Total intermodal traffic grew in the third quarter of 2013 by 4.7 percent, year-over-year, attributable to gains across the board, according to the Intermodal Association of North America. Domestic container volume continued to lead intermodal growth, posting a year-over-year increase of 9.4 percent, and combined with a 1.2 percent boost in intermodal trailer volume for the same period, all domestic equipment experienced 7.6 percent year-over-year gains during the third quarter of 2013.