Home/American Shipper/U.S. intermodal traffic posts 4.7% gain in Q3 American ShipperIntermodal U.S. intermodal traffic posts 4.7% gain in Q3 FreightWaves Staff · Friday, November 01, 2013 Facebook Twitter/X LinkedIn International traffic has been in decline due to the contents of many 40-foot international containers being immediately transferred to domestic 53-foot units at seaports, but during the third quarter, international volume grew 2 percent.