CHAPTER 1: INTRODUCTIONAssembly lines are manufacturing processes that are of great importance in the industrial production of customized products in large quantities or even in low volumes. In an assembly line, two or more different jobs are assembled sequentially to form a new finished product. An assembly line is a flow-oriented production system, in which part operations are carried out in designed stations. Workpieces are moved along stations on a line, usually by some sort of transportation system, for example a conveyor belt, transfer lines, or cranes. Henry Ford, the founder of the Ford Motor Company, is the father of modern assembly lines by introducing the use of assembly lines. This revolutionary assembly line was intended for mass production of the Model T automobile between 1908 and 1915 (Uddin et al., 2011). Assembly lines were basically introduced and designed for cost-effective mass production of standardized products, also exploiting high technology. specialization of work. However, in the modern manufacturing system, product requirements and their production systems have changed dramatically, mainly due to customer needs. Manufacturing companies must allow individualization of their products, offer more complex manufacturing strategies and assembly systems (Uddin et al., 2011). The design and configuration of assembly lines in the modern era requires high capital investment, which has attracted the attention of researchers to solve the problem of assembly lines and optimize their efficiency in terms of productivity and cost (Boysen et al., 2006).1.1 Context of Modern Era StudyThere are many types of assembly lines that are designed and implemented in modern manufacturing. The designs of ...... middle of paper ...... final assembly line and final inspection (Figure 3.2). The final assembly line of the commercial vehicle section is generally divided into two separate lines: 1) cabin trim line, 2) chassis assembly line. This project only focuses on the balance level in the cab trim line.Figure 3.2: Main departments of “Model MF” truck productions.3.2.1 Process flow and layout of the cab trim lineThe following figure shows the detailed processes of the cabin trim line of 'Model MF'. The layout designed for this line is the type of inline layout for a single model. The total labor used to assemble the parts and complete the work items at the workstation is 10. This project does not take into account other labor and processes other than in T1 to T9, inspections or subassemblies. Subassemblies are produced offline to reduce total working time on the cabin trim assembly line..