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TRB’s National Cooperative Highway Research Program (NCHRP) Report 780: Design Guidance For Intersection Auxiliary Lanes expands on guidance provided in A Policy on Geometric Design of Highways and Streets (the Green Book), published by the American Association of State Highway and Transportation Officials (AASHTO). This report highlights information regarding bypass lanes, channelized right-turn lanes, deceleration and taper length, design and capacity of multiple left-turn lanes, and alternative intersection designs.

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2014. Design Guidance for Intersection Auxiliary Lanes. Washington, DC: The National Academies Press. https://doi.org/10.17226/22296.

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Publication Info

149 pages |  8.5 x 11 |  DOI: https://doi.org/10.17226/22296
Chapters skim
Front Matter i-viii
Summary 1-4
Chapter 1 - Background 5-6
Chapter 2 - Review of Literature and State Design Guidance 7-31
Chapter 3 - State of the Practice 32-43
Chapter 4 - Typical Designs 44-57
Chapter 5 - Double Left-Turn Lane Field Study 58-76
Chapter 6 - Deceleration Field Study 77-100
Chapter 7 - Conclusions, Recommendations, and Suggested Research 101-111
Appendix A - Recommended Revisions to AASHTO Green Book 112-144
References 145-150

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