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Guidance for the Design and Application of Shoulder and Centerline Rumble Strips (2009) / Chapter Skim
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Pages 271-272

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From page 271...
... ( ) SPF Results for TOT, FI, and SSOD Crashes on Selected Roadways Without Centerline Rumble Strips An empty cell in a row where an SPF was estimated indicates the corresponding regression coefficient was not statistically significant at the 0.15 level or the coefficient's sign was not of the expected direction.
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From page 272...
... Table H-2. SPF results for FI crashes on two-lane rural roads based on all nontreatment sites.
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Key Terms

  • rumble strips
  • centerline rumble
  • rumble strip
  • ble strips
  • treatment sites

  • treatment site
  • line rumble
  • nontreatment sites
  • ble strip
  • speed limit

  • posted speed


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