The embodied invention is a foldable aerodynamic drag reducing plate assembly that is installed on shipping container ends. The drag reducing plates are in two parts and designed to incorporate hinges and attaching components specifically for the spacing and position of corner lifting holes that are part of a standard container shipping car. The drag reducing plates include locking bars that provide stability when a train is moving at high speed. Also, connecting clips, stiffening channels, or hinges are used to combine two halves of the drag reducing plate design into a single, stiffened unit.