TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 488: Roundabout Practices summarizes roundabout policies, guidance, and practices within state departments of transportation (DOTs) as of 2015. The synthesis may be used as a reference for state agencies that are creating or updating their roundabout and intersection control policies.
Table of Contents
|Chapter One - Introduction||3-3|
|Chapter Two - Literature Review||4-15|
|Chapter Three - Survey Results||16-25|
|Chapter Four - Case Examples of Roundabout Practices||26-31|
|Chapter Five - Conclusions and Suggestions for Future Research||32-33|
|Appendix A - Summary of Statewide Roundabout Policies||38-42|
|Appendix B - State Agency Questionnaire||43-58|
|Appendix C - Questionnaire Responses||59-75|
|Appendix D - Case Examples||76-83|
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