During an unknown risk traffic stop, the patrol vehicle should usually be offset to the left. However, it ultimately depends on the specific situation and the officer's assessment of the risk. Offset positioning helps create a barrier between the officer and oncoming traffic, reducing the risk of being struck by passing vehicles. By positioning the vehicle to the left, it allows the officer to have a better view of the traffic and potential threats approaching from the right side. However, depending on factors such as road conditions, visibility, and the location of the stop, the officer may choose a different offset position.