The first-generation Ford F-Series is a series of pickup trucks and commercial vehicles produced by Ford. Introduced in 1948, the F-Series was the first post-war truck design from Ford. In a break from previous Ford trucks, the F-Series was no longer based upon its car chassis, but on a dedicated truck platform. This generation of the F-Series would remain in production until 1952. F-Series trucks were assembled at sixteen different Ford factories. Serial numbers indicate the truck model, engine, year, assembly plant, and unit number. The most common model was the F-1 with a 6 ½-foot bed followed by the F-2 and F-3 Express models with an 8-foot (2.4 m) bed.