Abstract: According to some embodiments, a railcar extension for extending the width of a railcar comprises: a top portion for attaching to a railcar support; a first side portion coupled to the top portion, the first side portion comprising two parallel transverse walls connected by a longitudinal wall all extending perpendicular from the top portion and the two transverse walls are for attaching to the railcar support; a second side portion coupled to the first side portion, the second side portion comprising two parallel transverse walls connected by a longitudinal wall all extending downward from the first side portion and the two transverse walls are for attaching to the railcar support, and wherein the second side portion pivots with respect to the first side portion to conform to the railcar support; and a bottom portion coupled to the second side portion, the bottom portion for attaching to the railcar support.

Abstract: According to some embodiments, a modular railcar comprises: a pair of trucks disposed near each end of the modular railcar; an underframe coupled to the pair of trucks and supported by the pair of trucks. The underframe comprises a plurality of coupling apparatus. The plurality of coupling apparatus are configured to couple a modular top container to the underframe. According to some embodiments, a modular top container comprises: a floor panel configured to transport a lading; and a plurality of coupling apparatus coupled to the floor panel. The plurality of coupling apparatus are configured to couple the modular top container to a modular railcar. The floor panel is configured to support the weight of the lading when detached from the modular railcar.

Abstract: A gondola car is made of high strength and high abrasion resistance steel that provides a lightweight structure and that prolongs the useful life of the car. The high strength and high abrasion resistance steel enhances the strength of the gondola car without increasing its thickness. The contemplated railcar positions components (e.g., side posts and cross-bearers) of the railcar away from areas of the railcar that experience high stresses during transport. In this manner, these components can be welded to form the railcar, and the welds will experience less stress during transport resulting in less weld breaks. Additionally, the number of components (e.g., side posts and cross-bearers) may be reduced, which reduces the weight of the railcar.