Business Logistics Intermodal Traffic Rises 5.6% for Week TT File Photo July 13, 2012 4:30 PM, EDT U.S. intermodal traffic rose 5.6% last week, the Association of American Railroads reported. Container traffic for the week ended Saturday rose to 178,416 units, whileÌýtrailers fell 5.3% to 24,946 units. Railroad carloads excluding intermodal dipped 1% to 243,156 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 Study: Tighter Intermodal Chassis Regulation Enforcement Needed Stoughton Launches Intermodal Container, Smart Chassis Hub Group Buys Marten’s Intermodal Unit for $51.8 Million