[pt] A partir da década de 90 houve um aumento da participação do setor privado em projetos de infra-estrutura no Brasil. Esta participação deu-se principalmente por meio de concessões tradicionais regidas pela Lei das Concessões. Contudo, para tornar economicamente viáveis projetos de baixa atratividade para o setor privado devido ao seu alto risco, o governo brasileiro passou a analisar formas de redução destes riscos, como as Parcerias Público- Privadas (PPPs), incluindo a flexibilização do prazo de concessão, garantias de tráfego, de risco cambial ou até mesmo garantias de financiamento. Neste trabalho é utilizado o modelo LPVR (Menor Valor Presente das Receitas) de prazo de concessão variável aliado a uma garantia de tráfego mínimo para a avaliação do caso do projeto da rodovia BR-116/324 através da metodologia das Opções Reais. Os resultados indicam que o uso deste modelo permite uma redução dos riscos tanto para o Governo, pela limitação de ganhos excessivos da concessionária, quanto para o investidor privado, pela flexibilidade do prazo e garantia de tráfego concedida. Concluímos que o modelo LPVR associado a uma garantia de tráfego mínimo de 80% aumenta em média o VPL do projeto em mais de 60%. Embora esta garantia represente um custo adicional para o Governo, ela é compensada pelo aumento da atratividade do investimento para o setor privado. / [en] Since the 90`s, there has been an increasing participation of the private sector in infrastructure projects in Brazil. This participation, however, took place mainly through traditional concessions, governed by the Concessions Law. However, to become economically viable projects that would not have attractiveness to the private sector due to its high risks, Brazilian government started to analyze some ways to reduce these risks such as the Public Private Partnerships (PPPs), including the term flexibility, traffic guarantee, guarantee of foreign currency risk or even assurance of funding. In this project it`s used the LPVR model (Least Present Value of Revenue) with variable period concession, ally to a minimum traffic guarantee and applying the case to the BR-116/324 highway project through the Real Options Methodology. The results show that the use of this model allows a reduction on the risks both for the government, avoiding excessive gains by the concessionaire, and for the private investor, either for the term flexibility or the guarantee of the traffic granted. So, we can conclude that the LPVR model associated with a minimum traffic guarantee of 80%, increases the VPL in an average of 60%, although this guarantee represents a further cost to the government which is compensated by the increasing attractiveness of the investment to the private sector.

[pt] Investimentos de caráter privado se apresentam como importante vetor para o financiamento de projetos de infra-estrutura pública. Governos ao redor do globo têm fomentado a participação da iniciativa privada nestes investimentos através da modelagem de projetos com base em project finance e na utilização de mecanismos de PPP (Parcerias Público-Privadas). Em projetos de PPP, estes instrumentos são arranjos contratuais no qual o governo assume compromissos futuros através de garantias e opções e vêm sendo utilizados na busca por uma alocação eficiente de riscos e recursos. Neste sentido, o setor de transporte se apresenta como um grande campo de aplicação destes mecanismos, em especial no que se refere às concessões rodoviárias. Um importante fator de risco em projetos desta natureza está associado ao volume de tráfego, que frequentemente apresenta impacto direto na viabilidade do empreendimento. Por esta razão, diferentes modelos de garantias que objetivam reduzir o risco do investidor privado e alocar de forma eficiente os recursos públicos têm sido apresentados. Este trabalho apresenta uma proposta para a viabilização de concessões rodoviárias. Para tanto, o trabalho apresenta o estudo de caso da MG-050, o primeira PPP na área de infra-estrutura rodoviária implementada no país. Adicionalmente, apresenta-se a sugestão de modelagem de garantias governamentais com base na metodologia de Opções Reais, sob a forma de uma garantia de tráfego mínimo para do projeto em questão. Conclui-se que a metodologia com base em opções reais contribui de forma a tornar o projeto viável à participação da iniciativa privada, oferecendo um menor custo para a obtenção deste objetivo. / [en] Private investments are an important instrument for funding public infrastructure projects. Governments around the globe have been developing incentives for the participation of private investments in these types of projects by using instruments such as PPP (Public Private Partnership) and project finance. PPP instruments are contracts in which the Government agrees to provide future guarantees or options, and are used in order to efficiently allocate risks and resources. Accordingly, the transportation sector is a vast field for the use of these instruments. An important risk factor associated with such projects is the volume of traffic, which directly impacts the feasibility of the venture. This dissertation presents a proposal for making projects feasible, and analyses the MG-050 Toll Road case, the first PPP in infrastructure in Brazil. Additionally, this work proposes the modeling of a minimum traffic guarantee through a Real Option approach. The conclusion is that the Real Option Theory contributes positively for the feasibility of the project and reduces the payments made by the public sector.

Build-Operate-Transfer (BOT) is a form of Public-Private Partnerships that is commonly used to close the growing gap between the cost of developing and modernizing transportation infrastructure systems and the financial resources available to governments. When assessing the feasibility of a BOT project, private investors consider revenue risk - which is stemmed from the uncertainty about future traffic demand - as a critical factor. A potential approach to mitigating the revenue risk is the offering of revenue risk sharing mechanisms such as Minimum Revenue Guarantee options by the government. In addition to Minimum Revenue Guarantee options, a mechanism known as Traffic Revenue Cap options may also be negotiated, which makes the government entitled to a share of revenue when it grows beyond a specified threshold. Financial valuation of investments in BOT projects should take into account uncertainty about future traffic demand, as well as Minimum Revenue Guarantee and Traffic Revenue Cap options. The conventional valuation methods including Net Present Value (NPV) analysis are not capable of integrating the uncertainty about future traffic demand in the valuation of BOT projects and properly pricing Minimum Revenue Guarantee and Traffic Revenue Cap options. Real options analysis can be used as an alternative approach to valuation of investments in transportation projects under uncertainties. However, the appropriate application of real options analysis to valuation of investments in transportation projects is conditioned upon overcoming specific theoretical challenges. Current real options models do not provide a systematic method for estimating the project volatility, which measures the variability of investment value. Existing models do not provide a method for calculating the market value of Minimum Revenue Guarantee and Traffic Revenue Cap options. Also, current models are not able to characterize the impact of Minimum Revenue Guarantee and Traffic Revenue Cap options on private investors' financial risk profile. The overarching objective of this research is to apply the real options theory in order to price Minimum Revenue Guarantee and Traffic Revenue Cap options under the uncertainty about future traffic demand. To achieve this objective, a real options model is created that characterizes the long-term traffic demand uncertainty in BOT projects and determines investors' financial risk profile under uncertainty about future traffic demand. This model presents a novel method for estimating the project volatility for real options analysis. This model devises a market-based option pricing approach to determine the correct value of Minimum Revenue Guarantee and Traffic Revenue Cap options. An appropriate procedure is created for characterizing the impact of Minimum Revenue Guarantee and Traffic Revenue Cap options on the investors' financial risk profile. The proposed real options model is applied to a BOT project to illustrate the valuation process. The limitations of the proposed real options model, as well as the barriers to its implementation, are identified and recommendations for future research are offered. This research contributes to the state of knowledge by presenting a new method for estimating the project volatility, which is required for the real options analysis of transportation investments. It also introduces a risk-neutral valuation method for pricing the market value of Minimum Revenue Guarantee and Traffic Revenue Cap options in BOT projects. The research also contributes to the state of practice by introducing a novel class of assessment tools for decision makers that characterize the investors' financial risk profile under uncertainty about future traffic demand. Proper methods for pricing of Minimum Revenue Guarantee and Traffic Revenue Cap options are useful to public and private investors, in order to avoid wasting capital in transportation projects.