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SHRP 2 Safety Project S08 Initial Analyses from the SHRP 2 Naturalistic Driving Study Addressing Driver Performance and Behavior in Traffic Safety Shauna Hallmark Center for Transportation Research and Education at Iowa State University Dan McGehee Public Policy Center at the University of Iowa Karin M. Bauer and Jessica M. Hutton MRIGlobal Gary A. Davis, John Hourdos, and Indrajit Chatterjee University of Minnesota T. Victor, J. Bärgman, M. Dozza, H. Rootzén, J.D. Lee, C. Ahlström, O. Bagdadi, J. Engström, D. Zholud, and M. Ljung-Aust SAFER Vehicle and Traffic Safety Centre at Chalmers Volume Editor James Hedlund SHRP 2 Safety Coordinator TRANSPORTATION RESEARCH BOARD Washington, D.C. 2013 www.TRB.org
© 2013 National Academy of Sciences. All rights reserved. ACKNOWLEDGMENT This work was sponsored by the Federal Highway Administration in cooperation with the American Association of State Highway and Transportation Officials. It was conducted in the second Strategic Highway Research Program, which is administered by the Transportation Research Board of the National Academies. COPYRIGHT INFORMATION Authors herein are responsible for the authenticity of their materials and for obtaining written permissions from publishers or persons who own the copyright to any previously published or copyrighted material used herein. The second Strategic Highway Research Program grants permission to reproduce material in this publication for classroom and not-for-profit purposes. Permission is given with the understanding that none of the material will be used to imply TRB, AASHTO, or FHWA endorsement of a particular product, method, or practice. It is expected that those reproducing material in this document for educational and not-for-profit purposes will give appropriate acknowledgment of the source of any reprinted or reproduced material. For other uses of the material, request permission from SHRP 2. NOTICE The project that is the subject of this document was a part of the second Strategic Highway Research Program, conducted by the Transportation Research Board with the approval of the Governing Board of the National Research Council. The Transportation Research Board of the National Academies, the National Research Council, and the sponsors of the second Strategic Highway Research Program do not endorse products or manufacturers. Trade or manufacturersâ names appear herein solely because they are considered essential to the object of the report. DISCLAIMER The opinions and conclusions expressed or implied in this document are those of the researchers who performed the research. They are not necessarily those of the second Strategic Highway Research Program, the Transportation Research Board, the National Research Council, or the program sponsors. The information contained in this document was taken directly from the submission of the authors. This material has not been edited by the Transportation Research Board. SPECIAL NOTE: This document IS NOT an official publication of the second Strategic Highway Research Program, the Transportation Research Board, the National Research Council, or the National Academies.
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Contents 1 CHAPTER 1 Introduction 1 The First Four SHRP 2 NDS Analyses 3 CHAPTER 2 Assessing the Relationship between Driver, Roadway, Environmental, and Vehicle Factors and Lane Departures on Rural Two- Lane Curves: An Investigation Using the SHRP 2 Naturalistic Driving Study 3 Background 4 Project Objectives 4 Research Questions Addressed 4 Data Collection and Reduction 5 Crash Surrogates 5 Analysis Plan 7 Additional Considerations for Phase 2 7 Lessons Learned 7 Translating Research to Practice 9 CHAPTER 3 Evaluation of Offset Left-Turn Lanes: An Investigation Using the SHRP 2 Naturalistic Driving Study 9 Introduction 10 Working with the NDS Data 12 Preliminary Analysis 13 Plans for Phase 2 15 CHAPTER 4 Car Following, Driver Distraction, and Capacity-Reducing Crashes on Congested Freeways: An Investigation Using the SHRP 2 Naturalistic Driving Study 15 Introduction 15 Proposed Analysis 16 Phase 1 Objectives 16 Phase 1 Accomplishments 19 Conclusion 20 CHAPTER 5 Safer Glances, Driver Inattention, and Crash Risk: An Investigation Using the SHRP 2 Naturalistic Driving Study 20 Introduction 20 State of the Art on Dangerous Glance Behavior
21 Naturalistic Driving Data and Validated Inattention Crash Risk 21 Analysis Plan 23 Data 23 Results 25 Expected Results and Implications for Countermeasures 27 References