Behind every deadly collision or hit-and-run in New York City stands a specialized NYPD team devoted to uncovering the truth. The NYPD Transportation Collision Investigation Squad, led by Lt. Jag Singh, has become one of the most advanced investigative units in the country, using cutting-edge technology to identify suspects and deliver justice for victims and their families.

The unit operates citywide and is responsible for handling the most serious traffic incidents—from fatal crashes to high-impact hit-and-runs that leave communities searching for answers. Their work begins the moment a call comes in. Within minutes, investigators arrive on scene equipped with technologies once seen only in military or high-end forensic environments.

Drones are deployed to capture aerial views of crash sites, providing angles and data points that traditional photography can’t replicate. Highly accurate 3D scanners map the scene down to the millimeter, allowing investigators to reconstruct the collision digitally and analyze trajectories, speed, impact angles, and vehicle movements. Advanced forensic tools help identify vehicle fragments, paint transfers, and tire marks that can be traced back to specific makes and models—often leading to the suspects themselves.

Under Lt. Singh’s leadership, the squad blends traditional investigative skill with modern engineering and data analysis. Every crash becomes a puzzle, and every piece of evidence matters. Their work not only leads to arrests but also supports the broader Vision Zero initiative, which aims to eliminate traffic fatalities across the city.

The results speak for themselves. Through September 2025, New York City recorded a significant 18% drop in traffic fatalities, reaching just 159 deaths—one of the lowest figures in recent years. Officials credit the decline in part to the Collision Investigation Squad’s ability to quickly close cases, deter dangerous driving behaviors, and reinforce accountability on the roads.

For grieving families, the squad provides something no statistic can measure: answers. Their commitment ensures that drivers who flee the scene are not simply forgotten but are tracked, identified, and brought before the law. In a city as large and complex as New York, the NYPD’s Collision Investigation Squad stands as a critical force ensuring justice, closure, and safer streets for all.