Business Logistics Intermodal Traffic Drops 9.3% for Week January 13, 2012 1:30 PM, EST U.S. intermodal traffic fell 9.3% for the week ended Saturday from a year ago, the Association of American Railroads reported. Container traffic declined 8.4% to 167,411 units, while trailer traffic dropped 14.3% to 26,401 units, AAR said in its weekly report. Railroad carloads excluding intermodal decreased 3.7% to 274,862 units, AAR said. Railroad volume is considered an important economic indicator. Intermodal traffic, which tends to be higher-valued merchandise than bulk commodities, uses trains for the long haul and trucks for the shorter distance at either end of the trip. Ìý More Content About: intermodal Related Articles IANA Panel Tackles Downstream Effects of Intermodal Disruptions IANA Applauds Outgoing President Joni Casey Perspective: Cargo Integrity Plan Reduces Risk