# Entering and operating in a level (LTR)

## LTR.LEVLevels (LEV)

### LTR.LEV.L0Running in Level 0 (L0)

LTR.LEV.L0-[L0].1Level 0 is used to run ETCS equipped trains on lines with ETCS or national systems or on lines where trackside ETCS infrastructure and/or national systems may exist but the operation under their supervision is currently not possible.

In level 0, the driver receives movement authorities from the line side optical signals or other means of signaling. The train operates without any train control system.

The ETCS on-board equipment only provides supervision of the maximum design speed of the train and maximum speed permitted.

The only supervisory information indicated on the DMI is the train speed.

Train data has to be entered in level 0 to prevent the train having to stop at a level transition to an ETCS equipped area.

LTR.LEV.L0-[L0.N].1When the train is running in level 0, the Level 0 symbol (LE01, located in area C8) is displayed on the DMI. The driver shall apply non-harmonised rules.

LE01: Level 0

LTR.LEV.L0-[L0.T].1The DMI appearance when the UN mode is active is included in Figure LTR.LEV.L0-[L0.T].F1:

Figure LTR.LEV.L0-[L0.T].F1: Train in level 0 (touch screen technology)

LTR.LEV.L0-[L0.S].1The DMI appearance when the UN mode is active is included in Figure LTR.LEV.L0-[L0.S].F1:

Figure LTR.LEV.L0-[L0.S].F1: Train in level 0 (soft key technology)

### LTR.LEV.NTCRunning in Level NTC (NTC)

LTR.LEV.NTC-[LN].1Level NTC is used to run ETCS equipped trains on lines with national train control and speed supervision systems.

In level NTC, the lineside optical signals may be necessary, depending on the performance and functionality of the underlying national signalling system.

The information displayed to the driver on the DMI depends on the functionality of the underlying national system.

Train data has to be entered in level NTC to prevent the train having to stop at a level transition.

LTR.LEV.NTC-[LN.N].1When the train is running in Level NTC, the Level NTC symbol (LE02, in level NTC, the location is not specified) is displayed on the DMI. The driver shall apply non-harmonised rules. The LE02 symbol used depends on the national system.

LE02: Level NTC

### LTR.LEV.L1Running in Level 1 (L1)

LTR.LEV.L1-[L1].1Level 1 is a spot transmission based train control system to be used as an overlay to an underlying signalling system.

It provides continuous speed supervision, which also protects against the overrun of the authority.

Lineside signals are required in level 1 applications, except if semi-continuous infill is provided.

If in level 1 a lineside signal clears, an approaching train cannot receive this information until it passes the Eurobalise group at that signal. The driver therefore has to observe the lineside signal to know when to proceed. The train has then to be permitted to approach the stopping location below a maximum permitted release speed.

LTR.LEV.L1-[L1].2When the train is running in Level 1, the Level 1 symbol (LE03, located in area C8) is displayed on the DMI. The driver shall then apply rules according to level 1.

LE03: Level 1

### LTR.LEV.L2Running in Level 2 (L2)

LTR.LEV.L2-[L2].1Level 2 is a radio based train control system which is used as an overlay to an underlying signalling system.

It provides continuous speed supervision, which also protects against the overrun of the authority.

LTR.LEV.L2-[L2].2When the train is running in Level 2, the Level 2 symbol (LE04, located in area C8) is displayed on the DMI. The driver shall then apply rules according to level 2.

LE04: Level 2

When requested by the signaller to manually confirm train integrity on the DMI, the driver shall do so only at standstill and according to RU rules.

### LTR.LEV.L3Running in Level 3 (L3)

LTR.LEV.L3-[L3].1Level 3 is a radio based train control system.

It provides continuous speed supervision, which also protects against the overrun of the authority.

Lineside signals are not required in level 3.

LTR.LEV.L3-[L3].2When the train is running in Level 3, the Level 3 symbol (LE05, located in area C8) is displayed on the DMI. The driver shall then apply rules according to level 3.

LE05: Level 3

## LTR.TRSLevel transitions (TRS)

LTR.TRS.1Level transitions can be ordered either by the trackside or initiated by the driver as explicated in the following sections.

When the level transition is ordered by the trackside, the driver receives a level transition announcement and if it is a transition from/to level NTC and from level 0, the driver is required to acknowledge the level transition.

In NL mode, the acknowledgement is not required.

If the driver does not acknowledge when required the level transition within the driver acknowledgement time of 5 seconds, the service brake is triggered. The service brake is released when the driver acknowledges the level transition.

LTR.TRS-[N].1Even when none of the level (s) ordered by the trackside is available for use by the ETCS on-board equipment, the transition is triggered. The driver shall follow the appropriate procedure for the degraded situation.

### LTR.TRS.TL0Level transition to level 0 ordered by trackside (TL0)

LTR.TRS.TL0-[T0.N].1When the train approaches a level 0 area and the Level 0 announcement symbol (LE06, located in area C1, except when running in level NTC, in which case the location is not specified) is displayed on the DMI, the driver shall apply non-harmonised rules.

LE06: Level 0 announcement

LTR.TRS.TL0-[LN1.T0.T].1When the Level 0 acknowledgement symbol (LE07) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level 0 by pressing the Level 0 acknowledgement symbol as indicated in the Figure LTR.TRS.TL0-[LN1.T0.T].F1.

Figure LTR.TRS.TL0-[LN1.T0.T].F1: Level 0 to be acknowledged (touch screen technology)

LTR.TRS.TL0-[L2.T0.T].1 When the Level 0 acknowledgement symbol (LE07) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level 0 by pressing the Level 0 acknowledgement symbol as indicated in the Figure LTR.TRS.TL0-[L2.T0.T].F1.

Figure LTR.TRS.TL0-[L2.T0.T].F1: Level 0 to be acknowledged (touch screen technology)

LTR.TRS.TL0-[LN1.T0.S].1When the Level 0 acknowledgement symbol (LE07) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level 0 by pressing the button associated to the Level 0 acknowledgement symbol as indicated in the Figure LTR.TRS.TL0-[LN1.T0.S].F1.

Figure LTR.TRS.TL0-[LN1.T0.S].F1: Level 0 to be acknowledged (soft key technology)

LTR.TRS.TL0-[L2.T0.S].1When the Level 0 acknowledgement symbol (LE07) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level 0 by pressing the button associated to the Level 0 acknowledgement symbol as indicated in the Figure LTR.TRS.TL0-[L2.T0.S].F1.

Figure LTR.TRS.TL0-[L2.T0.S].F1: Level 0 to be acknowledged (soft key technology)

LTR.TRS.TL0-[LN.T0].1 The driver is responsible for not exceeding the maximum speed of the level NTC line, when entering a level 0 area from a level NTC area.

### LTR.TRS.NTCLevel transition to level NTC ordered by trackside (NTC)

LTR.TRS.NTC-[TN.N].1When the train approaches a level NTC area and the Level NTC announcement symbol (LE08, located in area C1, except when running in level NTC, in which case the location is not specified) is displayed on the DMI, the driver shall apply non-harmonised rules.

A specific symbol for each NTC exists.

LE08: Level NTC announcement

LTR.TRS.NTC-[L0N1.TN.T].1When the Level NTC acknowledgement symbol (LE09) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level NTC by pressing the Level NTC acknowledgement symbol as indicated in the Figure LTR.TRS.NTC-[L0N1.TN.T].F1. A specific symbol for each NTC exists.

Figure LTR.TRS.NTC-[L0N1.TN.T].F1: Level NTC to be acknowledged (touch screen technology)

LTR.TRS.NTC-[L2.TN.T].1When the Level NTC acknowledgement symbol (LE09) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level NTC by pressing the Level NTC acknowledgement symbol as indicated in the Figure LTR.TRS.NTC-[L2.TN.T].F1. A specific symbol for each NTC exists.

Figure LTR.TRS.NTC-[L2.TN.T].F1: Level NTC to be acknowledged (touch screen technology)

LTR.TRS.NTC-[L0N1.TN.S].1When the Level NTC acknowledgement symbol (LE09) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level NTC by pressing the button associated to the Level NTC acknowledgement symbol as indicated in the Figure LTR.TRS.NTC-[L0N1.TN.S].F1.

Figure LTR.TRS.NTC-[L0N1.TN.S].F1: Level NTC to be acknowledged (soft key technology)

LTR.TRS.NTC-[L2.TN.S].1When the Level NTC acknowledgement symbol (LE09) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level NTC by pressing the button associated to the Level NTC acknowledgement symbol as indicated in the Figure LTR.TRS.NTC-[L2.TN.S].F1.

Figure LTR.TRS.NTC-[L2.TN.S].F1: Level NTC to be acknowledged (soft key technology)

LTR.TRS.NTC-[TN.V].1The distinct abbreviation of the corresponding National System is displayed instead of the text NTC.

LTR.TRS.NTC-[L0.TN].1The driver is responsible for not exceeding the speed limits of the unequipped line, when entering a level NTC area from a level 0 area.

### LTR.TRS.TL1Level transition to level 1 ordered by trackside (TL1)

LTR.TRS.TL1-[T1.V].1When the train approaches a level 1 area and the Level 1 announcement symbol (LE10, located in area C1, except when running in level NTC, in which case the location is not specified) is displayed on the DMI, the driver shall prepare to apply rules for level 1.

LE10: Level 1 announcement

LTR.TRS.TL1-[L0N.T1].1The driver is responsible for not exceeding the speed limits of the unequipped or level NTC line, when entering a level 1 area from a level 0 area or level NTC area.

LTR.TRS.TL1-[L0N.T1].2When the level transition from level 0 or level NTC to level 1 is performed, if a level 1 MA and track description are not received before or at the level transition border, the train is tripped (see section TR - Trip / Post Trip (TR)).

LTR.TRS.TL1-[B3.LN.T1.T].1When the Level 1 acknowledgement symbol (LE11) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level 1 by pressing the Level 1 acknowledgement symbol as indicated in the Figure LTR.TRS.TL1-[B3.LN.T1.T].F1.

Figure LTR.TRS.TL1-[B3.LN.T1.T].F1: Level 1 to be acknowledged (touch screen technology)

LTR.TRS.TL1-[B3.LN.T1.S].1When the Level 1 acknowledgement symbol (LE11) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level 1 by pressing the button associated to the Level 1 acknowledgement symbol as indicated in the Figure LTR.TRS.TL1-[B3.LN.T1.S].F1.

Figure LTR.TRS.TL1-[B3.LN.T1.S].F1: Level 1 to be acknowledged (touch screen technology)

### LTR.TRS.TL2Level transition to level 2 ordered by trackside (TL2)

LTR.TRS.TL2-[T2.V].1When the train approaches a level 2 area the Level 2 announcement symbol (LE12, located in area C1, except when running in level NTC, in which case the location is not specified) is displayed on the DMI, the driver shall prepare to apply rules for level 2.

LE12: Level 2 announcement

LTR.TRS.TL2-[L0N.T2].1The driver is responsible for not exceeding the speed limits of the unequipped or level NTC line, when entering a level 2 area from a level 0 area or level NTC area.

LTR.TRS.TL2-[L0N.T2].2When the level transition from level 0 or NTC to Level 2 is performed, if a level 2 MA and track description are not received before or at the level transition border, the train is tripped at passage of the border (see section TR - Trip / Post Trip (TR)).

LTR.TRS.TL2-[B3.LN.T2.T].1When the Level 2 acknowledgement symbol (LE13) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level 2 by pressing the Level 2 acknowledgement symbol as indicated in the Figure LTR.TRS.TL2-[B3.LN.T2.T].F1.

Figure LTR.TRS.TL2-[B3.LN.T2.T].F1: Level 2 to be acknowledged (touch screen technology)

LTR.TRS.TL2-[B3.LN.T2.S].1When the Level 2 acknowledgement symbol (LE13) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level 2 by pressing the button associated to the Level 2 acknowledgement symbol as indicated in the Figure LTR.TRS.TL2-[B3.LN.T2.S].F1.

Figure LTR.TRS.TL2-[B3.LN.T2.S].F1: Level 2 to be acknowledged (soft key technology)

LTR.TRS.TL2-[T2].3In order to transition to Level 2, the on-board must have previously established a communication session with an RBC. This is done either:

1. By the driver, as indicated in section OTH.ODA.RAD Change of Radio information (RAD).
2. Via a trackside order containing either:

1. The necessary radio data OR,
2. The order to contact the last known RBC.

The trackside order also indicates whether a communication session must be established with eventual Sleeping unit(s).

LTR.TRS.TL2-[112021.T2].1When a communication session is being established, the process can be aborted if at least one of the following conditions is met:

1. The driver closes the desk during Start of Mission
2. End of Mission is performed
3. An order to terminate the communication session is received from trackside
4. The train passes with its min safe rear end a level transition border from a level 2 area to an area where level 2 operation is not supported
5. An order to establish a communication session with a different RBC is received from trackside and the order does not request to contact an Accepting RBC
6. The train passes an RBC/RBC border with its min safe rear end
7. The engine front end passes the start of an announced radio hole
8. The driver elects to modify the Radio Network ID.

### LTR.TRS.TL3Level transition to level 3 ordered by trackside (TL3)

LTR.TRS.TL3-[T3.V].1When the train approaches a level 3 area and the Level 3 announcement symbol (LE14, located in area C1, except when running in level NTC, in which case the location is not specified) is displayed on the DMI, the driver shall then prepare to apply rules for level 3.

LE14: Level 3 announcement

LTR.TRS.TL3-[LN.T3.T].1When the Level 3 acknowledgement symbol (LE15) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level 3 by pressing the Level 3 acknowledgement symbol as indicated in the Figure LTR.TRS.TL3-[LN.T3.T].F1.

Figure LTR.TRS.TL3-[LN.T3.T].F1: Level 3 to be acknowledged (touch screen technology)

LTR.TRS.TL3-[LN.T3.S].1When the Level 3 acknowledgement symbol (LE15) is displayed on the DMI with a flashing frame, the driver shall acknowledge the transition to level 3 by pressing the button associated to the Level 3 acknowledgement symbol as indicated in the Figure LTR.TRS.TL3-[LN.T3.S].F1.

Figure LTR.TRS.TL3-[LN.T3.S].F1: Level 3 to be acknowledged (soft key technology)

LTR.TRS.TL3-[L0N.T3].1The driver is responsible for not exceeding the speed limits of the unequipped or level NTC line, when entering a level 3 area from a level 0 area or level NTC area.

LTR.TRS.TL3-[L0N.T3].2When the level transition from level 0 or NTC to 3 is performed, if a level 3 MA and track description are not received before or at the level transition border, the train is tripped at passage of the border (see section TR - Trip / Post Trip (TR)).

### LTR.TRS.DRVLevel transition initiated by driver (DRV)

LTR.TRS.DRV-[N].1The driver shall enter/modify and validate the ERTMS/ETCS level only under conditions defined by non-harmonised rules.

LTR.TRS.DRV.1In normal operation, after the Start of Mission, the driver shall not have to select the ETCS level (all other level transitions are executed automatically).

However, at standstill, the driver has the possibility to change the ETCS level from the Main window for operational fallback situations.

The ETCS level information is required for train operation in all the modes except sleeping mode.

LTR.TRS.DRV-[L0N1.T].1To access the Level window and to modify the ETCS level data, the driver shall press the button on the Default window as indicated in Figure MAIN-[L0N1.T].F2.

Figure MAIN-[L0N1.T].F2: Main button on Default window (touch screen technology)

LTR.TRS.DRV-[L2.T].1To access the Level window and to modify the ETCS level data, the driver shall press the button on the Default window as indicated in Figure MAIN-[L2.T].F2.

Figure MAIN-[L2.T].F2: Main button on Default window (touch screen technology)

LTR.TRS.DRV-[L0N1.S].1To access the Level window and to modify the ETCS level data, the driver shall press the button on the Default window as indicated in Figure MAIN-[L0N1.S].F2.

Figure MAIN-[L0N1.S].F2: Main button on Default window (soft key technology)

LTR.TRS.DRV-[L2.S].1To access the Level window and to modify the ETCS level data, the driver shall press the button on the Default window as indicated in Figure MAIN-[L2.S].F2.

Figure MAIN-[L2.S].F2: Main button on Default window (soft key technology)

LTR.TRS.DRV.2As a result, the Main window is presented to the driver.

LTR.TRS.DRV-[B3241.L0N1.T].2To re-enter or re-validate the ETCS level data, the driver shall press the button on the Main window as indicated in Figure LTR.TRS.DRV-[B3241.L0N1.T].F2.

Figure LTR.TRS.DRV-[B3241.L0N1.T].F2: Level button on Main window (touch screen technology)

LTR.TRS.DRV-[B3241.L2.T].2To re-enter or re-validate the ETCS level data, the driver shall press the button on the Main window as indicated in Figure LTR.TRS.DRV-[B3241.L2.T].F2.

Figure LTR.TRS.DRV-[B3241.L2.T].F2: Level button on Main window (touch screen technology)

LTR.TRS.DRV-[B3241.L0N1.S].2To re-enter or re-validate the ETCS level data, the driver shall press the button associated to the Level label on the Main window as indicated in Figure LTR.TRS.DRV-[B3241.L0N1.S].F2.

Figure LTR.TRS.DRV-[B3241.L0N1.S].F2: Level button on Main window (soft key technology)

LTR.TRS.DRV-[B3241.L2.S].2To re-enter or re-validate the ETCS level data, the driver shall press the button associated to the Level label on the Main window as indicated in Figure LTR.TRS.DRV-[B3241.L2.S].F2.

Figure LTR.TRS.DRV-[B3241.L2.S].F2: Level button on Main window (soft key technology)

LTR.TRS.DRV-[B3M1.L0N1.T].1To re-enter or re-validate the ETCS level data, the driver shall press the button on the Main window as indicated in Figure LTR.TRS.DRV-[B3M1.L0N1.T].F1.

Figure LTR.TRS.DRV-[B3M1.L0N1.T].F1: Level button on Main window (touch screen technology)

LTR.TRS.DRV-[B3M1.L2.T].1To re-enter or re-validate the ETCS level data, the driver shall press the button on the Main window as indicated in Figure LTR.TRS.DRV-[B3M1.L2.T].F1.

Figure LTR.TRS.DRV-[B3M1.L23.T].F1: Level button on Main window (touch screen technology)

LTR.TRS.DRV-[B3M1.L0N1.S].1To re-enter or re-validate the ETCS level data, the driver shall press the button associated to the Level label on the Main window as indicated in Figure LTR.TRS.DRV-[B3M1.L0N1.S].F1.

Figure LTR.TRS.DRV-[B3M1.L0N1.S].F1: Level button on Main window (soft key technology)

LTR.TRS.DRV-[B3M1.L2.S].1To re-enter or re-validate the ETCS level data, the driver shall press the button associated to the Level label on the Main window as indicated in Figure LTR.TRS.DRV-[B3M1.L2.S].F1.

Figure LTR.TRS.DRV-[B3M1.L2.S].F1: Level button on main window (soft key technology)

LTR.TRS.DRV.3The Level button is enabled to change the ETCS level data when:

1. The train is at standstill AND
2. The mode is SB, FS, LS, SR, OS, NL, UN, SN AND
3. The Driver ID is valid

LTR.TRS.DRV-[2230].1The Level button is also enabled in AD mode.

LTR.TRS.DRV.4The Level window is presented to the driver to re-enter/modify the ETCS level.

LTR.TRS.DRV-[B3.L0N1.T.V].1The driver shall select one of the ETCS available levels of the proposed level list (1) and then, the driver shall confirm it by pressing on the input field itself (2) as indicated in Figure LEV-[B3.L0N1.T.V].F1.

Figure LEV-[B3.L0N1.T.V].F1: Level window (touch screen technology)

LTR.TRS.DRV-[B3.L2.T.V].1The driver shall select one of the ETCS available levels of the proposed level list (1) and then, the driver shall confirm it by pressing on the input field itself (2) as indicated in Figure LEV-[B3.L2.T.V].F1.

Figure LEV-[B3.L2.T.V].F1: Level window (touch screen technology)

LTR.TRS.DRV-[B3.L0N1.S.V].1The driver shall select one of the ETCS available levels of the proposed level list (1) and then, the driver shall confirm it by pressing the button (2) as indicated in Figure LEV-[B3.L0N1.S.V].F1.

Figure LEV-[B3.L0N1.S.V].F1: Level window (soft key technology)

LTR.TRS.DRV-[B3.L2.S.V].1The driver shall select one of the ETCS available levels of the proposed level list (1) and then, the driver shall confirm it by pressing the button (2) as indicated in Figure LEV-[B3.L2.S.V].F1.

Figure LEV-[B3.L2.S.V].F1: Level window (soft key technology)

LTR.TRS.DRV-[B41.L0N1.T.V].1The driver shall select one of the ETCS available levels of the proposed level list (1) and then, the driver shall confirm it by pressing on the input field itself (2) as indicated in Figure LEV-[B41.L0N1.T.V].F1.

Figure LEV-[B41.L0N1.T.V].F1: Level window (touch screen technology)

LTR.TRS.DRV-[B41.L2.T.V].1The driver shall select one of the ETCS available levels of the proposed level list (1) and then, the driver shall confirm it by pressing on the input field itself (2) as indicated in Figure LEV-[B41.L2.T.V].F1.

Figure LEV-[B41.L2.T.V].F1: Level window (touch screen technology)

LTR.TRS.DRV-[B41.L0N1.S.V].1The driver shall select one of the ETCS available levels of the proposed level list (1) and then, the driver shall confirm it by pressing the button (2) as indicated in Figure LEV-[B41.L0N1.S.V].F1.

Figure LEV-[B41.L0N1.S.V].F1: Level window (soft key technology)

LTR.TRS.DRV-[B41.L2.S.V].1The driver shall select one of the ETCS available levels of the proposed level list (1) and then, the driver shall confirm it by pressing the button (2) as indicated in Figure LEV-[B41.L2.S.V].F1.

Figure LEV-[B41.L2.S.V].F1: Level window (soft key technology)

LTR.TRS.DRV-[L0N1].1When the Level data has been entered and validated, the Main window is presented to the driver to continue with the actions if the selected level is level 0, level 1 or NTC.

LTR.TRS.DRV-[L2].1When the Level 2 data has been entered and validated, if at least one Mobile Terminal is registered to a Radio Network and RBC contact information is valid, the Main window is presented to the driver with all the buttons disabled and with the Hour Glass symbol (ST05) indicating that an answer from the RBC is being waited for.

LTR.TRS.DRV-[L2].2When the Level 2 data has been entered and validated, if either no Mobile Terminal is registered to a Radio Network or RBC contact information is not available, the driver shall re-enter the Radio information data. How to re-enter and re-validate the Radio data is explicated in the SB.RAD Enter or re-validate Radio information (RAD) section.