Current Practices in the Use of Onboard Technologies to Avoid Transit Bus Incidents and Accidents (2020) / Chapter Skim
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Pages 8-14
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From page 8... ...
8 Bus collision and fatality rates have followed a generally increasing trend, while bus injury rates have slightly decreased over the past decade, as shown in Figure 1 through Figure 3. Casualty and liability costs have also trended upward over the past decade, as shown in Figure 4.
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From page 9... ...
Literature Review 9 Source: NTD S&S-40 data (NTD 2018)
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10 Current Practices in the Use of Onboard Technologies to Avoid Transit Bus Incidents and Accidents Shield+ developed by Rosco (Lutin et al.
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Literature Review 11 transit agencies with moving image–based evidence for any type of event deemed unusual. The study finds that participating drivers at the two firms "reduced the mean frequency of recorded safetyrelated events per 10,000 vehicle miles traveled by 37 percent and 52.2 percent" (Litschi and Haas 2012)
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From page 12... ...
12 Current Practices in the Use of Onboard Technologies to Avoid Transit Bus Incidents and Accidents and vehicles, should not be dependent upon being on specific routes, and should be suppressed after the bus enters the crosswalk. The authors are also critical of using GPS for PCW and vehicle rightturn warnings, citing limitations of GPS technology, especially in downtown urban settings.
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From page 13... ...
Literature Review 13 and false positives, measurement of the performance of collision avoidance systems, analysis of comparisons with historical claims, and a costeffectiveness analysis of a full implementation. Over the course of the pilot, "Buses equipped with Shield+ systems logged 352,129 miles and 23,798 operating hours during the official pilot data collection period" and "No Shield+ equipped buses were involved in any collisions with bicyclists or pedestrians" (Lutin et al.
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From page 14... ...
14 Current Practices in the Use of Onboard Technologies to Avoid Transit Bus Incidents and Accidents tool to identify risky driving behaviors of the bus operators and "to improve operational safety and reduce traffic accidents by increasing operators' awareness of their unsafe driving habits and coaching them to modify these unsafe driving behaviors." As a result, each transit authority saw a decrease in the number of collisions per million revenue miles, passenger injuries per million revenue miles, preventable accidents, traffic violations, risky behaviors, and collisions. Specific details from each agency can be gleaned from the full report by Haas and Litschi.
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