Learn why trajectory-based observation matters - and how tracking movement over time reveals behavior, interactions, and safety patterns that point-based data can miss.

Explore what is visible when speed is observed through movement, not summarized at a point. Trajectory-based observation reveals how speed choices unfold across the roadway, like instant replay for traffic operations.

Understand where people actually cross the street when movement is observed over time. Trajectory-based observation reveals how distance, delay, and time pressure shape crossing choices across the roadway, turning isolated moments into repeatable patterns.

Explore how harmful speed emerges when higher speeds, speed variation, and pedestrian exposure overlap. When we observe movement across space and time, those segments become visible.

Take a closer look at why crossings should be measured as events, not just counts, and how that perspective can change how we understand corridor safety.

Turn our attention to drivers waiting on a minor road to enter a busy arterial and how those gaps shape both safety and congestion at the intersection.

Explore what crowdsourced data misses about how streets are actually used, and how combining it with observed behavior helps tell a clearer story.

Learn more about turning behavior and what no turn on red reveals about how drivers actually use intersections.

Take a closer look at why visual context changes conversations around roadway safety and decision-making.