Freight Rail Traffic - Carloads

Rail carload traffic is comprised of mostly bulk commodities, such as coal and agricultural products. The Association of American Railroads releases data on carloads and intermodal units originated by U.S. railroads on a weekly and monthly basis.

铁路整车货运（Rail carload traffic）的主要承运品类为散装大宗商品，涵盖煤炭与农产品。美国铁路协会（Association of American Railroads）会按周、按月发布由美国本土铁路公司承运的整车货运量及多式联运单元（intermodal units）相关统计数据。