A bus network for a city of 2 million people, consisting of 2000 vehicles and 200 roaming inspectors is being supported by 5 city centre radio sites, monitored by 10 control rooms.

The buses utilise the network data capability to operate vehicle location systems bases on the fare stages. The control room also receives data from the ticket machines showing ticket sales as well as money received.

Dispatcher terminals process short data messages (SDM) requesting speech calls with the driver. An emergency foot switch connects the vehicle via a live Microphone directly to the control room where the situation may be monitored.