Driving Performance Variables and Total Incidence for Both Conditions
| Performance Variables | Controlled-Release MPH | No Medication |
|---|---|---|
| Control variables | ||
| Driving significantly faster than traffic | 36 | 37 |
| Driving significantly slower than traffic | 2 | 4 |
| Impulsivity | ||
| Cut someone off | 2 | 2 |
| Pulled out in front of person | 0 | 1 |
| Following traffic too close, ‘tail gating’ | 4 | 4 |
| Got angry at traffic | 1 | 2 |
| Inattentiveness | ||
| Distracted by inside: CD/radio, examiner, etc. | 7 | 12 |
| Distracted by outside: traffic, pedestrians, etc. | 6 | 5 |
| Missed turn | 4 | 8 |
| Failed to see signal and ran a red light or stop sign | 2 | 5 |
| Inappropriate hesitation, balking | 7 | 12 |
| Inappropriate or unwarranted braking | 2 | 11 |
| Failed to yield to signals or right of way | 1 | 4 |
| Failed to signal when turning | 18 | 29 |
| Drove across midline | 2 | 5 |
| Drove off road or over curb | 3 | 2 |