Flatcar, 89 Foot, TOFC

History: A flatcar (US) (also flat car (US) or flat wagon (UIC)) is a piece of railroad (US) or railway (non-US) rolling stock that consists of an open, flat deck mounted on a pair of trucks (US) or bogies (UK), one at each end containing four or six wheels. Occasionally, flat cars designed to carry extra heavy or extra large loads are mounted on a pair (or rarely, more) of bogeys under each end . The deck of the car can be wood or steel, and the sides of the deck can include pockets for stakes or tie-down points to secure loads. Flatcars designed for carrying machinery have sliding chain assemblies recessed in the deck.

Flatcars are used for loads that are too large or cumbersome to load in enclosed cars such as boxcars. They are also often used to transport intermodal containers (shipping containers) or trailers as part of intermodal freight transport shipping.

TOFC (Trailer On Flat Car, a.k.a. piggy-back) cars came is various length to accommodate usually two trailers: 50' for two 24' trailers, 75' for two 35' trailers, 85' for two 40' trailers and 89' for two 45' trailers.

The 89' flats were introduced by the late 1960's and progressively replaced the 85' in the late 1970's given the introduction of 45' trailers. The common "Triple 28'/Twin 45" allowed versatile configurations.

From Wikipedia

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