Several types of speed limits exist, including statutory speed limit, posted speed limit, school zone speed limit, work zone speed limit, variable speed limit, and advisory speed.
The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 291: Development of a Posted Speed Limit Setting Procedure and Tool documents the research efforts and findings from an NCHRP Project 17-76 to identify factors that influence a driver’s operating speed and the development of a Speed Limit Setting Procedure and Tool.
The document is supplemental to NCHRP Research Report 966: Posted Speed Limit Setting Procedure and Tool: User Guide.
Table of Contents
|CHAPTER 1. BACKGROUND||16-17|
|CHAPTER 2. RESEARCH APPROACH||18-19|
|CHAPTER 3. FINDINGS||20-26|
|CHAPTER 4. CONCLUSIONS, OPTIONS, AND SUGGESTED RESEARCH||27-30|
|APPENDIX A. RELATIONSHIP AMONG ROADWAY CHARACTERISTICS, SPEED, AND SAFETY FOR URBAN/SUBURBAN STREETS||31-42|
|APPENDIX B. RELATIONSHIP AMONG ROADWAY CHARACTERISTICS, SPEED, AND SAFETY FOR HIGH-SPEED HIGHWAYS||43-52|
|APPENDIX C. SPEED LIMIT SETTING APPROACHES||53-79|
|APPENDIX D. RELATIONSHIP AMONG URBAN/SUBURBAN ROADWAY CHARACTERISTICS, OPERATING SPEED, AND CRASHES IN AUSTIN, TEXAS||80-106|
|APPENDIX E. RELATIONSHIP AMONG URBAN/SUBURBAN ROADWAY CHARACTERISTICS, POSTED SPEED LIMIT, AND CRASHES IN WASHTENAW COUNTY, MICHIGAN||107-118|
|APPENDIX F. DECISION RULE DEVELOPMENT||119-148|
|APPENDIX G. WORKSHOP SLIDES||149-170|
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