Identify two recommended positions for a patrol unit during an unknown risk stop.

Offset positioning and left angle positioning are recommended for a patrol unit during an unknown risk stop because they provide tactical advantages in terms of both visibility and coverage. By using offset positioning, an officer can maintain a safe distance while being able to observe the vehicle and its occupants without presenting a direct target. This positioning also allows for better maneuverability if the situation escalates.

Left angle positioning ensures that the officer is not directly approaching the suspect's vehicle head-on, reducing the risk of surprise attacks while still allowing for effective communication and observation. This method also helps protect the officer from potential ambush situations, as it provides a more advantageous angle from which to assess threats while keeping an escape route in mind.

These strategies are critical in an unknown risk scenario, as they enhance the officer's safety and situational awareness, which are vital during traffic stops where the risk level is uncertain.