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Alternative Intersection Design and Selection (2020)

Chapter: Appendix B - List of Responding Agencies

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Suggested Citation:"Appendix B - List of Responding Agencies." National Academies of Sciences, Engineering, and Medicine. 2020. Alternative Intersection Design and Selection. Washington, DC: The National Academies Press. doi: 10.17226/25812.
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Suggested Citation:"Appendix B - List of Responding Agencies." National Academies of Sciences, Engineering, and Medicine. 2020. Alternative Intersection Design and Selection. Washington, DC: The National Academies Press. doi: 10.17226/25812.
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99 A P P E N D I X B List of Responding Agencies Table B-1. List of Departments of Transportation (DOTs) responding to the survey Responding Agencies Alabama Department of Transportation Alaska Department of Transportation and Public Facilities Arizona Department of Transportation Arkansas State Highway and Transportation Department California Department of Transportation Colorado Department of Transportation Connecticut Department of Transportation Delaware Department of Transportation District Department of Transportation Florida Department of Transportation Georgia Department of Transportation Hawaii Department of Transportation Idaho Transportation Department Illinois Department of Transportation Indiana Department of Transportation Iowa Department of Transportation Kansas Department of Transportation Kentucky Transportation Cabinet Louisiana Department of Transportation and Development Maine Department of Transportation Maryland Department of Transportation State Highway Administration Massachusetts Department of Transportation Michigan Department of Transportation Minnesota Department of Transportation Mississippi Department of Transportation Missouri Department of Transportation

100 Alternative Intersection Design and Selection New Hampshire Department of Transportation Responding Agencies New Jersey Department of Transportation New Mexico Department of Transportation New York State Department of Transportation North Carolina Department of Transportation North Dakota Department of Transportation Ohio Department of Transportation Oklahoma Department of Transportation Oregon Department of Transportation Pennsylvania Department of Transportation Rhode Island Department of Transportation South Carolina Department of Transportation South Dakota Department of Transportation Tennessee Department of Transportation Texas Department of Transportation Utah Department of Transportation Vermont Agency of Transportation Virginia Department of Transportation Washington State Department of Transportation West Virginia Department of Transportation Wisconsin Department of Transportation Wyoming Department of Transportation Montana Department of Transportation Nebraska Department of Transportation Nevada Department of Transportation

Next: Appendix C - Individual Survey Responses »
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State departments of transportation often encounter public resistance to alternative intersections, with 86% of respondents in a new survey of state DOTs agreeing or strongly agreeing that public resistance hinders their implementation. Public resistance can vary among projects based on intersection type and whether the project was initiated at the local or state level.

The TRB National Cooperative Highway Research Program's NCHRP Synthesis 550: Alternative Intersection Design and Selection documents the evaluation and selection processes within state departments of transportation (DOTs) for intersection projects.

Roundabouts are the most widely implemented type of alternative intersection. Ninety percent of state DOTs that responded to the synthesis survey reported having at least one roundabout in their jurisdiction open and operational. Roundabouts also had the highest reported number of facilities in project development as 88% of respondents indicated there was at least one roundabout under development at their DOT.

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