Research Article
Drivers’ Interaction with Adaptive Cruise Control on Dry and Snowy Roads with Various Tire-Road Grip Potentials
Table 2
Kinematic data of driving with ACC in both road conditions (
).
| Kinematic variable | Scenery and grip potential | Mean (M) | Standard deviation (SD) | 95% confidence interval | Lower limit | Upper limit |
| Speed set by the driver (m/s) | Summer () | 35.48 | 0.17 | 35.14 | 35.82 | Winter () | 32.55 | 0.30 | 31.97 | 33.14 | Distance gap at begin of the ACC reaction (m) | Summer () | 179.78 | 1.80 | 176.20 | 183.35 | Winter () | 169.40 | 1.87 | 165.68 | 173.12 | Mean deceleration of the ACC (m/s2) | Summer () | −0.84 | 0.01 | −0.85 | −0.82 | Winter () | −0.72 | 0.01 | −0.74 | −0.70 | Maximal jerk of the ACC deceleration (m/s3) | Summer () | 11.14 | 0.45 | 10.25 | 12.03 | Winter () | 8.53 | 0.40 | 7.74 | 9.31 | Mean acceleration of the ACC (m/s2) | Summer () | 0.51 | 0.004 | 0.50 | 0.51 | Winter () | 0.48 | 0.01 | 0.47 | 0.49 | Maximal jerk of the ACC acceleration (m/s3) | Summer () | 5.30 | 0.26 | 4.78 | 5.82 | Winter () | 3.86 | 0.17 | 3.52 | 4.21 | Distance gap after the ACC reaction (m) | Summer () | 34.38 | 0.16 | 34.07 | 34.69 | Winter () | 35.13 | 0.19 | 34.75 | 35.51 |
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Note: m: meter; s: second.
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