The present invention discloses a drone or unmanned aerial vehicle (UAV) mounted on a law enforcement vehicle for the purposes of interfacing with occupants of a stopped vehicle after being pulled over for a traffic violation or routine stop. The drone is equipped with a navigation system, obstacle-avoidance sensors, a telepresence system (a camera, microphone, speaker and screen), and a robotic arm with a secure box and a device for estimating blood alcohol content. Once a suspect vehicle has been pulled over by a law enforcement officer, without leaving the safety of a law enforcement vehicle, the officer deploys the drone to perform a visual check of the interior of the suspect vehicle for dangerous items, ascertain if an occupant's face triggers any flags on a central database, administer a sobriety test, collect the necessary documents and deliver a citation to the driver via the secure box.