The Interchange

Federal crash and roadway data underpin efforts to reduce collisions by identifying where and why severe injuries cluster on U.S. streets. Transportation agencies use standardized datasets to map high-injury corridors, spot recurring risk factors, and prioritize evidence-based interventions. Analytical tools help compare locations, track changes over time, and evaluate the impact of designs that manage speed, improve visibility, and protect people walking or cycling. The same information supports grant applications, performance targets, and public transparency, enabling local, state, and federal coordination. By moving beyond anecdotes to consistent metrics, practitioners can direct limited funds to the places with the greatest safety payoff and adjust strategies as new patterns emerge.