Cities exist, grow, and prosper because they take advantage of scale economies and specialization wrought by agglomeration. But output growth inevitably stresses transport infrastructure because production requires space and mobility. To prevent congestion from crowding out agglomeration...

Public-private partnerships (PPPs) are increasingly used to provide infrastructure services. Even though PPPs have the potential to increase efficiency and improve resource allocation, contract renegotiations have been pervasive. We show that existing accounting standards allow governments to...

Este trabajo describe en forma sistemática los montos renegociados en las 50 concesiones cuyos datos han sido publicados por el MOP en su página web. Nuestra principal conclusión es que las renegociaciones son frecuentes y que involucran montos considerables. En promedio, cada concesión ha...