In the State of Mexico, the Ministry of Communications (through the department in charge of roads) always issues an opinion on the feasibility of incorporating road and pedestrian flows generated by developments in the existing road infrastructure. A positive opinion is required for the State Commission of Urban Development and Housing (which includes representatives of various ministries including the Ministry of Communications) to issue a proof of viability. This document is needed in turn for the Ministry of Urban and Metropolitan Development to grant construction authorisations.