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. 2023 Oct 20;18(10):e0293307. doi: 10.1371/journal.pone.0293307

Table 2. Driving characteristic descriptive statistics.

Variables Min Max Mean SD
Crash ratio 0.0% 100.0% 11.8% 22.7%
Maneuver judgment
Safe and legal event ratio 0.0% 100.0% 88.8% 18.8%
Safe but illegal event ratio 0.0% 20.0% 1.0% 3.3%
Unsafe but legal event ratio 0.0% 50.0% 4.1% 9.0%
Unsafe and illegal event ratio 0.0% 100.0% 6.1% 16.2%
Event nature
Single-vehicle event ratio 0.0% 66.7% 10.1% 15.9%
Straight-line event ratio 0.0% 100.0% 62.6% 28.1%
Steering event ratio 0.0% 100.0% 27.3% 27.1%
Pre-incident maneuver
Steady driving event ratio 0.0% 100.0% 39.3% 28.6%
Direction change event ratio 0.0% 75.0% 17.3% 17.6%
Velocity change event ratio 0.0% 100.0% 43.4% 26.3%
Driver reaction
Braking event ratio 0.0% 100.0% 82.1% 22.4%
Steering reaction event ratio 0.0% 75.0% 7.6% 13.7%
Accelerated event ratio 0.0% 33.3% 1.0% 4.2%
No reaction event ratio 0.0% 100.0% 9.3% 19.9%
Distraction state
No-risk distraction event ratio 0.0% 100.0% 58.1% 29.0%
Low-risk distraction event ratio 0.0% 100.0% 31.9% 28.3%
Mid-risk distraction event ratio 0.0% 100.0% 8.0% 15.4%
High-risk distraction event ratio 0.0% 33.3% 2.0% 6.4%
Multiple distractions event ratio 0.0% 75.0% 14.8% 18.2%