Driver and vehicle-level characteristics
| n | % (95% CI) | |
|---|---|---|
| Vehicle body type | ||
| Automobile | 109/237 | 46.0 (41.0 to 51.1) |
| Light truck | 54/237 | 22.8 (18.8 to 27.4) |
| SUV | 39/237 | 16.5 (13.0 to 20.6) |
| Medium/heavy vehicle | 18/237 | 7.6 (5.3 to 10.8) |
| Van/minivan | 12/237 | 5.1 (3.2 to 7.8) |
| Bus | 3/237 | 1.3 (0.5 to 3.1) |
| Motorcycle | 2/237 | 0.8 (0.3 to 2.5) |
| Driver's age | ||
| Under 30 | 71/234 | 30.3 (25.8 to 35.3) |
| 30–49 | 77/234 | 32.9 (28.3 to 37.9) |
| 50–64 | 54/234 | 23.1 (19.0 to 27.7) |
| 65 and over | 32/234 | 13.7 (10.5 to 17.6) |
| Driver's sex | ||
| Female | 59/234 | 25.2 (21.0 to 30.0) |
| Male | 174/234 | 74.8 (70.0 to 79.0) |
| Police reported substance involvement | ||
| Alcohol | 20/252 | 7.9 (5.7 to 11.0) |
| Drugs | 7/252 | 2.8 (1.6 to 4.9) |
| Either alcohol or drugs | 23/252 | 9.1 (6.7 to 12.3) |
| Driving behaviours | ||
| Failure to yield right-of-way | 54/252 | 21.4 (17.7 to 25.7) |
| Speed-related | 17/252 | 6.7 (4.7 to 9.6) |
| Inattentive driving | 16/252 | 6.4 (4.4 to 9.2) |
| Hit and run | 41/252 | 16.3 (13.0 to 20.2) |
| Criminal violations | ||
| Homicide charge | 10/252 | 4.0 (2.5 to 6.4) |
| One or more moving violations | 42/252 | 16.7 (13.4 to 20.6) |
| Crash avoidance manoeuvers | ||
| None | 146/191 | 76.4 (71.0 to 81.2) |
| Braking | 31/191 | 16.2 (12.3 to 21.2) |
| Steering | 7/191 | 3.7 (2.0 to 6.7) |
| Braking and steering | 6/191 | 3.1 (1.6 to 6.1) |
| Other | 1/191 | 0.5 (0.1 to 2.7) |
SUV, sport utility vehicle.