Mirrors should be checked: Question Mirrors should be checked: Answers Before every lane change. When changing lanes, but only when other vehicles are nearby. When changing lanes, but only if it is dark outside. Explanation Always check for traffic in your mirrors before changing lanes. Frequent mirror checks should be a part of your normal scanning routine. This questions appears in the following tests: Alabama Passenger California Class A Knowledge Test Delaware Class A Knowledge Test Delaware Class B Knowledge Test New Mexico Class A Knowledge Test Rhode Island Class A Knowledge Test Utah Tank Wisconsin Class B Knowledge Test
