Which of the following is NOT a tool required to complete a pre-trip inspection?

A pre-trip inspection is a critical process that drivers must undertake to ensure that their vehicle is safe and roadworthy before starting any journey. The tools used during this inspection typically include those that help the driver check essential components of the tractor-trailer.

A screwdriver can be used to check for loose connections or components during the inspection. Similarly, a tire pressure gauge is necessary for checking the tire pressure, which is crucial for safe driving and tire longevity. A flashlight is also important because it allows for proper inspection of hard-to-see areas or components, especially in low-light conditions.

An impact wrench, however, is not typically necessary for a pre-trip inspection. This tool is generally used for tightening or loosening bolts and nuts when performing maintenance on the truck but does not play a role in the inspection itself. Therefore, identifying the tools that are essential for performing checks rather than maintenance is key to understanding which option does not belong in the context of the pre-trip inspection process.