Table 2.
Types of errors committed by PD drivers
| Marginal (n = 11) (%) | Safe (n = 14) (%) | NP | CS | UFOV | |
|---|---|---|---|---|---|
| Operational | |||||
| Awareness of how driving affects others | 73 | 0 | –0.44* | –0.18 | –0.44* |
| Prolonged hesitation before turning | 55 | 14 | –0.09 | –0.22 | –0.13 |
| Accelerates to appropriate speed | 45 | 7 | –0.43* | –0.42* | –0.47* |
| Strategic | |||||
| Reasoning about turning left onto a one-way street | 55 | 43 | –0.05 | 0.07 | –0.09 |
| Lapses of concentration | 45 | 7 | –0.16 | –0.37 | –0.28 |
| Tactical | |||||
| Checks traffic when pulling away from the curb | 91 | 71 | 0.44* | –0.34 | –0.28 |
| Scanned environment for merging | 73 | 57 | –0.03 | 0.04 | 0.004 |
| Smoothness of lane change | 55 | 14 | –0.27 | –0.19 | –0.09 |
| Turns into appropriate lane | 55 | 29 | –0.21 | 0.06 | –0.08 |
| Checks blind spot for lane change | 55 | 43 | –0.04 | –0.12 | –0.16 |
| Checks traffic before backing out | 45 | 14 | –0.05 | –0.22 | 0.02 |
| Signals for lane change | 45 | 29 | –0.36 | –0.12 | –0.42* |
| Signals to pull over to the curb | 36 | 14 | –0.49* | –0.22 | –0.31 |
| Comes to complete stop at four-way stop | 36 | 29 | –0.13 | –0.31 | –0.26 |
*
Significant point biserial correlation (p < .05).