This manual explains how to identify and address hazardous traffic blackspots in Central Asia Regional Economic Cooperation (CAREC) countries to help save lives, reduce injuries, and support economies. Drawing on case studies, the manual highlights the importance of crash data and explains how to pinpoint and assess blackspots and how to adjust roads, signage, and lighting to address them. Designed to support engineers, police, and planners, it discusses how to prioritize locations in allocating funding and why tackling high-frequency sites is cost-effective as well as lifesaving.