Pullman-Standard dominated the covered hopper car market
beginning in the
1950s, thanks to the design success of their
PS-2 series of covered hoppers.
In 1964 the 4427 cubic foot
capacity covered hoppers were introduced. PS
increasing demand for efficiency by the railroads and shippers
alike, carrying more per trip then the 40 boxcars with the
grain door. Designed to carry bulk commodities, such
as grain, these cars
roamed the rails of North America for
decades, attesting to their utilitarian
functionality. These cars
can still be seen today in service.