The Association of American Railroads has reported increased U.S. rail traffic for the week ending Sept. 13, including intermodal volume posting another record this year.

There were 300,388 total carloads, up 1.4% compared with the same week last year. Total U.S. weekly intermodal volume was 279,052 units, up 5% compared with the same week last year, a new high for railroads. Total combined U.S. weekly rail traffic was 579,440 carloads and intermodal units, up 3.1% compared with the same week last year.

For the first 37 weeks of 2014, U.S. railroads reported cumulative volume of 10,718,782 carloads, up 3.5% compared with the same point last year, and 9,522,482 intermodal units, up 5.6% from last year. Total combined U.S. traffic for the first 37 weeks of 2014 was 20,241,264 carloads and intermodal units, up 4.5% from last year.

Combined North American rail volume for the first 37 weeks of 2014 on 13 reporting U.S., Canadian and Mexican railroads totaled 14,228,682 carloads, up 3% compared with the same point last year, and 12,017,077 intermodal containers and trailers, up 5.8% compared with last year.

This past summer U.S. intermodal rail volume set new records in both weekly and monthly figures.