It allows rail circulation to be supervised and monitored. Its different levels of application are as follows:

Automatic Train Operation system (ATO)

This system operates with the support of the Train-stop and Cesares systems. Its function is the automatic control that takes a train from one station to anther. The system records information on the speed and route as well as beacons in order to organise travel from one stop to the next in the optimum fashion. This system is installed on lines 2 and 5 and is being introduced on lines 1 and 3.

Traffic Regulation System (RDT)

This system uses the previous systems to obtain regularity in the frequency with which trains pass, determined either by timetables or intervals, depending on the operational circumstances. This system optimises the transport capacity, unifies passenger-waiting times at any point along the line and saves energy on the bands. This system is installed on lines 1, 3 and 4.

The SIRO (Optimal Regulation System)

The SIRO has been installed on lines 2 and 5. It sends instructions from the network through the ATO without requiring the assistance of the machine operator.