Environmental Characteristics
Period of Day From Figure 23 , crashes are more likely to happen during daylight time and nighttime as more travelling happen during these periods. However, nighttime crashes are overrepresented in KSI crashes, indicating they are more likely to result in severe outcomes and highlighting the impact of lighting on safety.
Percentage of Crashes by Period of Day
80%
68.1%
70%
64.4%
60%
50.4%
48.6%
47.3%
45.6%
50%
40%
31.7%
27.6%
30%
20%
10%
2.4%
2.3%
2.2%
2.2%
1.9%
1.8%
1.8%
1.6%
0%
dawn
daylight
dusk
night
% of All Crashes
% of KSI Crashes
VRU Crashes
VRU KSI Crashes
Figure 23: Percentage of Crashes by Period of Day, 2019-2023
Table 28: All and VRU Crashes by Period of Day, 2019-2023
All Crash
VRU Crash
Lighting
# of Crashes
% of Crashes
# of KSI Crashes
% of KSI Crashes
# of Crashes
% of Crashes
# of KSI Crashes
% of KSI Crashes
Dawn
1,130
1.6%
47
1.8%
26
1.8%
10
1.9%
Daylight
44,386
64.4%
1,180
45.6%
712
48.6%
142
27.6%
37
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