In what year was the first highway safety manual released?

The first Highway Safety Manual was released in 2010. This manual was a significant development in the field of transportation safety, as it aimed to provide a comprehensive set of guidelines and methodologies to assess safety on roadways. The manual serves as a key resource for practitioners and policy makers in the field, contributing to better decision-making regarding safety improvements and interventions. It marked a pivotal moment in the integration of safety performance into the planning and design of roadways, highlighting the importance of a data-driven approach to enhancing safety for all road users.