Public Private Partnerships Renegotiations in Transportation: Case Studies from Portugal

There is a growing interest in Public-Private Partnerships (PPPs), particularly in infrastructure and public services. Under the scope of PPPs, renegotiations are becoming more relevant, as empirical evidence suggests that most PPP projects are inevitably renegotiated, i.e., the original contract needs to be adapted to new and unforeseen circumstances. Renegotiations have a substantial impact on the contract and performance of a PPP and usually represent significant costs for users and taxp...