Automatic blockage system

This refers to a system used to regulate and guarantee a safe distance between trains and to complete itineraries. It is in place all on the general tracks in the network.

Automatic train-protection system (ATP)

This system automatically stops trains in circulation from passing signals or reaching unsafe speeds.

Train-stop

This system automatically brakes any train that passes a stop signal. It works by allowing communication between points on the track (beacons) and the train. This system is currently installed on line 4 only.

Cesares System (centralisation of anti-signal passing system)

This system sets off the brakes in any train that passes a stop signal and associates station systems with particular points on the tracks. It works by allowing a track element (beacon) to communicate with the train, and in this case provides centralised supervision of all the beacons. It also allows for the automatic localisation from the train of the existence and position of beacons and, as there are complementary speed beacons installed at particular points along the route, it stops the train from either exceeding the maximum established speed or from stopping. This system is currently installed on lines 1, 3 and 5 and is being introduced on line 2