The literature review was designed to locate U.S. and international experience related to concerns about how the public interest was protected in PPP transactions and how these concerns were addressed by decision makers, project sponsors, and other stakeholders. The literature review included documents suggested by the review panel, in addition to papers and studies previously compiled by the authors. Some of the information sources reviewed included:
• A Cambridge Systematics's report on long-term lease agreements and public concerns prepared for the University of Southern California, Keston Institute;
• Studies by states, regions, and toll road authorities investigating PPP options;
• U.S. House of Representatives-Testimonies on PPPs before the House Transportation and Infrastructure Committee;
• Several GAO studies, including a recent report about protecting the public interest in PPPs;
• FHWA:
- PPP website;
- International Scan Report on Asset Management;
- PPP User Guidebook and Case Studies; and
- PPP legislation survey prepared by Nossaman, Guthner, Knox & Elliot, LLP.
• Publications from the Organization for Economic Cooperation and Development (OECD), the European Union, and the World Bank;
• TRB papers presented at its annual meetings in recent years;
• Academic and industry papers;
• Books on PPPs: Nuevos Sistemas de Gestión y Financiación de Infratructuras de Transporte (New Systems of Management and Financing for Transportation Infrastructure), by Izquierdo and Vassallo (2004); and
• Newspapers and Internet newsletters/blogs on PPPs and toll roads.