Home » Training » Trailer Glossary » Triples TriplesTriples refers to a tractor-trailer configuration in which a tractor pulls three trailers, each connected by a converter dolly. See AlsoDoubles 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)