Page 329 - IRSEM_Main Book

(i) The radio block centre which provides the information to the trains shall know
each ATP controlled train individually by the unique identity of its leading
ATP on-board equipment.

(j) The movement authority is transmitted to the vehicle continuously via
GSM-R/LTE radio along with track description data.

(k) The balises act as reference points and are used only to correct the
accumulated odometry error. Between two balises, the train determines its
position via speed sensors (Pulse Generators, accelerometer, radar).

(l) The on-board computer continuously compares the train speed with the
Permitted speed and commands the brake application, if necessary. Line
side signals can be suppressed in Level 2.

(m) Level-2 shall accommodate regenerative braking (optional). It shall have
two levels of brake commands:

(i) Service brake command.

(ii) Emergency brake command.

13.2.6 Level 3 (Reserved for future)

13.2.7 Driver Machine Interface for ETCS

(a) The Driver Machine Interface shall be applicable for all the levels. A typical
overall view of the main window of the DMI during the start of the mission
(i.e., start of travel) is shown below:

Chapter 13: ATP, ETCS, IRATP (TCAS) & TMS Page 283 of 535