Rio de Janeiro, in Brasil, is among the busiest cities in the world. The critical issues are mainly caused by the many cars that fill the city streets each day: according to the BBC, in the last 10 years the number of cars has increased by over 40%. To solve the problem, the local administration made the decision to improve urban transport.

We created the telecommunications infrastructure of the entire underground line (with over 12 km and seven stations) and a central control centre, including also: the data network, TETRA system, the SCADA control system, service and emergency phone, information panels, the sound system, the CCTV video surveillance system, access control and ticketing services. The data network, on which all the other systems depended, was first created; subsequently, and in parallel, we have integrated all the components, using the latest technologies for the monitoring and control of underground transport systems. During the installation and testing phases, we created a simulation platform that analysed a sample of system components. All this, to prevent any errors, unexpected behaviour or integration problems.