Amin Nejati - Department of Civil Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
Mehdi Ravanshadnia - Associate Professor, Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
Ehsan Sadeh - Assistant Professor, Department of Management, Saveh Branch, Islamic Azad University, Saveh, Iran

A gigantic evolution has been brought about in the railway transportation by the emergence of the expressways as the mostefficient method of carrying passengers within short and medium interurban distances. Various types of expresswaypavements have been offered during the recent years. A considerable amount of the repair and maintenance costs in railroadsector is allocated to the constituents forming the pavements. No thorough and precise research has been so far conductedon the railroad expressways featuring traffics with speeds over 250 km/h and the extant information have merely beentrivial changes in the procedures existent for speeds below 200 km/h and these are not deemed of much use and applicability.Thus, the current research paper is devoted to the investigation and selection of express railways pavement system designusing VIKOR method. The evaluations indicate that the commencement of the first high-speed train work in 1964 in Japanmarked a turning point in the railroad passenger transportation in the world. The development of the high-speed railwaytransportation is enumerated as an important revolution helping the railroads retake their crucial role in passengertransportation in such a way that it is found overtaking the roadway and aerial transportation and even exposing someairlines to real crisis. The high-speed railroad is undergoing an intensive expansion worldwide and as a safe, sound andsustainable transportation system, it has well proved its role in the social and economic development of the nations.

Railroad; Express Train; Fuzzy Logic; VIKOR Method