| Variable | Description | Counts |
| Movement | turning movement | left = 461, right = 817, through = 0 |
| Following | subjective measure of following | close = 60, following = 47, not following = 1170 |
| TOD | time of day | dawn/dusk = 32, day = 1077, night = 168 |
| Weather | ambient conditions | clear = 1,158, raining = 119 |
| Overhead | overhead flashing beacon | yes = 74, no = 1203 |
| Lighting | intersection lighting | yes = 337, no = 940 |
| Skewed | skew and direction from perspective driver | left = 128, no = 625, right = 524 |
| RightLane | right turn lanes present on minor approach | yes = 1226, no = 51 |
| LeftLane | left turn lanes present on minor approach | yes = 1226, no = 51 |
| Sight | estimate of intersection sight distance | good = 118, limited = 237, somewhat_limited = 922 |
| AdvisorySpeed | advisory speed limit upstream | yes = 105, no = 1172 |
| AdvancedWarning | advance intersection warning sign | yes = 751, no = 526 |
| AdvancedType | type of advance warning sign | none = 526, w2-2* = 21, w3-1* = 371, w2-2* = 5, w3-1a = 301 |
| DoubleWarning | double advance warning signs | yes = 88, no = 1189 |
| Enhancements | intersection warning signs | yes = 27, no = 1250 |
| DoubleStop | double stop signs | yes = 177, no = 1100 |
| TransverseRumble | transverse rumble strips | yes = 35, no = 1242 |
| Beacon | flashing overhead or stop sign beacon | yes = 74, no = 1203 |
| Stop Bar | stop bar | yes = 147, no = 1130 |
| Channelization | channelization at the intersection | yes = 43, no = 1234 |
| Median | divided median on the major approach | yes = 22, no = 1255 |
| MedianType | type of median | no = 1255, painted = 8, raised = 14 |
| Grade | qualitative assessment of grade | downhill = 583, flat = 317, uphill = 377 |
| Splitter | presence of a splitter island | yes = 87, no = 1190 |
| Speeding | max driver speed > speed limit | yes = 1049, no = 228 |
| SpeedingAbove5 | max speed > 2.24 m/s (5 mph) over the speed limit | Yes = 826, No = 451 |
| SpeedingAbove10 | max speed > 4.47 m/s (10 mph) over the speed limit | Yes = 573, No = 704 |
| Gender | driver gender | Male = 752, Female = 525 |
| MajorApproachVeh | Presence of vehicle on perpendicular major approach within 3 seconds of the subject vehicle entering the intersection | Yes = 457, No = 820 |
| IsectAngle | angle of incoming approach to the outgoing approach treated as a categorical variable | 90 degree = 625 <90 degree = 103 >90 degree = 549 |
| AgeCategorical | Driver age | Age < 25 years = 139 25 ≤ Age < 60 = 779 Age ≥ 65 years = 359 |