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Guide for Roundabouts
(2023)
Roundabout implementation in the United States has increased in the last decade, and practitioners have learned lessons in successfully applying roundabouts in various land use and transportation environments and contexts.
The TRB National Cooperative Highway Research Program's NCHRP Research Report 1043: Guide for Roundabouts provides information and guidance on all aspects of roundabouts.
Supplemental to the report is NCHRP Web-Only Document 347: Background and Summary of a Guide for Roundabouts, which describes the research for and development of the guide.
This publication was updated on August 12, 2024. An errata sheet is available that provides the corrections made to the publication.
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