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TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 123: Evaluation of the Flashing Yellow Arrow Permissive-Only Left-Turn Indication Field Implementation explores the crash experiences associated with the use of the flashing yellow arrow (FYA) permissive only left-turn indication.

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2008. Evaluation of the Flashing Yellow Arrow Permissive-Only Left-Turn Indication Field Implementation. Washington, DC: The National Academies Press. https://doi.org/10.17226/23111.

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Publication Info

8.5 x 11 |  DOI: https://doi.org/10.17226/23111
Chapters skim
Front Matter i-ix
Chapter 1 Background 1-7
Chapter 2 Research Approach 8-17
Chapter 3 Literature Review 18-29
Chapter 4 Findings & Applications 30-51
Chapter 5 Installation Methods for FYA Signals 52-56
Chapter 6 Conclusions & Discussion 57-59
References 60-61
Appendix A FHWA Interim Approval Memorandum 62-66
Appendix B Conditions Report 67-69
Appendix C Intersection Inventory of Treatment Sites 70-106
Appendix D Traffic Volume Summary Tables 107-108
Appendix E Intersection Inventory of Comparison Sites 109-128
Appendix F Table Summary of Grouped Evaluation Data 129-132
Appendix G Table Summary of Sites Not Included in Group Evaulation 133-136

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