Question When checking your mirrors: Answers The passenger side mirror should not be used. The driver's side mirror should not be used. Mirrors on both sides of the vehicle should be used. Explanation Regularly check mirrors on both sides of your vehicle while driving. It is important to be aware of what is happening behind and to the sides of your vehicle. Take a FREE Practice Test Now This questions appears in the following tests: Wyoming Knowledge Test Class A , Idaho Knowledge Test Class B , Missouri Passenger ,