Case Study Filter: Countermeasures

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.

High-Speed Lane Separation Project

Michigan
US-31/M-72 had frequent fog, blowing snow, and a severe crash pattern. After adding a center median, edgeline and centerline corrugations, guardrail, new pavement, and a flashing low visibility warning system, the segment had less severe crashes.

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.

Safer Mobility: Embracing Technology and Pilot Programs through the Safe System Approach

Florida Kentucky Massachusetts Missouri
Emerging innovations offer new opportunities to align with the safe system approach. Broward County, Florida identified 35 technologies for safer roads. Louisville, Kentucky developed strategies for safer speeds. MassDOT’s virtual reality pop-up experience strengthened outreach for safer people. Missouri’s predictive layered operations initiative (PLOI) enhanced post-crash care.

Wrong-Way Driving Flashing System

Montana
Montana DOT observed a significant increase in wrong-way driving and severe crashes. Working with law enforcement, maintenance, and traffic and safety, they installed a new wrong-way driving flashing system.

NCHRP Synthesis 639: Implementation of Federal Highway Administration Proven Safety Countermeasures

NCHRP
This report describes DOT practices and challenges in adopting of FHWA proven safety countermeasures. The research includes recommendations like more inclusion of maintenance personnel, outreach and training.

Combined CMF Calculator Tool

Texas
Texas DOT’s combined CMF calculator tool calculates the combined reduction factor of multiple countermeasures (which provides HSIP funding documentation). The full tool is accessible to district staff.

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.

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.

Safety Circuit Rider Program

Virginia
The Safety Circuit Rider program provides training and technical assistance to improve safety on local roadways.