Among all standardized container formats, 20ft and 40ft containers remain the most widely used, but their roles within the global logistics ecosystem have evolved significantly. Today, 40ft containers dominate modern volume-driven trade, supporting the majority of international cargo movement. Meanwhile, 20ft containers continue to play an essential but increasingly specialized supporting role, particularly in weight-sensitive and access-restricted shipments. This shift reflects changes in port automation, intermodal transport systems, sustainability goals, and commercial shipping strategies.
