PPPs require clear and transparent procurement measures, and independent experts who can appraise the value and quality of bids. And, because PPP contracts are complex, managing PPP agreements requires a high level of expertise. Poorly defined project terms or an unqualified private partner can prolong negotiations before a contract award can be made or result in no agreement being reached. A case in point is the Hwado-Yangpyeong Expressway Project, which failed to reach final agreement after 8 months of negotiations because of concerns over the financial soundness of the private partner even though this party was selected as the preferred bidder. The lesson here is that the right criteria must be used to select a preferred bidder in a trustworthy procurement system. Assistance to build the capabilities to do this can be provided by legal and accounting professionals in the private sector or from multilateral development banks.