Home/American Shipper/AAR: U.S. rail volume growth continues American ShipperShippingTrade and Compliance AAR: U.S. rail volume growth continues FreightWaves Staff · Friday, May 04, 2018 Facebook Twitter/X LinkedInTotal U.S. freight rail shipments climbed another 5.1 percent for the month following year-over-year gains of 5 percent in March and 3.3 percent in February. N/A