fa Railway track and structures Railway track and structures پژوهشي Research In railway stations, an appropriate facility planning and layout design leads to enhance efficiency and passenger satisfaction. The present study provided a methodology to design facility layout by integrating simulation and optimization for passengers in public location, as well as proposing an innovative model to allocate candidate location to the facility. The proposed model results in the selection of the location for the facility with any dimension and without space limitation. Furthermore, it is usable for passenger’s terminal and all public locations. The advantages of the proposed model are reducing some parameters such as the movement duration of passengers, experienced passenger density, and flow rate, and increasing the quality of passenger terminals. Railway station, Facility layout, Simulation and optimization, Passenger satisfaction 51 59 http://ijrare.iust.ac.ir/browse.php?a_code=A-10-95-7&slc_lang=fa&sid=1 Seyed Mohsen Mahmoudi 180031947532846002052 180031947532846002052 No School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran Morteza Bagheri 180031947532846002053 180031947532846002053 Yes School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran School of Railway Engineering, Iran University of Science & Technology, Tehran, Iran Navid Khademi 180031947532846002054 180031947532846002054 No School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran Afshin Shariat Mohaymany 180031947532846002055 180031947532846002055 No School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran