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Evaluation of Safety Strategies at Signalized Intersections (2011) / Chapter Skim
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Chapter 6 - Compilation of CMFs
Pages 29-34

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From page 29...
... are provided along with the CMFs and the standard error of the CMFs. C H A P T E R 6 Compilation of CMFs
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From page 30...
... # Statistically significant at the 0.05 level (based on ideal standard errors) COMMENTS: • The analysis included different methods: cross-sectional models, before-after with comparison group, and before-after EB methods.
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From page 31...
... of CMF) STUDY SITES: • Among the 28 sites, 3 were from Colorado, 1 from Florida, 3 from Indiana, 2 from Maryland, 2 from Michigan, 2 from North Carolina, 11 from New York, 1 from South Carolina, 1 from Vermont, and 2 from Washington.
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From page 32...
... • In the before period, the average major road AADT was 17,417 (minimum major road AADT was 5,950 and maximum major road AADT was 31,600) and the average minor road AADT was 8,484 (minimum minor road AADT was 2,650 and the maximum minor road AADT was 20,225)
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From page 33...
... . • In North Carolina, in the before period, the average major road AADT was 12,302 (minimum was 4,857 and maximum was 18,766)
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From page 34...
... In Oregon, City of Beaverton provide data for 15 sites, City of Gresham provided data for 6 sites, City of Oregon City provided data for 3 sites, and City of Portland provided data for 10 sites with FYA. Data were obtained from 16 sites in urban areas from North Carolina.
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Key Terms

  • major road
  • minor road
  • average major
  • average minor
  • treated approach

  • increase yellow
  • change interval
  • total intersection
  • increase change
  • maximum major

  • maximum minor
  • minimum minor
  • minimum major
  • dynamic signal
  • signal warning

  • provided data
  • intersection crashes
  • warning flashers
  • intersection aadt
  • approaches treated

  • signal change
  • average total
  • fatal crashes
  • converted leg
  • sites cmf

  • lane roundabouts
  • maximum aadt
  • portland provided
  • beaverton provide
  • sample included


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