McDonald’s introduced the Speedee Service System at its San Bernardino restaurant in 1948.
Maurice and Richard McDonald redesigned their California drive-in after deciding that a limited menu and faster preparation could serve customers more efficiently. They closed the restaurant temporarily, reduced the menu, and organized food preparation in a system resembling an assembly line.
The new operation emphasized hamburgers, fries, milkshakes, and rapid service. The name “Speedee Service System” reflected its central promise: customers would receive standardized food quickly. This model became a foundation for the modern fast-food industry and later influenced the franchise system associated with McDonald’s.
The 1948 date is sometimes confused with 1940, when the McDonald brothers opened their original barbecue drive-in in San Bernardino. The later date marks the major service and branding transformation, not the company’s first restaurant opening.