Between 2014 and 2015, UNOPS supported the Supervisory Body for Investment in Public Transport Infrastructure of Peru (OSITRAN) with 13 tender processes, including contracts for the supervision of port, airport, train and highway concessions. This included supervision of Line 2 of the Lima metro system, which involved a government investment in construction and operation of US$5.3 billion. Other important supervisions have been the expansion of the Jorge Chávez International Airport in Lima, with public investment of US$900 million, and supervision of the new Chinchero International Airport in Cusco, with construction valued at US$600 million. 

UNOPS works on defining the terms of reference for the supervisory services, and on the selection of the companies that will provide them. Improvements to the terms of reference for the services required by OSITRAN means greater clarity in the responsibilities of the different parties, as well as savings on potential legal problems that may arise. The increase in responsibility for performing this type of service has led to the awarding of such important service contracts to a new type of company: top-level local companies that are often partners of international firms, which together offer the capacity to provide the service requested.