A Guide to Applying the Safe System Approach to Transportation Planning, Design, and Operations (2025) / Chapter Skim
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Appendix C: Safe System Design Practices
Appendix C: Safe System Design Practices
Pages 77-78
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From page 77... ...
. 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 78... ...
Moderate Impact Employing people with skills in perceptual Low Feasibility/ −0.396 −0.322 psychology to help design "self-explaining" roads. Low Impact Creating self-explaining road designs where all local roads have narrow lanes and traffic calming, all collector roads have bicycle lanes and safe Very Low Feasibility/ −1.142 0.196 pedestrian crossings, and all arterial roads severely Moderate Impact limit access and provide protected bicycle lanes and pedestrian crossings.
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