When operating a school bus, mirrors should be adjusted: Question When operating a school bus, mirrors should be adjusted: Answers During the drive. Before beginning to drive. After the drive is completed. Explanation It is critical to the safe operation of a school bus that mirrors be properly adjusted. Always check each mirror before operating the bus. This questions appears in the following tests: Alabama Bus Hawaii Bus Iowa Bus Louisiana Bus Louisiana Bus Maine Bus Missouri Bus Nevada Bus New Hampshire Bus Ohio Bus Oregon Bus Rhode Island Bus South Carolina Bus Utah Bus