Final answer:
One of the three commonly used positions for an unknown risk traffic stop is 'in line,' which allows for safety and visual monitoring of the vehicle by the officer. Other positions include 'offset' and 'fanned,' enhancing officer safety and situational control.
Step-by-step explanation:
One of the three commonly used positions for an unknown risk traffic stop is in line. This position allows the officer to maintain a safe distance while keeping the vehicle in view. It's essential for the officer to assess the situation and decide the best course of action based on the circumstances surrounding the traffic stop.
Other common positions used can include offset and fanned, which are designed to provide both safety to the officer and clear observation of the vehicle's occupants. It is important to remember that during any traffic stop, officers must be attentive and prepared for any potential risks, and these positions are adopted to maximize the officer's safety and control over the situation.