This Is Why Cops Touch Your Car’s Tail Light During Traffic Stops

According to The Law Dictionary, this routine maneuver serves as a sort of bread crumb left to prove that the police officer had approached that particular vehicle. Before dash cams and body cams, the fingerprints left on the tail light served as a primary form of evidence about the traffic stop. If the officer’s safety were to be jeopardized by the driver, investigators could track that hand stamp to the suspect in question.