As Marijuana Use Grows, Effect on Road Safety Remains a Blind Spot

Media Coverage

January 1, 2025

Many states have done relatively little to study and mitigate the implications for road safety brought about by legalizing marijuana.

New York Times

Related Issues

Drug-Impaired Driving

Related Resources

Newsletters

November 25, 2025

Directions in Highway Safety: Fall 2025 Issue

Read about the growing momentum for roadway safety heading into 2026, a tribute to former GHSA Executive Director Barabara Harsha, how to improve drug-impaired driving data, and much more in the latest edition of GHSA's newsletter.

State Showcases

October 9, 2025

Impaired Driving Prevention Grant Result: Missouri

In 2024, GHSA and Responsibility.org provided a $28,750 grant to the Missouri State Highway Safety Office (SHSO) to strengthen enforcement capacity and address cannabis- and polysubstance-impaired driving.

State Showcases

October 9, 2025

Impaired Driving Prevention Grant Result: Kentucky

In 2024, GHSA and Responsibility.org provided a $28,750 grant to the Kentucky Office of Highway Safety to expand Kentucky’s capacity to detect and prosecute drug-impaired driving.