Case Study Tag: Systemic approach

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

Louisiana Vulnerable Road User (VRU) Safety Assessment

Louisiana

Using a systematic, data-driven approach, Louisiana’s VRU Safety Assessment identified target areas for improvements and recommended infrastructure countermeasures, education, programs and policies. Priority factors were mapped to focus on areas for project implementation.

AASHTO Safety Summit Poster 2025 LaDOTD VRU Safety Assessment

Don’t Wait, Be Proactive! Systemic Safety for Minnesota’s District Safety Plans

Minnesota

MnDOT updated road safety plans in every district with a systemic crash analysis. Analysis confirmed that higher crash densities and severe crashes occurred at locations with higher risk scores.

AASHTO Safety Summit 2025

Lane Constrictor Intersections in Minnesota

Minnesota

Concerned with rural intersections crashes, MnDOT developed a standard layout of lane constrictors. They installed lane constrictors at 61 side street, stop-controlled locations.

AASHTO Safety Summit Poster 2025 Evaluation Report

A Comprehensive Approach for Friction-Enhancing Treatment Selection

Kentucky

Kentucky replaced a needs-based, hot-spot approach with a more precise, systemic, “solutions-based” approach to friction-enhancing treatments and improved pavement safety performance.

AASHTO Safety Summit Poster 2025 Kentucky LTAP Video Study Document FHWA Case Study

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

Systemic Countermeasures Implementation and Tracking

Virginia

Virginia DOT created a statewide inventory and tracking system for the performance of countermeasures, leading to better communication among employees and partners, and the ability to track ongoing progress.

2023 Safety Summit Poster

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 - Safety 2023 Safety Summit Poster

Pedestrian Safety Improvements in Project Planning and Scoping

Nebraska

Nebraska DOT uses a variety of data analysis and screening methods during project planning and scoping to select countermeasures. Methods are also applied to systemic safety projects.