As a safety researcher, Dr. Gross is involved in the development of national safety management tools such as the Highway Safety Manual, Crash Modification Factors (CMF) Clearinghouse, and several guides related to Road Safety Audits (RSAs). As a safety engineer, he implements and promotes the use of these national tools, supporting state, tribal, and local agencies with their Highway Safety Improvement Programs (HSIP). He regularly:• Develops and applies safety performance functions (SPFs) for network screening.• Conducts RSAs to diagnose safety issues and develop mitigation measures.• Applies CMFs to select cost-effective countermeasures.• Conducts benefit-cost analyses to support HSIP funding applications.• Conducts rigorous before-after evaluations to assess the effectiveness of safety-related projects.• Develops and delivers training and guidance on the proper application of safety management tools. His national exposure and involvement in the development of safety management tools keeps him well-informed of the latest tools and techniques. His work with state and local agencies has given him firsthand insight into the challenges faced by these agencies when trying to implement the latest tools and techniques.