Guidelines for Timing Yellow and All-Red Intervals at Signalized Intersections

National Academies of Sciences, Engineering, and Medicine

doi:10.17226/22700

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Guidelines for Timing Yellow and All-Red Intervals at Signalized Intersections

(2012)

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TRB’s National Cooperative Highway Research Program (NCHRP) Report 731: Guidelines for Timing Yellow and All-Red Intervals at Signalized Intersections offers guidance for yellow change and all-red clearance intervals at signalized intersections. The guidelines provide a framework that can be easily applied by state and local transportation agencies.

Contributor(s): National Academies of Sciences, Engineering, and Medicine; Transportation Research Board; National Cooperative Highway Research Program; Hugh McGee, Sr.; Kevin Moriarty; Kim Eccles; Mindy Liu; Timothy Gates; Richard Retting

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2012. Guidelines for Timing Yellow and All-Red Intervals at Signalized Intersections. Washington, DC: The National Academies Press. https://doi.org/10.17226/22700.

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Publication Info

83 pages | 8.5 x 11 | DOI: https://doi.org/10.17226/22700

Chapters		skim
Front Matter	i-vii
Summary	1-3
Chapter 1 - Introduction	4-5
Chapter 2 - Background	6-10
Chapter 3 - State of Knowledge for Change Interval Timings	11-16
Chapter 4 - State of Practice for Change Interval Timings	17-21
Chapter 5 - Field Study Data Collection and Analysis	22-43
Chapter 6 - Discussion of Study Results	44-51
Chapter 7 - Conclusions and Recommended Research	52-53
References	54-55
Appendix A - Guidelines for Timing Yellow and All-Red Intervals at Signalized Intersections	56-59
Appendix B - Relevant MUTCD Sections	60-63
Appendix C - Definition of Yellow Signal for Vehicles by State	64-67
Appendix D - Traffic Signal Change Intervals Survey	68-70
Appendix E - Detailed Site Characteristics	71-76
Appendix F - Effect of 1-Second Red Clearance Interval Reduction on Intersection Clearance	77-84

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