Case Study Filter: Rural Roads

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Prioritizing Safe System Elements Along a Rural Continuum

This pilot effort created a new way of looking at rural safety needs on a continuum. The project used six characteristics: block size, distance to fire stations, distance to public schools, distance to Level 1 & 2 trauma centers, intersection density, and undeveloped land.
2020 Census Block MapsHomeland Infrastructure Foundation-Level Data (HIFLD)National Transportation Atlas Database (NTAD)USDA National Land Cover Database2024 Safety Summit Poster

Pavement Marking Retroreflectivity

The Final Rule on maintaining pavement marking retroreflectivity goes into effect September 6, 2026. Agencies can use recommended methodologies to better prioritize budgets, maximize the life of pavement markings, and improve roadway safety.
Methods ReportMUTCD 11th EditionMethodology Videos2024 Safety Summit Poster

American Samoa Road Safety

The rugged terrain and high-sloped roadsides of Pacific islands is prone to rockfall, landslides, and tidal waves. American Samoa employs a variety of strategies and traffic devices to improve safety.
Highway Safety Plan 2024-262024 AASHTO Safety Summit Poster

Using Innovative Financing to Expedite Rural Safety Improvements

Oklahoma
Innovative financing expedited rural safety improvements, reducing project timelines and both crash costs and project costs.
Build America Package 1Build America Package 5Press ReleaseAASHTO Case Study

Shoulder and Centerline Rumble Strips on Rural Two-Lane Roadways in North Carolina

North Carolina
Rumble strips on rural two-lane roadways reduced lane departure crashes by 30%.
Local News ArticleLocal News ArticleAASHTO Case Study

Enhancing Curve Signing on Rural Two-Lane Roadways in North Carolina

North Carolina
Enhanced curve signing reduced lane departures by 33%, total crashes by 35% and fatal and injury crashes by 41%.
AASHTO Case Study

Roundabouts at High-Speed Intersections in North Carolina

North Carolina
Roundabouts at high-speed intersections reduced total crashes by 41% and fatal and injury crashes by 79%.
Evaluation of Roundabouts on High-Speed RoadwaysRoundabouts WebpageAASHTO Case Study

All Way Stops (AWS) in North Carolina

North Carolina
All Way Stops at rural intersections reduced fatal and severe injury crashes by 92%.
All Way Stop WebpageAll Way Stop Summary BriefAASHTO Case Study

Lane Constrictor Intersection Statewide Implementation

Minnesota
Lane constrictor intersections reduced fatal and injury crashes in Minnesota by 20%.
Traffic Safety Evaluation of Lane Constrictors ReportTRB Project PageAASHTO Case Study

Examining the Impact of Centerline Rumble Strips on Reducing Rural Two-Lane Head-On Collisions in Maine

Maine
Centerline rumble strips reduced head-on and opposite sideswipe collisions by 28-48%.
Research PaperRumble Strips BrochureAASHTO Case Study
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