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TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 227: Design of Interchange Loop Ramps and Pavement/Shoulder Cross-Slope Breaks is presented in two parts. Part 1 presents design guidance for interchange loop ramps based on observational field studies and safety analyses and includes suggestions for the next edition of A Policy on Geometric Design of Highways and Streets published by the American Association of State Highway and Transportation Officials (AASHTO). Part 2 assesses AASHTO’s current design policy for pavement/shoulder cross-slope breaks on superelevated horizontal curves.

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2017. Design of Interchange Loop Ramps and Pavement/Shoulder Cross-Slope Breaks. Washington, DC: The National Academies Press. https://doi.org/10.17226/24683.

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Publication Info

8.5 x 11 |  DOI: https://doi.org/10.17226/24683
Chapters skim
Front Matter i-iv
Part 1: Design Guidance for Interchange Loop Ramps 1-139
Part 2: Assessment of Design Criteria for Pavement/Shoulder Cross-Slope Breaks 140-213

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