Weekly U.S. intermodal rail traffic declined from the same period last year for the first time in five months, but increased in July, the Association of American Railroads reported.

Increased international cargo propelled intermodal freight 4.5% higher in the second quarter, driven by a combination of stronger imports and recovery from early 2015 port disruptions, the Intermodal Association of North America reported.

Truck-rail intermodal companies are standing on peaks of record volume, but an array of operational, financial and technical issues will challenge their ability to sustain current levels and continue growing, industry experts said.

U.S. rail intermodal traffic rose 2.3% for the week ended July 18 as carloads continued to decline, the Association of American Railroads reported.

U.S. rail intermodal traffic rose 12.3% for the week ended July 4 as carloads continued to decline, the Association of American Railroads reported.

U.S. rail intermodal traffic rose for the week ended June 13 as carloads declined for the 11th consecutive week, the Association of American Railroads reported.

U.S. rail intermodal traffic rose to the highest level on record for the week ended June 13, the Association of American Railroads reported.

U.S. rail intermodal traffic rose to the second-highest level this year for the week ended June 6, the Association of American Railroads reported.

U.S. rail intermodal traffic surpassed carload volume in May for the first month on record, the Association of American Railroads reported.