Case Study Tag: Roadway departure

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AASHTOWare: Prioritizing Roadway Departure Crashes

AASHTO
AASHTOWare compares and contrasts three methods for safety improvement location identification: 1) crash prediction model, 2) expected crash frequency exceeding threshold, and 3) crash prediction model + systemic safety characteristics.
AASHTO Safety Summit Poster 2025

FDOT’s Statewide Systemic Analysis

Florida
FDOT uses a data-driven, risk-based approach to guide systemic investments. Their systemic analysis led FDOT leadership to approve $35 million in HSIP funds, plus additional state funding for safety investments.
AASHTO Safety Summit Poster 2025

Oklahoma Safety Performance Measures

Oklahoma
Oklahoma DOT uses safety performance measures to identify and address safety issues like roadway departure, wrong-way driving, and work zone safety.
TPM Peer Exchange Video, Sep. 2024

A Machine Learning Approach to Systemic Safety Project Location Identification

Ohio
ODOT used machine learning to identify locations for systemic safety projects, focusing on pedestrian and roadway departure crashes.
Ohio DOT Story Map - Safety2023 Safety Summit Poster

FoRRRwD in Massachusetts

Massachusetts
MassDOT’s FoRRRwD initiative provided municipalities with low-cost safety countermeasures. As countermeasures were implemented, MassDOT noted reduced crashes and serious injuries from crashes.
2023 HSIP Report, pg. 7 & 252023 Safety Summit Poster

Enhancing Nighttime Visibility for Safety

FHWA
The nighttime fatality rate on the nation's roadways is three times higher than the daytime rate, and 76% of pedestrian fatalities occur at night. FHWA offers tools including safety countermeasures, updated and new approaches for lighting design and traffic control devices.
FHWA Nighttime Visibility WebpageFHWA Nighttime Fact Sheet2023 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

Mumble Strip and Stripe Research and Evaluation

Arkansas
ARDOT evaluated mumble strips as a variation of rumble strips that reduce noise pollution while maintaining driver safety. They found comparable safety effectiveness with less environmental impact.
ARDOT Newsletter Article, pg. 52023 Safety Summit Poster

MASH Test Level 3 Compliant Guardrail System on 1H to 1V Slope

Texas
Under some conditions, achieving the recommended 2-ft offset from guardrail posts to the slope break is challenging. Texas A&M Transportation Institute found a thrie-beam option would work in these conditions and pass MASH TL-3 tests.
Roadside Pooled Fund Test Report2024 Safety Summit Poster

Crash Testing of Electric Vehicles into W-Beam Guardrail and Roadside Barriers

Nebraska
Crash testing of electric vehicles (EVs) into W-beam guardrails revealed concerns about the compatibility of EVs with existing barriers due to increased weight from batteries. In the first test, a Tesla Model 3 penetrated under the guardrail, and in the second test, a Rivian R1T ruptured the guardrail and penetrated through the barrier.
University of Nebraska-Lincoln ArticleLocal News ArticleUniversity of Nebraska-Lincoln Video2024 Safety Summit Poster: W-Beam Guardrail2024 Safety Summit Poster: Roadside Barriers
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