Why do cops touch the back of the car

Overview

The practice of police officers touching the back of a vehicle during traffic stops has been a subject of public curiosity for decades. This seemingly simple action has deep roots in law enforcement safety protocols that developed throughout the 20th century. The technique gained particular attention in the 1970s and 1980s as police departments across the United States formalized their officer safety training programs. While the exact origin is difficult to pinpoint, many police academies began teaching this method as part of standard traffic stop procedures during this period. The practice reflects broader concerns about officer safety during traffic stops, which account for a significant portion of police-citizen interactions. According to Bureau of Justice Statistics data, police conducted approximately 20 million traffic stops in 2018 alone, making these encounters one of the most common forms of police-public contact. The fingerprint evidence left by touching the vehicle serves as a forensic trail that can be crucial in investigations.

How It Works

When an officer approaches a vehicle during a traffic stop, they typically touch the trunk or rear bumper area with their bare hand. This action leaves latent fingerprints on the vehicle's surface, which can be recovered by forensic investigators if needed. The fingerprints serve as physical evidence that the officer was present at that specific vehicle at that particular time. This becomes particularly important if the officer is attacked, goes missing, or if there's a dispute about what occurred during the stop. The practice is part of a broader set of safety protocols that include positioning the patrol car at an angle behind the stopped vehicle, approaching from the driver's side at a slight angle, and maintaining situational awareness. Many departments teach officers to touch the vehicle with the hand opposite their gun hand to maintain readiness while leaving evidence. The fingerprints can be matched to the officer's prints on file, providing definitive proof of their presence at the scene.

Why It Matters

This practice matters because it represents a simple yet effective safety measure in high-risk situations. Traffic stops are statistically dangerous for law enforcement officers - according to FBI data, from 2011 to 2020, 91 officers were killed during traffic stops or pursuits. The fingerprint evidence can be crucial in investigations of officer assaults or disappearances, helping to establish timelines and connections between officers and vehicles. Beyond individual safety, the practice contributes to accountability and transparency in police-citizen interactions. It provides forensic evidence that can corroborate or challenge accounts of what happened during a stop. While some critics argue the practice might make drivers nervous, law enforcement agencies maintain that officer safety must be prioritized. The technique exemplifies how simple procedural steps can have significant implications for both officer protection and investigative integrity in law enforcement operations.