(pull system) to synchronize production with market demand rather than speculative forecasts. The Oil Crisis Shift (1973):
The development of Toyota's final assembly line demonstrates this evolutionary learning process in action. In the 1960s, Toyota faced a challenge: a rapid increase in production volumes and expanding vehicle specifications. They initially installed an online control system with terminals to provide production instructions, but this led to confusion and assembly errors. In a classic example of Kaizen, they stopped using the terminals and created a simpler, more flexible method: attaching instruction sheets directly to the vehicle bodies. By making the target of the work itself the source of instruction, they eliminated errors and could respond flexibly to any change.
Using IoT (Internet of Things) and AI to enhance Jidoka, enabling predictive maintenance rather than just reactive stoppage.
Following World War II, Toyota needed a way to produce a wide variety of vehicles in small volumes rather than the high-volume, low-variety approach used in the US. Taiichi Ohno , a Toyota executive, refined the JIT and Jidoka concepts into a formalized system. the evolution of a manufacturing system at toyota pdf
: Storing excess raw materials or finished goods. Unnecessary Motion : Any wasteful movement by workers. Defects : The time and cost required to fix errors. 3. Core Tools and Methodologies
, analyzes the Toyota Production System (TPS) as an evolutionary, capability-building process rather than a static set of tools. The study details how Toyota developed competitive advantage through integrated supplier, development, and assembly systems built on trial-and-error learning. Access the book via the Internet Archive Internet Archive
Integration of NC machines, robots, and automated production instructions. Electronic Kanban Adoption of electronic Kanbans for long-distance suppliers. Core Evolutionary Principles (pull system) to synchronize production with market demand
By the time of the 1973 oil crisis, TPS had become a fully integrated system. While other Japanese manufacturers struggled with zero economic growth, Toyota’s low-inventory, highly flexible system allowed it to adapt and survive, bringing TPS to the attention of the global industry. Today, the principles documented in books like Fujimoto’s and Womack’s The Machine That Changed the World continue to influence not just automotive manufacturing, but healthcare, software development, and logistics.
Toyota organized its suppliers into a tight-knit network where knowledge, best practices, and cost-reduction methodologies were shared openly.
A 1978 MIT working paper (now a legendary PDF) by James Harbour first used the term "Lean" (though it would be popularized later). The paper compared the number of labor hours to assemble a car: They initially installed an online control system with
Takahiro Fujimoto's The Evolution of a Manufacturing System at Toyota provides a detailed analysis of how the Toyota Production System (TPS) developed through decades of necessity, focusing on waste elimination, continuous improvement, and evolutionary learning capabilities. The work highlights foundational concepts like Jidoka (automation with a human touch) and Just-in-Time (JIT) manufacturing, which evolved from post-war constraints into a global standard for lean production. A digital scan of the book is available for borrowing at Internet Archive . The Evolution of a Manufacturing System at Toyota
Learning how to identify and eliminate waste.