.41050 | =1 If the driver has the license in Kansas, =0 otherwise |
| MALE | 0.62094 | 0.48516 | =1 if the driver is a male, =0 otherwise |
| MDNBAR | 0.07467 | 0.26287 | =1 If the crashes occur due to collision with divider-median barrier, =0 otherwise |
| MOTORCYCLS | 0.03010 | 0.17088 | =1 If the involved vehicle is motorcycle, =0 otherwise |
| OLDDR | 0.04310 | 0.20308 | =1 if the driver is 65 years or older, =0 otherwise |
| OVERTURNED | 0.18588 | 0.38901 | =1 If crashes occur due to overturning, =0 otherwise |
| RDASPHLT | 0.58463 | 0.49279 | =1 If the road surface is asphalt, =0 otherwise |
| RDCONCR | 0.22651 | 0.41858 | =1 If the road surface is concrete, =0 otherwise |
| RDCOND | 0.63689 | 0.48090 | =1 If the road surface condition is dry, =0 otherwise |
| RD_CHAR | 0.56531 | 0.49572 | =1 If crashes occur in straight and level road surface, =0 otherwise |
| RDCONSMNT | 0.01934 | 0.13772 | =1 If the crashes occur in construction/maint/utility zone, else 0 |
| RSTCOMP | 0.33426 | 0.47173 | =1 if the driver is complied with any restriction, =0 otherwise |
| SFEQUIP | 0.73553 | 0.44106 | =1 if the driver uses safety equipment, =0 otherwise |
| SPEED | 50.0083 | 15.06981 | Posted speed limit in mph |
| SUVS | 0.14778 | 0.35489 | =1 If the involved vehicle is SUV, =0 otherwise |
| TIME | 0.24869 | 0.43226 | =1 If crashes occur between 6 pm and midnight, =0 otherwise |
| TREE | 0.06729 | 0.25052 | =1 If the crashes occur due to collision with a tree, =0 otherwise |
| UTLPOLE | 0.12646 | 0.33237 | =1 If the crashes occur due to collision with utility and other post poles, =0 otherwise |
| VANS | 0.04663 | 0.21085 | =1 If the involved vehicle is Vans, =0 otherwise |
| VEH_ DESTRYD | 0.19651 | 0.39736 | =1 If the vehicle is destroyed due to crash, =0 otherwise |
| VEH_DISABLED | 0.47384 | 0.49932 | =1 If the vehicle is disabled due to crash, =0 otherwise |
| VEH_PASSING | 0.02352 | 0.15156 | =1 If the vehicle is passing/overtaking/changing lane when crashes occur, =0 otherwise |
| VEH_STRAIGHT | 0.72142 | 0.44830 | =1 If the vehicle follows straight road before crashes occur, else 0 |
| VEHTURN | 0.09153 | 0.28837 | =1 If the vehicle is making any turn when crashes occur, else 0 |
| VHRGST | 0.83129 | 0.37450 | =1 If the vehicle has the registration in Kansas, =0 otherwise |
| VHAGE | 0.63517 | 0.48139 | =1 If the vehicle is more than or equal to 10 years old, else 0 |
| WEATHER | 0.71703 | 0.45044 | =1 If crashes occur in good weather, =0 otherwise |
| WEEKEND | 0.33527 | 0.47209 | =1 If the crashes occur during weekend, =0 otherwise |
| YOUNGDR | 0.37980 | 0.48534 | =1 if the driver is between 16 and 24 years, =0 otherwise |