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Communicating Changes in Horizontal Alignment (2006) / Chapter Skim
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Report Organization
Pages 4-4

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From page 4...
... RESEARCH APPROACH The project included the following tasks: • A traditional literature review; • Focus group exercises involving practitioners from four states and two jurisdictional levels, state DOTs, and county road engineers; • A nationwide survey of practitioners; • Focus group exercises involving crash-involved and typical or "average" Michigan drivers; • A survey of crash-involved and typical or "average" drivers in Michigan and North Carolina; • A limited field study of behavior as Michigan drivers negotiated a pre-determined route and encountered various horizontal curves; • Development of recommendations for changes in the MUTCD; and • A final nationwide survey of practitioners to assess the perceived need for, and practical utility of, the recommendations. REPORT ORGANIZATION In the remainder of the report, summaries of findings from each of the tasks listed above are presented.
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Key Terms

  • traffic control
  • control devices
  • horizontal curve
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  • practical utility

  • traditional literature
  • develop comprehensive
  • ious horizontal
  • develop universal
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  • report organization
  • qualitative field
  • curve information
  • supplementary signs
  • advisory signs

  • limited field
  • highway situations
  • advisory speed
  • research relied
  • communicate horizontal

  • pavement markings
  • michigan drivers
  • regulatory signs
  • literature review
  • site conditions

  • individual supplementary
  • develop guidelines
  • curve situations
  • curve characteristics
  • appropriate message


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