Case Study Tag: Design

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Idaho’s US-20 Expansion from SH-55 to Locust Grove

Idaho
US-20 expansion and reflective backplating on signals reduced serious injury and fatal crashes by 75%.
Project Overview FlyerAASHTO Case Study

Reconstruction, Widening, and Signalization at the Intersection of West Karcher Road (SH-55) and Lake Avenue

Idaho
Reconstruction and signalization at SH-55 and Lake Avenue reduced serious injury and fatal crashes by 100%
AASHTO Case Study

16th Street NW Bus Priority Project Analysis

District Columbia
16th Street NW Bus Priority Project improved bus travel times by 8-15% and reduced crashes by 28%.
Project Website, Report, and Story MapAASHTO Case Study

Exploring the Safety Benefits of All-Way Stop Control at Low-Volume Unsignalized Intersections

Delaware
All-Way Stop Control (AWSC) at low-volume intersections reduced fatal crashes by 75% and injury crashes by 90%.
Roadway Safety Foundation Case StudyNews ReleaseAASHTO Case Study

SAFER Tool for All Projects

Missouri
The Missouri Department of Transportation (MoDOT) developed a series of safety questions to be applied to every transportation project at the agency.
MODOT SAFER WebsiteToward Zero Deaths Case StudyAASHTO Case Study2023 Safety Summit Poster
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