The great majority of analyses made in transport economics use, explicitly or, more often, implicitly, the common assumption of perfect competition. This is the case, for instance, when infrastructure projects are evaluated using the mere sum of the surpluses of transport users and providers....

Public authorities can make a wide variety of institutional arrangements for the provision and operation of infrastructure. What is the best organisation or, to put it more pragmatically, what are the advantages and drawbacks of the various options This is the question that the present chapter...

The Public-Private-Partnership (PPP) procedure is a very appealing model, but as it becomes more and more used in practice, problems and failures have been observed in the management of many projects. Many of these unfortunate experiences are consequences of errors in the implementation of the...