Toll Facility Safety Study Report to Congress - About

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Toll Facility Safety Study Report to Congress Cause of the accident. Accident type (e.g., sideswipe, rear-end, etc.). Violation committed. Number of injuries. Number of fatalities. Police crash report number. General comments. About half of the crash records included time of day of the crash; an analysis of this by hour is shown in Table 3-7 below. Not surprisingly, the greatest number of crashes in the database occurred between 7:00 AM and 6:00 PM, which is likely the period of highest traffic volume at these facilities. Table 3-7. Number of Crashes by Hour Hour Number of Crashes % of Injuries 12:00 AM - 1:00 AM 81 1.7% 1:00 AM - 2:00 AM 45 1.0% 2:00 AM - 3:00 AM 47 1.0% 3:00 AM - 4:00 AM 45 1.0% 4:00 AM - 5:00 AM 53 1.1% 5:00 AM - 6:00 AM 60 1.3% 6:00 AM - 7:00 AM 152 3.3% 7:00 AM - 8:00 AM 267 5.8% 8:00 AM - 9:00 AM 325 7.0% 9:00 AM - 10:00 AM 268 5.8% 10:00 AM - 11:00 AM 218 4.7% 11:00 AM - 12:00 PM 283 6.1% 12:00 PM - 1:00 PM 235 5.1% 1:00 PM - 2:00 PM 272 5.9% 2:00 PM - 3:00 PM 299 6.4% 3:00 PM - 4:00 PM 307 6.6% 4:00 PM - 5:00 PM 340 7.3% 5:00 PM - 6:00 PM 350 7.5% 6:00 PM - 7:00 PM 288 6.2% 7:00 PM - 8:00 PM 178 3.8% 8:00 PM - 9:00 PM 134 2.9% 9:00 PM - 10:00 PM 144 3.1% 10:00 PM - 11:00 PM 129 2.8% 11:00 PM - 12:00 AM 116 2.5% Total 4,636 It was also possible to explore the frequency of crashes based on the number of vehicles involved. Table 3-8 shows that the majority of crashes in the database (75.4 percent) involved 2 vehicles. Only 21.4 percent involved a single vehicle and very few (3.1 percent) involved 3 or more vehicles. Findings – Characteristics of Accidents and Injuries Occurring at Toll Plazas Page 14
Toll Facility Safety Study Report to Congress Table 3-8. Number of Crashes by Vehicles Involved Number of Vehicles Involved Number of Crashes % of Injuries 1 866 21.4% 2 3,049 75.4% 3 105 2.6% 4 20 0.5% 5 1 0.0% 6 0 0.0% 7 0 0.0% 8 1 0.0% Total 4,042 Looking at the data for a single agency (Agency 2), it is possible to analyze the locations of crashes with respect to the toll plaza. Of 406 crash records that reported the crash location, approximately half occurred at the plaza itself (212 or 52.2 percent). Of the remaining crashes, 151 (or 37.2 percent) occurred upstream of the plaza, and 43 (or 10.6 percent) occurred downstream of the plaza. Looking at the data for another single agency (Agency 7) it is possible to gain insight into the types of crashes occurring at their facilities (representing two large plazas). These are summarized in Table 3-9. Nearly all of the crashes were sideswipes (75.6 percent) or rear end crashes (16.4 percent). Table 3-9. Number of Crashes by Type (Agency 7 only) Crash Type Number of Crashes % of Crashes Angle Collision 125 2.4% Backing 166 3.2% Damaged While Parked 1 0.0% Fixed Object 47 0.9% Head On (Two Vehicles) 5 0.1% Object Lying in Road 4 0.1% Other 28 0.5% Overtaking 2 0.0% Pedestrian 7 0.1% Ran Off Road 2 0.0% Rear End 839 16.4% Right-turn 2 0.0% Sideswipe 3,867 75.6% Turned Over in Road 3 0.1% Unknown 16 0.3% Total 5,114 3.2.2 Conclusions Based on analysis of 10,322 crash records obtained from 7 toll agencies, it can be seen that multi vehicle accidents are much more common than single vehicle accidents (75 percent of crashes involved 2 vehicles, while only 21 percent involved a single vehicle). In terms of where accidents most often occur in the vicinity of a toll plaza, only one agency provided this level of detail in their record-keeping, but the data from this agency showed that approximately half of all Findings – Characteristics of Accidents and Injuries Occurring at Toll Plazas Page 15
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Toll Facility Safety Study Report to Congress - About

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