Each week, the major North American railroads report their traffic for the previous week to AAR. This data is published in AAR’s Weekly Railroad Traffic report each Wednesday. Carload traffic is classified into 20 major commodity categories such as coal, chemicals, grain, and primary metal products. Rail intermodal traffic (shipping containers and truck trailers moved on rail cars) is reported separately.

Below are the major rail traffic groups and the associated weekly railroad traffic commodity categories.

Go to Rail Traffic Data


  • Chemicals


  • Coal

Farm Products excl. Grain & Food

  • Farm products excl. grain
  • Grain mill products
  • Food products

Forest Products

  • Primary forest products
  • Lumber and wood products
  • Pulp a paper products


  • Grain

Metallic Ores & Metals

  • Metallic ores
  • Coke
  • Primary metal products
  • Iron and steel scrap

Motor Vehicles & Parts

  • Motor vehicles and parts

Nonmetallic Minerals

  • Crushed stone, sand and gravel
  • Nonmetallic minerals
  • Stone, clay and glass products

Petroleum & Petroleum Products

  • Petroleum and petroleum products


  • Waste and nonferrous scrap
  • All other carloads

Intermodal Units

  • Containers
  • Trailers