Page 324 - IRSEM_Main Book

13.2.2 ETCS Level 0

(a) Level 0 applies when an ATP-fitted vehicle is used on a non-ATP route.
The train borne equipment only supervises the maximum speed of that type
of train in unfitted areas.

(b) In Level 0 it is authorized to operate trains without any train control system
and therefore line side fixed signals are to be followed by Loco Pilot.

(c) Train detection and train integrity supervision are performed by the
trackside equipment of the underlying signalling system (interlocking, track
circuits etc.).

(d) Level 0 uses no track-train transmission except balises to command level
transitions. Balises therefore still have to be read.

(e) No supervisory information is indicated on the DMI except the train speed.
Train data has to be entered in order not to have to stop a train at a level
transition to ATP equipped area and to supervise maximum train speed in
unfitted areas.

13.2.3 ETCS Level 1

(a) Level 1 is a spot transmission system to be used as an overlay on an
underlying signalling system. Trackside signals are required in Level 1
application. Train Protection Warning System (TPWS) is equivalent to Level 1.

(b) Track side equipment of Level 1 comprises of

(i) Balises

(ii) Line side Electronic Unit (LEU)
(iii) Communication link (data cable) between the LEU & the balise

(iv) On-board equipment of Level 1 comprises of:
 On-board Vital Computer (OBC)

 Data logger for diagnostics (either part of OBC or separate)
 Driver Machine Interface (DMI), indications & and non-resettable
counters
 Balise Transmission Module (BTM)

 Balise antenna fixed to the under frame
 Speed Sensors such as Pulse Generators, Accelerometers, Radar etc.

 Train Interface Unit (TIU)
 Interface to existing brake control system which in turn controls
application of service/emergency brakes or interface to existing brake
system directly
 Power supply arrangement

 Suitable isolation arrangement for isolating the system

Chapter 13: ATP, ETCS, IRATP (TCAS) & TMS Page 278 of 535