Table 4.
Comparison of driving performance of the drivers during the two drives.
| No Distractions | Distractions | Differences | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Variable | µ | SD | C.I. (95%) | µ | SD | C.I. (95%) | µ | SD | C.I. (95%) | T-Student | p-Value |
| Lateral Distance | 2.54 | 2.10 | (1.86; 3.22) | 4.28 | 2.70 | (3.40; 5.16) | −1.74 | 0.55 | (−2.84; −0.65) | −3.18 | 0.00 |
| LD: crossing over a hard shoulder line | 1.13 | 1.15 | (0.76; 1.50) | 1.97 | 1.69 | (1.43; 2.52) | −0.85 | 0.33 | (−1.50; −0.19) | −2.58 | 0.01 |
| LD: crossing over a solid line | 0.69 | 0.69 | (0.47; 0.92) | 1.49 | 1.21 | (1.10; 1.88) | −0.80 | 0.22 | (−1.24; −0.35) | −3.56 | 0.00 |
| Speed limit 20 Km/h | 1.46 | 0.94 | (1.16; 1.77) | 2 | 0.97 | (1.68; 2.32) | −0.54 | 0.22 | (−0.97; −0.11) | −2.48 | 0.02 |
| Accident out of the road | 0.03 | 0.1 | (−0.03; 0.08) | 0.21 | 0.52 | (0.04; 0.37) | −0.18 | 0.09 | (−0.35; −0.01) | −2.05 | 0.04 |
µ: Mean, SD: Standard Deviation, and C.I: Confidence Interval.