Abstract.Large transportation projects such as highways are expensive, complex, and dynamic in nature. Acquiring large investment capitals for these projects is always a major challenge for every nation. To solve this problem, Vietnamese government has called for the participation of private entities in the form of publicprivate partnership (PPP). Attracting private investors is a vital and challenging step for implementing PPP transportation projects in Vietnam. This paper examines the similarities and differences of risk perceptions of the public and private sectors for the investment of PPP transportation projects in Vietnam. Questionnaire surveys are used to collect data for assessing the likelihoods of occurrence and impacts of risk factors from 123 experienced professionals from both public and private entities. We found that the two most critical risk factors (CRFs) are land acquisition and compensation, and delay in project approvals and permits. The results from an independent sample t-test indicate the different risk perceptions of the public and private sectors for eight CRFs: (1) corruption, (2) change of project scope, (3) lack of transparency in bidding, (4) inflation, (5) payment issues, (6) inadequate feasibility study, (7) inappropriate allocation of responsibility and risk, and (8) fluctuation of interest rate. These eight CRFs are categorized into three major groups: the tendering process, commercial problems, and payment issues. These results can be used for establishing appropriate public policies to promote private investments in PPP transportation projects. Meanwhile, private investors would also have a better understanding of PPP transportation project development in Vietnam.
Infrastructure projects require a great amount of capital investment resulting from their tremendous size, complexity, and risk. Due to the limitation of public finances, the private sector is invited to participate in infrastructure project development. The private sector can entirely or partially invest in an infrastructure project in the form of a public-private partnership (PPP) scheme, which has been an attractive option for several developing countries, including Vietnam. Unfortunately, despite the PPP scheme will improve project efficiencies and attract capital investments of private investors, the success of PPP implementation is not guaranteed. This paper investigates the critical success factors (CSFs) of PPP infrastructure projects in Vietnam. Relevant data were collected through in-depth interviews with six PPP experts and questionnaire surveys with 150 interviewees and then analyzed by the word cloud technique and the one-way analysis of variance (ANOVA) test. The CSFs were ranked based on the viewpoints of the public sector, the private sector, and the PPP consultants. The outcomes show that there was no significant difference in the perceptions of all three parties concerning the success factors for PPP infrastructure projects in Vietnam. The top five critical success factors are (1) timely land acquisition and appropriate compensation, (2) financial capacity of the private sector, (3) effective project management, (4) favorable and complete legal framework and regulations, and (5) financial feasibility and attraction. Recognizing the CSFs is indispensable to ensure the success of PPP infrastructure project implementation.
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