Home » Training » Trailer Glossary » Tractor TractorA Tractor (semi-truck) is a motor vehicle designed primarily to pull a semi-trailer. The connection is made via a fifth wheel that is mounted over the rear axle. Tractor Manufacturers / BrandsFreightlinerInternationalKenworthMackPeterbiltVolvoWestern Star Click to share on Facebook (Opens in new window)Click to share on X (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)