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Table 8 A summary of variables used for regression analysis to crash severity

From: Exploration of the characteristics and trends of electric vehicle crashes: a case study in Norway

Variable Definition ICEV (%) EV (%)
Dependent
Severity 0 if light crash 84.7 86.7
1 if severe crash 15.3 13.3
Independent
Weekend 0 if it occurred on weekdaysa 76.1 82.4
1 if it occurred on weekends 23.9 17.6
Time of day AM peak (7–8 a.m.) 10.2 16.2
Daytime (9 a.m.–2 p.m.)a 32.4 29.1
PM peak (3–5 p.m.) 26.4 31.7
Nighttime (6 p.m.–6 a.m.) 31.1 23.0
Settlements Urban areaa 37.3 56.1
Rural area 62.7 43.9
Speed limit Low-speed (< 50 km/h) 13.7 21.6
Middle-speed (≥ 50 and < 80 km/h)a 52.9 59.4
High-speed (≥ 80 km/h) 33.4 19.1
Roadway location Segmenta 63.4 44.6
Junction 36.6 55.4
Presence of medians Noa 89.5 82.4
Yes 10.5 17.6
Visibility Good visibilitya 79.8 78.4
Good visibility—rainfall/snowfall 14.3 15.1
Poor visibility 5.9 6.5
Road surface conditions Drya 59.3 58.6
Wet 25.1 32.4
Snowy/icy 15.6 9.0
Accident category Cara 64.0 55.8
Motorcycle 16.2 11.5
Bike/pedestrian 19.8 32.7
  1. aIndicates the baseline of the variable