Crash avoidance systems are intended to help drivers avoid or mitigate the severity of crashes by providing warnings or active control interventions. This research program was conducted to provide new knowledge, models, and tools to enable improved designs of automotive crash avoidance systems and more effective deployment strategies. To undertake a comprehensive approach to analyzing these systems, this project considered other effects that influence crash types and mechanisms, including the use of other technologies, driver behavior differences, new public policies, driver demographics, or other influences. As the first of several analyses, the team estimates the effectiveness and safety benefits of forward crash avoidance and mit...