Research Article
Investigating Contributing Factors on Aggressive Driving Based on a Structural Equation Model
Table 4
Definitions of variables, their codes, and related statistics.
| | Item | Input code | Simple statistics | | Mean | S.D. |
| | Sex | Male: 1 | 0.26 | 0.44 | | Female: 0 | | | | Age | 19–30: 1 | 0.75 | 0.21 | | Other: 0 | | | | Distracted driving | Send message: 4 | | | | Talk on the phone: 3 | | | | Talking to people on the vehicle: 2 | | | | No distraction: 1 | — | — | | Drowsy driving | Yawning or blinking frequently: 4 | | | | Yawning or blinking: 3 | | | | Normal: 2 | | | | Excitement: 1 | — | — |
| | Weather | Adverse weather: 2 | 1.18 | 0.49 | | Other: 1 | | | | Horizontal curve | Continuous curve: 4 | | | | Sharp bend: 3 | | | | Small bend: 2 | | | | Straight: 1 | — | — | | Profile | Big-long downhill: 4 | | | | Steep downhill: 3 | | | | Small downhill: 2 | | | | Straight: 1 | — | — | | Traffic flow (TF) | Traffic stagnation: 4 | | | | Congestion: 3 | | | | Smooth flow: 2 | | | | Free flow: 1 | — | — |
| | Speed | Continuous variable | 55.39 | 32.76 | | Longitude acceleration (LO-ACC) | Continuous variable | −0.01 | 0.09 | | Lateral acceleration (LA-ACC) | Continuous variable | −0.01 | 0.08 |
| | Aggressive lateral acceleration (ALA-ACC) | Aggressive: 1 | 0.03 | 0.19 | | Other: 0 | | | | Aggressive longitudinal acceleration (ALO-ACC) | Aggressive: 1 | 0.28 | 0.46 | | Other: 0 | | |
| | Aggressive TTC (ATT) | Aggressive: 1 | 0.64 | 0.49 | | Other: 0 | | | | Speeding | Aggressive: 1 | 0.10 | 0.13 | | Other: 0 | | |
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