The Challenge: Workers on roadway construction sites face the risk of death or serious injury from passing motorists, construction vehicles and equipment. From 1992-2000 there were 910 worker fatalities in work zones, and over 90 percent of these deaths involved a motor vehicle, a piece of construction equipment, or both. Workers on foot accounted for more than 500 of these work zone deaths. Impact: NIOSH hosted a 3-day workshop that brought together 60 key stakeholders from government agencies, labor unions, and private employers to discuss measures to reduce worker injuries from vehicles and equipment. Researchers analyzed injury data, reviewed scientific literature, and developed "white papers" to focus discussion at the workshop. NIOSH then compiled research results and workshop participant input into a highway work zone safety guide. Approach: In 2001, researchers compiled the NIOSH document, Building Safer Highway Work Zones. During the publication's development, researchers incorporated comments obtained through a Federal Register notice and direct requests to stakeholders. To date, over 21,000 copies have been distributed. The publication addresses a broad range of interventions, ranging from construction operations to management practices. It also includes case studies for use in training sessions or safety talks. Results: The project's primary impact is a greater recognition that construction vehicles pose a substantial safety risk to employees in highway work zones among the government and industry groups that build and oversee the Nation's roads. Building Safer Highway Work Zones has been used to develop core modules of worker training programs, supplement insurance carrier risk management plans, inform regulatory efforts at the State and national level, and guide work zone safety research programs.