| Behavior |
Number of drivers |
Percent |
| Driving too fast for conditions or in excess of posted speed limit |
9,532 |
21.4% |
| Failure to keep in proper lane or running off road |
7,436 |
16.7 |
| Under the influence of alcohol, drugs or medication |
7,052 |
15.9 |
| Failure to yield right of way |
3,196 |
7.2 |
| Distracted (phone, talking, eating, etc.) |
2,912 |
6.6 |
| Operating vehicle in erratic, reckless, careless or negligent manner |
2,438 |
5.5 |
| Overcorrecting/oversteering |
2,034 |
4.6 |
| Failure to obey traffic signs, signals or officer |
1,912 |
4.3 |
Swerving or avoiding due to wind, slippery surface, other
vehicle, object, nonmotorist on roadway, etc. |
1,687 |
3.8 |
| Vision obscured (rain, snow, glare, lights, buildings, trees, etc.) |
1,426 |
3.2 |
| Driving wrong way in one-way traffic or on wrong side of road |
1,356 |
3.1 |
| Drowsy, asleep, fatigued, ill or blacked out |
1,218 |
2.7 |
| Making improper turn |
970 |
2.2 |
| Other factors |
5,971 |
13.4 |
| Unknown |
3,408 |
7.7 |
| None reported |
13,521 |
30.4 |
| Total drivers (1) |
44,440 |
100.0% |
(1) The sum of the figures in the number of drivers column is greater than "total drivers" as more than one factor may be
present for the same driver.
Source: U.S. Department of Transportation, National Highway Traffic Safety Administration. |