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TRB's National Cooperative Highway Research Program (NCHRP) Report 559: Communicating Changes in Horizontal Alignment explores three recommended modifications to the Manual of Uniform Traffic Control Devices related to communicating changes in horizontal alignment for two-lane, two-way rural roads.

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2006. Communicating Changes in Horizontal Alignment. Washington, DC: The National Academies Press. https://doi.org/10.17226/13938.

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Publication Info

35 pages |  8.5 x 11 |  DOI: https://doi.org/10.17226/13938
Chapters skim
Front Matter i-vii
Summary 1-3
Chapter 1 - Introduction and Research Approach 4-4
Chapter 2 - Findings 5-18
Chapter 3 - Initial Guidelines and Recommendations for Changes to the MUTCD 19-22
Chapter 4 - Practitioner Opinion on Proposed MUTCD Changes 23-28
Chapter 5 - Revised Recommendations for the MUTCD and Related Changes 29-33
Bibliography 34-38
Abbreviations used without definitions in TRB publications 39-39

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