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TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 178: Assessment of Auxiliary Through Lanes at Signalized Intersections describes a project that investigated the operational, safety, and design characteristics of auxiliary through lanes (ATLs) at signalized intersections.

The project resulted in the development of guidelines for the evaluation and application of ATLs that were published as NCHRP Report 707: Guidelines on the Use of Auxiliary Through Lanes at Signalized Intersections.

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2011. Assessment of Auxiliary Through Lanes at Signalized Intersections. Washington, DC: The National Academies Press. https://doi.org/10.17226/22830.

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Publication Info

8.5 x 11 |  DOI: https://doi.org/10.17226/22830
Chapters skim
Front Matter i-iii
CONTENTS 1-2
Abstract 3-4
CHAPTER 1: BACKGROUND 5-6
CHAPTER 2: RESEARCH APPROACH 7-13
CHAPTER 3: LITERATURE REVIEW 14-26
CHAPTER 4: WEB-BASED SURVEY 27-35
CHAPTER 5: FIELD DATA COLLECTION 36-49
CHAPTER 6: OPERATIONAL ANALYSIS AND MODELING 50-62
CHAPTER 7. SAFETY ANALYSIS AND MODELING 63-79
CHAPTER 8: GUIDELINES 80-82
CHAPTER 9: CONCLUSIONS AND RECOMMENDATIONS 83-87
CHAPTER 11: REFERENCES 88-89
APPENDIX A: WEB-BASED SURVEY RESULTS 90-94
APPENDIX B: FIELD DATA COLLECTION RESULTS 95-99
APPENDIX C: ATL LENGTH ESTIMATION PROCEDURE 100-104
APPENDIX D: HCM IMPLEMENTATION CASE STUDY 105-109
APPENDIX E: ATL SIMULATION PROCEDURES 110-114

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