In this project, the private investors have the right to build and operate the infrastructure works are often made by the Government. This investor is also responsible for the funding, design projects and at the end of the period of the contract, the delivery of public works for the State. The period of this privilege is mainly determined by the length of time necessary to revenue from the work to pay off the debt of the business and created a lucrative rates reasonable for the investment and the risk that business that suffered fa.
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