Both December and calendar year 2019 intermodal volumes saw annual declines, according to data provided to LM by the Intermodal Association of North America (IANA). Total December volume—at 1,409,128—dropped 8.2% annually. Domestic containers—at 595,597—were off 2.7%, and trailers–at 103,897—were off 17.2%. All domestic equipment—at 699,494—was off 5.2%. ISO, or international, containers—at 709,634—saw a 10.9% decline.