Investigating Implementation Potentials of Turbo Roundabouts in Nevada (NDOT 147-21-803)
Multi-lane roundabouts have been used as a proven safety strategy for improving intersection safety by eliminating or altering conflict types and reducing crash severity. Despite these advantages, multi-lane roundabouts have several operational challenges such as driver confusion on proper lane choice decisions, striping and signing issues, and concerns with the frequency of crashes. A relatively new form of roundabout referred to as “turbo roundabout” has the potential to reduce the limitations encountered by multi-lane roundabouts, which can effectively guide drivers to reduce lane-change conflicts common in multi-lane roundabouts. A turbo roundabout has ten conflict points compared to sixteen conflict points in a traditional two-lane roundabout. In addition to safety benefits, a turbo roundabout could provide higher capacity due to reduced conflict points. This project’s overall goal is to develop guidelines for the Nevada Department of Transportation (NDOT) on the installation and performance of turbo roundabouts. As there are no known installations of turbo roundabout in the U.S., any kind of guidance that can assist with decision making is not available for transportation engineers, professionals, and consultants. Therefore, there is a need to synthesize and summarize current research, and more importantly, develop a mechanism that guides practitioners on how to decide on the installation of a turbo roundabout, such as installation criteria, design guidelines, safety and operational performance.
Language
- English
Project
- Status: Active
- Funding: $254102
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Contract Numbers:
P147-21-803
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Sponsor Organizations:
Nevada Department of Transportation
1263 South Stewart Street
Carson City, NV United States 89712Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Managing Organizations:
1263 South Stewart St
Carson City, Nevada United States 89712 -
Project Managers:
Bickett, Jeff
Koury, Lucy
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Performing Organizations:
West Virginia University Research Corporation, Morgantown
886 Chestnut Ridge Road
Morgantown, WV United States 26506 226 Stocker Center
Athens, Ohio United States 45701 -
Principal Investigators:
Naik, Bhaven
Dey, Kakan
- Start Date: 20210812
- Expected Completion Date: 20230731
- Actual Completion Date: 0
- USDOT Program: Transportation, Planning, Research, and Development
- Subprogram: Research
Subject/Index Terms
- TRT Terms: Guidelines; Roundabouts
- Geographic Terms: Nevada
- Subject Areas: Design; Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 01851103
- Record Type: Research project
- Source Agency: Nevada Department of Transportation
- Contract Numbers: P147-21-803
- Files: RIP, STATEDOT
- Created Date: Jul 6 2022 6:02PM