The objectives of this research are to 1) understand the current state of practice and legal nuances that differ among jurisdictions and 2) develop a toolkit of practical strategies for SHSOs and other stakeholders to effectively communicate the goals of implementation and requirements for drivers to realize safety improvements.
Status: Research Underway
Slow Down Move Over (SDMO) laws are designed to protect first responders and stranded motorists, yet many drivers do not understand what these laws require. All states have enacted SDMO laws, but an estimated one‑third of Americans are not aware of them. Confusion about when and how to comply, combined with inconsistent public education, limits the safety benefits these laws are meant to provide.
This project will examine the current state of SDMO laws, identify differences across jurisdictions and develop best practices that help states improve public understanding and compliance. Because SDMO laws vary in language and application, many drivers are unsure what conditions require them to slow down or move over. This knowledge gap affects enforcement, education and overall effectiveness.
The project will assess how states currently communicate SDMO requirements, how enforcement is carried out and where gaps in public awareness persist. It will also review legal nuances that differ among jurisdictions and evaluate how these differences affect driver behavior.
The project will produce a toolkit of practical strategies for state highway safety offices and other stakeholders. This toolkit will help agencies communicate SDMO goals, explain driver responsibilities and promote consistent, effective responses that improve safety for first responders and motorists stopped along roadways.
