fa Railway track and structures Railway track and structures پژوهشي Research Iran&rsquo;s geographical situation, in particular long-distance routes, makes rail transportation to<br> be more attractive and important than the other modes. Since transport cost is the main<br> concern for local and national authorities, Hub location is an important problem in transport<br> planning in which transport industries are looking for selected points to change trains for<br> passengers. In this paper, a mathematical model for solving hub location problem has been<br> developed and validated on Iranian rail network. Passenger supplies and demand from origin<br> to destination nodes are estimated using the well-known model of Gravity as well as the<br> shortest path algorithm has been also utilized for route assignment. Running the proposed<br> model by GAMS revealed that choosing hubs can significantly reduce transport cost and<br> enhance rail productivity along the rail network. Rail Transportation, Hub Location Problem, Trip Distribution, Mathematical Programming 61 70 http://ijrare.iust.ac.ir/browse.php?a_code=A-10-155-2&slc_lang=fa&sid=1 Abbas Mahmoudabadi mahmoudabadi@mehrastan.ac.ir 180031947532846001425 180031947532846001425 Yes Industrial Engineering Department, MehrAstan University, Guilan, Iran Industrial Engineering Department, MehrAstan University, Guilan, Iran Yasaman Lotfizadeh Jad 180031947532846001426 180031947532846001426 No Kharazmi University, Tehran, Iran Kharazmi University, Tehran, Iran