عنوان مقاله [English]
Since their establishment, governments have been the main suppliers of resources for infrastructure projects, and provide a major source of tax revenue and revenue from national resources. On the one hand, there is a need to implement infrastructure projects in developing countries and increase national welfare, and on the other hand the external debt of Third World countries and the stress state budgets are rising. Further development of the private sector and emphasis on the privatization of government agencies in the 70s and 80s, created new ways to finance infrastructure projects, as an alternative to the use of public funds or borrowing from foreign sources. This resulted in the formation and development of various forms of public-private partnership, one of which is Kian. Also, the shortage of government resources and the extreme need to fund national development have required governments to absorb private sectors in the foundational projects of their countries. BOT can be considered a reliable way of absorbing private assets, which retains the governments strategic control over establishments. Despite all its positive characteristics, however, this method has not reached its goals. Numerous instances can be found where BOT projects have not reached a desirable conclusion. Failure of such projects imposes heavy financial and social expenses on all the contract parties, especially the host country, and this is why governments and private companies seek a structure that can support such projects towards successful achievement of their goals. The basic goal of each BOT project is to make a structure of risk management which can ensure the success of the project. In this article, according to related past events and large numbers of field studies by specialists to gain statistical information, an attempt has been made to study the risk rate and lack of surety in Irans freeway BOT projects using SPSS software.