SUMMARY

Reducing Conflicts Between Turning Motor Vehicles and Bicycles: Decision Tool and Design Guidelines

This decision tool and design guidelines document is based on the findings from the original research that used a three-pronged analysis approach: crash analysis, video-based conflict analysis, and a human factors study in a simulator. The researchers and practitioners on the team reviewed the research findings in concert with previous research and best practices to generate the guidelines presented in this report. The final report for the project includes additional details on the state of the practice; research methods, findings, and limitations; an implementation plan; and areas for future research.

Reducing Conflicts Between Turning Motor Vehicles and Bicycles: Decision Tool and Design Guidelines
2024

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One of the most common locations for fatal motor vehicle–bicyclist crashes is at intersections, which inherently have many conflicts related to turning. Reducing these conflicts is a key objective in improving intersection safety across all modes. Of particular concern for bicyclists' safety at intersections are the conflicts between bicyclists travelling straight through the intersection and motor vehicle drivers making right turns and opposing left turns.

NCHRP Research Report 1125: Reducing Conflicts Between Turning Motor Vehicles and Bicycles: Decision Tool and Design Guidelines, from TRB's National Cooperative Highway Research Program, presents a decision tool and design guidelines to help highway safety practitioners reduce turning motor vehicle–bicycle conflicts at intersections.

Supplemental to the report are NCHRP WOD 408: Design Options to Reduce Conflicts Between Turning Motor Vehicles and Bicycles: Conduct of Research Report and an implementation memo.

Additional materials

Implementation Memo

Publication information

48 pages · 8.5 x 11 · paperback
ISBN Paperback: 0-309-73018-X
ISBN Ebook: 0-309-73019-8
DOI: https://doi.org/10.17226/28288

Suggested citation

National Academies of Sciences, Engineering, and Medicine. 2024. Reducing Conflicts Between Turning Motor Vehicles and Bicycles: Decision Tool and Design Guidelines. Washington, DC: The National Academies Press.

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Front Matter i-x
Summary 1-1
1 Introduction 2-7
2 Decision-Making Principles 8-11
3 Intersection Bikeway Design Decision Tool 12-22
4 Supplemental Design Guidelines 23-31
References 32-38

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Reducing Conflicts Between Turning Motor Vehicles and Bicycles: Decision Tool and Design Guidelines (2024)

Chapter: Summary

SUMMARY

Reducing Conflicts Between Turning Motor Vehicles and Bicycles: Decision Tool and Design Guidelines

Additional materials

Publication information

Suggested citation

My Academies

Reducing Conflicts Between Turning Motor Vehicles and Bicycles: Decision Tool and Design Guidelines (2024)

Chapter: Summary

SUMMARY Reducing Conflicts Between Turning Motor Vehicles and Bicycles: Decision Tool and Design Guidelines

SUMMARY

Reducing Conflicts Between Turning Motor Vehicles and Bicycles: Decision Tool and Design Guidelines