center partition railway car
(rail transportation) A platform-type railroad car featuring a longitudinal center partition to which cargo can be secured. Center partition railcars (also called centerbeam flatcars) are designed to be loaded from both sides. Common commodities transported include lumber, plywood, building materials, and other packaged products. Decks are canted toward the center of the railcar and have floor risers suitable for packages without preattached dunnage.