The new building covers an area of around 3,400 square meters, and acts as the "eye" overlooking the entire PRASA network. The control room at the heart of the GNC is equipped with a video wall over 52 meters long and two meters high, monitoring all train movements and displaying traction power supply, weather information and operational data. The train movements are controlled via 30 multiscreen workstations, which are each fitted with an integrated communication module, combining telephone, trunked radio and GSMR communication. The GNC also includes the centralized control of passenger information systems, monitoring equipment for the overhead contact line systems and CCTV systems for the stations.
The signaling systems currently in use in the province of Gauteng are obsolete. They comprise a mix of technologies, with some dating back to the 1930s. Upgrading the trackside equipment will help develop the densely populated province of Gauteng as an economic region, as the advanced track systems are designed to reduce the headway between successive trains from 15 minutes to around 2.5 minutes, thus increasing operating capacity and ensuring greater flexibility, a higher level of safety and fewer train delays. Siemens is upgrading one quarter of the obsolete signaling systems in Gauteng for completion in 2017. The follow-up order awarded in 2013 is to replace the remaining three-quarters of the trackside signaling systems. Three of the total 92 stations to be modernized are now up and running with Siemens interlocking technology.
Covering an area of 18,000 square kilometers, Gauteng (twelve million inhabitants) is the smallest but most densely populated province in South Africa. With the cities of Johannesburg and Pretoria, it forms the economic center of the South Africa. It is responsible for generating around ten percent of Africa's total GDP. To strengthen Gauteng's position as an industry and trade hub, PRASA, the state-owned rail operator, is investing heavily in locomotives and rail cars and in the expansion of railway infrastructure.