Abstract—Indonesian people use trains for their transportation, especially they use economy class train transportation because it is cheaper and has a more precise schedule than any other ground transportation. Nevertheless, the economy class passenger seat raises some inconvenience issues for passengers. This is due to the design of the chair on the economic class of trains that did not adjusted to the shape of anthropometry of Indonesian people. Thus, research needs to be conducted on the design of the seats in the economic class of trains. The purpose of this research is to make the design of economy class passenger seats ergonomic. This research method uses questionnaires and anthropometry measurements. The data obtained is processed using House of Quality of Ergonomic Function Development. From the results of analysis and data processing were obtained important changes from the original design. Ergonomic chair design according to the analysis is a stainless steel frame, seat height 390 mm, with a seat width for each passenger of 400 mm and a depth of 400 mm. Design of the backrest has a height of 840 mm, width of 430 mm and length of 300 mm that can move at the angle of 105-115 degrees. The width of the footrest is 42 mm and 400 mm length. The thickness of the seat cushion is 100 mm. Keywords—Chair, ergonomics, function development, train passenger. I. INTRODUCTION OME Indonesians use rail transport by train as their favorite transportation. The advantage when using the train as transport in Indonesia is that it is more economical than using other forms of ground transportation. Law no. 13/1992 of the Republic of Indonesia on railways describes the advantages of the national railway transportation system as an economic, energy saving, safe and environmentally- friendly mass transportation. The national railway system is expected to be a supporter and driver of national development for the improvement of people's welfare so that every railway support facility is made to provide convenience and comfort for railway users. The comfort factor of take the train is an essential factor for passengers because an uncomfortable train journey can cause excessive fatigue. The passenger seat is one cause of discomfort, when the design is not in accordance with the anthropometry of the user’s body (not ergonomic). Creating an ergonomic seating design will provide a sense of comfort and can reduce fatigue Wibowo, Robertoes K. K. is Lecturer of Mechanical Engineering Department, Engineering Faculty, Jember University, Indonesia (e-mail: koekoeh@unej.ac.id). Siswoyo Soekarno is Lecturer of Technology of Agricultural Engineering, Agricultural Engineering Faculty, Jember University, Indonesia. Irma Puspitasari is Student of Mechanical Engineering Department, Engineering Faculty, Jember University, Indonesia. for those seated. If the principle of ergonomics is applied in designing a passenger seat, then it will also provide the same benefits that can provide comfort and can reduce fatigue for passengers who sit on it [1]. As one of the largest railway manufacturers in Indonesia, PT Industri Kereta Api (INKA) should pay attention to the quality of each product it produces, one of which is the ergonomically designed railway passenger seat. Most quality experts now agree that the quality of a good product is that it can meet the needs and desires of consumers [2]. Currently, economic class train seats have a rigid shape that is less supportive of passenger posture when sitting, lacking armrests, with a too narrow distance of only about 10 cm between the feet of passengers facing each other. In designing a comfortable passenger seat, it is necessary to determine the seat size in accordance with the anthropometry of passengers. By making the size of the seat in accordance with the anthropometry of the seat users then the factors that cause discomfort and fatigue for passenger can be reduced so that passengers do not feel excessively tired when sitting in the chair for an extended time [3]. An ergonomic approach in the design of the passenger seat is a challenge for the chair designer, due to the difficulties of formulating the comfort values for sitting of passengers and because the attitude of sitting is grouped as a dynamic activity in the understanding of ergonomics. In designing a comfortable passenger seat, it is necessary to determine the seat size in accordance with the anthropometry of passengers. The design and manufacture of passenger seating must be based on the anthropometry data of users, otherwise, the final product may cause discomfort for users [4]. The method used in ergonomic train passenger seat research is the Ergonomic Function Deployment (EFD). EFD is a method to facilitate designers during the design process, because the decision is "recorded" in the form of matrices to be examined and then modified [1]. Problem statements 1. There is no technical reference on the design dimensions of the ergonomic train seat, so it is necessary to draw the dimensions of the design of the economy class of train passenger seats. 2. For the convenience of train passengers, the anthropometric of passengers should be in accordance with the dimensions of the seat. The objectives of the research are to identify the design dimensions of existing economic train passenger seats, to determine the suitability of the current economy class train Robertoes K. K. Wibowo, Siswoyo Soekarno, Irma Puspitasari Analysis of Train Passenger Seat Using Ergonomic Function Deployment Method S World Academy of Science, Engineering and Technology International Journal of Transport and Vehicle Engineering Vol:11, No:10, 2017 1735 International Scholarly and Scientific Research & Innovation 11(10) 2017 scholar.waset.org/1307-6892/10008176 International Science Index, Transport and Vehicle Engineering Vol:11, No:10, 2017 waset.org/Publication/10008176