As improvements multiplied, the team realized that producing in large batches created inventory, masked problems, and delayed feedback. They experimented with reducing lot sizes and organizing work cells so parts flowed smoothly from one operation to the next. Flow replaced batch thinking. Production became pull-driven: downstream demand signaled upstream work. Kanban cards—simple visual tokens—were introduced to control inventory and synchronize operations. When a bin emptied, it was a clear pull to replenish, not a push to flood the floor.
Takahiro Fujimoto’s 1999 study, "The Evolution of a Manufacturing System at Toyota," details how the automaker established long-term competitive advantage through evolutionary learning, integrating Just-in-Time and Jidoka over decades. The report highlights that Toyota’s success stems from deep-seated manufacturing capabilities developed to solve specific challenges, rather than just tools. The full report is available for digital borrowing at Internet Archive ResearchGate (PDF) The Evolution of Production Systems - ResearchGate the evolution of a manufacturing system at toyota pdf
Any comprehensive PDF on Toyota’s evolution must address the 2009-2010 recall crisis and the 2011 Tohoku earthquake. Critics said TPS had failed. The PDFs tell a more nuanced story. As improvements multiplied, the team realized that producing
The book explores the evolution of Toyota's manufacturing system, from its early days to the present. The author, Takahiro Fujimoto, analyzes the development of Toyota's production system, highlighting the key factors that contributed to its success. The book provides insights into Toyota's innovative approaches to manufacturing, including its famous just-in-time (JIT) production system and total productive maintenance (TPM). Takahiro Fujimoto’s 1999 study, "The Evolution of a
Ohno was inspired by the work of Henry Ford, who had pioneered the concept of the assembly line. However, Ohno realized that Ford's system was not adaptable to the diverse and changing needs of the post-war Japanese market. Ohno set out to create a new production system that would allow Toyota to produce high-quality vehicles at a lower cost.