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SITCSection 7
U.S. imports of road tractors for semi-trailers (SITC 78320) totaled $718.8M in July 2026, traded with 8 countries.
Importers of Road Tractors for Semi-Trailers paid $127.9M in duties in July 2026 — an effective duty rate of 25% on $511.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Road Tractors for Semi-Trailers imports of $718.8M in July 2026 ran 54% above the year-to-date monthly average of $468.1M.
Last updated: July 2026 dataRoad tractors — the powered units designed exclusively to haul semi-trailers — are a foundational element of long-haul freight infrastructure and a widely traded commodity in North American supply chains. These vehicles are subject to Section 232 tariff measures when imported from certain origins, and NHTSA Federal Motor Vehicle Safety Standards apply at entry. The US market draws heavily from North American manufacturing, though global sourcing patterns shift with fleet-renewal cycles and fuel-technology transitions toward natural gas and electric drivetrains.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
7.2K shipments/mo
Basic heading 32 of 642 in section 7
Basic heading 78320 · $718.8M of $175.6B
Imported road tractors must conform to NHTSA Federal Motor Vehicle Safety Standards (FMVSS) applicable to heavy trucks. The importer must file a HS-7 declaration at entry confirming conformity. Vehicles not meeting FMVSS must be brought into compliance within a specified period or exported; non-conforming tractors cannot be sold or operated on US roads.
At the SITC level, road tractors for semi-trailers are grouped regardless of fuel type, but at the HTS 10-digit level, engine type (diesel, spark-ignition, electric) can determine the specific subheading and applicable duty rate. As natural gas and battery-electric Class 8 tractors enter the market, importers should verify the correct HTS line for each powertrain variant to avoid misclassification.
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Imports · July 2026
origin
Mexico and Canada together supply 100% of it.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$718.8MYoY · Pro
Exports
$157.1MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.