Transit Safety Risk Assessment Methodologies (2021) / Chapter Skim
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Pages 20-28
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20 Survey Results Forty-three agencies responded to either the targeted (21 agencies) or the non-targeted (22 agencies)
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Survey Results 21 Figure 11. Contract and total service.
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22 Transit Safety Risk Assessment Methodologies Figure 13. Number of modes contracted.
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Survey Results 23 Figure 15. Mode combinations.
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24 Transit Safety Risk Assessment Methodologies Figure 17 presents the number of agencies using each SRA method. The data suggest that the MIL-STD-882 is the most often used, with the modified MIL-STD-882 and "other" methods not far behind.
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Survey Results 25 Figure 18. How Safety Risk Assessment method is used.
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26 Transit Safety Risk Assessment Methodologies Agencies that use the MIL-STD-882 tout this method as being "uniform, well-defined and organized" in addition to being "widely accepted." Agencies that use the modified MIL-STD-882 state that this method "provides a more customized assessment of risk" (perhaps relative to its parent process) and, as such, "is more easily understood" (again, perhaps relative to its parent process)
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Survey Results 27 reported that they relied on internal program training. As seen in Figure 21, internal training was the most common resource reported, followed by consultants, then federal program training.
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28 Transit Safety Risk Assessment Methodologies Discussion The organizations that participated in the survey represent a broad spectrum of transit agencies with regard to geographic distribution, size, modes offered, and utilization of contract providers. While most agencies used a single SRA methodology, a small proportion (approximately 13 percent)
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