The Andon System is a method for quickly identifying and resolving problems in the production process. In Lean Construction, the Andon System is used to increase the efficiency and quality of construction projects.

The main principles of the Andon System are:

• Visualization of problems: The Andon System uses visual and audible signals to quickly and easily identify problems and disruptions in the construction process.
• Immediate response: If a problem arises, the construction process is halted and the problem is rectified immediately to ensure consistently high quality.
• Employee participation: Employees are involved in the application of the Andon System and are responsible for reporting problems and helping to solve them.

The advantages of the Andon system in lean construction include:

• Quick problem detection and resolution: Visualizing problems and responding immediately enables rapid problem solving, thereby increasing the efficiency and quality of construction processes.
• Reduction of waste: The application of the Andon System helps to identify and rectify errors and quality defects at an early stage, thereby minimizing waste.
• Employee satisfaction: The active participation of employees in the Andon System promotes motivation and satisfaction among the workforce.