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Roundabout & Traffic-Calming Design Review
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Review of roundabout geometry and traffic-calming installations for safety, deflection, sight distance, and accessibility compliance.
NCHRP Report 672 RoundaboutsAASHTO Green Book (Policy on Geometric Design)FHWA Traffic Calming ePrimer
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Project Information
- Intersection / corridor location *
- Date of review *
- Installation type (single-lane roundabout, multilane, mini, speed table, chicane, etc.)
Roundabout Geometry
- Does the design provide adequate entry-path deflection to control speeds? *
- Are inscribed circle diameter and lane widths appropriate for the design vehicle? *
- Is the truck apron sized and detectable for the design vehicle?
- Fastest-path design speed (mph)
Sight Distance & Signing
- Is intersection sight distance and stopping sight distance provided at entries? *
- Is landscaping in the central island limited to preserve sight lines?
- Are yield control, chevron, and one-way signs/markings provided per MUTCD? *
Pedestrian & Bicycle Accommodation
- Are splitter islands provided with pedestrian refuge and detectable warnings? *
- Are crosswalks set back from the yield line an appropriate distance?
- Are bicycle ramps or bypass provisions included where warranted?
Traffic-Calming Elements
- Are vertical/horizontal calming measures appropriate for emergency-vehicle access?
- Is drainage maintained around raised calming devices?
- Review notes and recommendations
Roundabout & Traffic-Calming Design Review 체크리스트 전체 다운로드
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