Mirror adjustment can only be checked properly if: Question Mirror adjustment can only be checked properly if: Answers The trailer is straight. There is no trailer attached to the tractor. The vehicle is on a slight incline. The vehicle is on a slight decline. Explanation If a trailer is attached to a tractor, the adjustment of the vehicle's mirrors can only be checked accurately if the trailer is straight. This questions appears in the following tests: Colorado Class A Knowledge Test Georgia Passenger Illinois Class B Knowledge Test Montana Tank New Jersey Class A Knowledge Test New Jersey Double North Dakota Class B Knowledge Test Pennsylvania HazMat Pennsylvania Tank Wisconsin Class B Knowledge Test Wisconsin Passenger
