Yes — semi-trailers are classified independently of the tractor units under the HTS, typically under headings specific to trailers and semi-trailers for the transport of goods. The duty treatment, and any applicable trade-remedy exposure, is determined by the trailer's own classification, not by the tractor it is paired with.

Refrigerated van bodies and insulated cargo bodies may be classified differently from standard cargo bodies depending on their construction and whether they are imported as part of a complete vehicle or as a separate article. The presence of integrated refrigeration equipment can shift classification toward a more specific HTS heading. Importers should obtain a binding ruling from CBP when the configuration is non-standard.