Which method is NOT recommended when preparing to back a tractor-trailer?

Moving too quickly to get the job done is not a recommended method when preparing to back a tractor-trailer. Backing a large vehicle requires careful attention to detail, spatial awareness, and the ability to respond to changing conditions. If a driver rushes the process, they can easily overlook important cues, which increases the risk of accidents or property damage.

In contrast, using mirrors extensively, having a ground guide, and aligning the trailer before reversing are all best practices that enhance safety and improve maneuverability. These methods ensure that the driver has a clear view of their surroundings and receives guidance from another person, which can significantly help in navigating tight spaces and avoiding obstacles. Taking time to perform these actions with care leads to a more controlled and successful backing maneuver.