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A Guide to Applying the Safe System Approach to Transportation Planning, Design, and Operations (2025) / Chapter Skim
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Appendix B: Safe System Planning Practices
Pages 75-76

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From page 75...
... . Categories Z-scores High > 1 SD above mean Moderate < 1 and > 0 Low > −1 and < 0 Very Low < −1 SD below mean Note: SD = standard deviation round the mean score of zero (0)
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From page 76...
... Incorporating nontraditional transportation safety data sources [e.g., emergency medical services, hospital, social determinants of health, Low Feasibility/ −0.307 −0.012 environmental, and historical (e.g., redlining)
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Key Terms

  • low impact
  • nontraditional transportation
  • travel forecasting
  • incorporating road
  • safety issues

  • routine basis
  • transportation safety
  • events falling
  • road safety
  • category incorporating

  • road deaths
  • deviation round
  • impact category
  • below mean
  • interpretive categorization

  • falling outside
  • reduce road
  • incorporating nontraditional
  • safety audits
  • impact columns

  • mean score
  • replacing travel
  • feasibility impact
  • standard deviation
  • safety data

  • safety moderate
  • safety plans
  • safety effects
  • project prioritization
  • impact travel


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