NCHRP Project 03-130 Guide for Roundabouts: Project overview and update

Brian Ray

Manager
Sunrise Transportation Strategies, LLC.

Brian brings over 35 years practical experience in performance-based, multimodal planning and design. He's been engaged in all stages of project development on projects across the United States. He's been active at TRB in the area of geometric design and is an emeritus member of the performance effects of geometric design committee.

He's been a successful researcher including leading publications for performance-based design and the vision and roadmap for the impending AASHTO Green Book, 8th Edition. Brian is the principal investigator for NCHRP Research Project 03-130 Guide for Roundabouts and has extensive practical experience conducting intersection control evaluations at intersections and interchanges. Brian has been a supporter for integrating roundabouts in Caltrans since 1999.

NCHRP Project 03-130 will result in new national roundabout planning and design guidance. It will be a new, original document and replace the 2010 NCHRP Report 672 Roundabout: An Informational Guide, 2nd Edition.

The document will align with AASHTO multimodal flexible design principles and integrate concepts associated with the 2018 AASHTO Green Book. The content will be consistent with objectives for designing in context as will be included in the impending Green Book, 8th Edition.

The Guide is anticipated to be a primary reference document in the United States for roundabout planning, design, and operations.

Learning objective 1: Provide an overview of the contemporary approach to the new Guide.

Learning objective 2: Share the research and synthesis topics evaluated during the project and integrated in the Guide.

Learning Objective 3. Understand the Guide structure and chapters

The Guide is highly anticipated and will provide new guidance to support all aspects of roundabout planning, design, and operations.