Case Study Tag: Intersections

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Systemic Safety Countermeasures and Collaborative Approaches at GDOT

Georgia
Georgia DOT uses crash data analysis to implement proactive, systemic safety countermeasures, improve safety for vulnerable users, optimize project delivery, and target unsafe driving behaviors.
TPM Peer Exchange Video, Sep. 2024

Implementing Complete Streets in Kentucky

Kentucky
When KYTC implemented Complete Streets, they found large reductions in fatalities and serious injuries at two-way stop and signalized intersections.
KYTC Press ReleaseKYTC Complete Streets Webpage2023 Safety Summit Poster

Development and Application of Safety Performance Functions in Project Delivery

Iowa
Based on models of Safety Performance Functions (SPFs), Iowa screened roadway facilities for Potential for Crash Reduction (PCR). PCR was then applied to project screening and prioritization, intersection projects, Super-2 corridor studies, a pilot safety corridor program, and environmental assessments.
Iowa State University ArticleIowa DOT PCR Portal2023 Safety Summit Poster

Local and Tribal Match Road Safety Program

FHWA
FHWA’s Match program connects local and tribal agencies with peer mentors to help resolve local and tribal road safety issues.
Program Overview2023 Safety Summit Poster

AWSC at Low-Volume Unsignalized Intersections

Delaware
With 40% of fatalities and serious injuries occurring at low-volume, unsignalized intersections, DelDOT implemented All-Way Stop Control. After three years, there were zero fatalities and 82% fewer injury crashes at the intersections evaluated.
AWSC Crash Trends MemoRoadway Safety Foundation Case StudyLocal News ArticleSafety Summit Poster 2023AASHTO Case Study

Improving Safety and Mobility at Traffic Signals

Utah
UDOT is addressing safety and mobility at traffic signals for all road users, including snow buildup in traffic signal LEDs, wrong-way driving countermeasures, and accessible pedestrian signals. Automated performance measures allow for full situational awareness, even for vulnerable road users.
Traffic Signals WebpageLocal News Video-LIDARATSPM Webpage2024 Safety Summit Poster

Safety in Project Development

Texas
TxDOT is incorporating safety into project development through various policies, programs, strategies, methods, and guidelines. For example, the TSAP manual and Safer By Design tools are newer resources to help TxDOT employees incorporate safety into all they do.
Safer By Design WebpageTexas Traffic Safety Analysis Procedures Manual (TSAP) Manual2024 Safety Summit Poster

The Safe System Approach in New Jersey

New Jersey
NJDOT has integrated the six principles and five elements of the Safe System Approach (SSA) into its programs, practices, and projects, aiming to achieve zero fatalities and serious injuries on all public roads.
Presentation Slides2024 Safety Summit Poster

Two-Way to All-Way Stop Control

New Hampshire
When all-way stop control (AWSC) was applied as a systemic safety improvement in rural areas of New Hampshire, total crashes reduced by 71%; 90% in injury crashes, and 75% in fatal crashes.
NHDOT Newsletter ArticlePress Release, ConcordPress Release, SalisburyPresentation, Chester2024 Safety Summit Poster

Safety Tools for Intersection Control Evaluation (ICE)

FHWA
ICE is a process that provides a framework, steps, and tools for agencies to make data-driven safety decisions about intersection forms and controls. NCHRP and FHWA offer several tools to support ICE.
NCHRP Report 1087: Guide for ICEFHWA ICE WebpageNCHRP Report 948: 20 Flags Calculator2024 Safety Summit Poster
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