Which organization provides guidelines for highway safety best practices?

The Federal Highway Administration (FHWA) is the organization that provides guidelines for highway safety best practices. This agency operates under the U.S. Department of Transportation and is responsible for overseeing the nation's highway transportation system. Its mission includes improving the safety, efficiency, and effectiveness of the highway network. The FHWA develops guidelines and sets standards focused on reducing road user fatalities and injuries, improving highway design and construction practices, and promoting effective traffic management and enforcement strategies.

In this context, the FHWA's guidelines encompass a wide array of practices related to roadway safety, which includes aspects like signage, signalization, road design, and maintenance protocols. Therefore, when discussing best practices for enhancing highway safety, the FHWA is the principal organization that provides authoritative resources and recommendations for various stakeholders, including engineers, policymakers, and safety professionals.