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Chapter 2. Concepts for Safe Railway Operation and Control 2.2.3.7. Stand By The Stand By (SB) [88, p. 14] Mode is the default mode after starting the ETCS on-board equipment. In this mode, a self-test and a test of all external devices is executed. ETCS supervises that the train does not move at all. 0 1 2 3 STM 2.2.3.8. Trip In the Trip (TR) [88, p. 23] Mode, the emergency brake is active until the train completely stops and the conductor acknowledges the Trip. This changes the ETCS operational state to Post Trip (Subsection 2.2.3.9). 0 1 2 3 STM 2.2.3.9. Post Trip The Post Trip (PT) [88, pp. 24-25] Mode is entered, when the train conductor acknowledges a Trip after an emergency stop, which then releases the breaks. In Post Trip, it is possible that the train drives a certain distance (defined by a national value) backwards. Only this distance is supervised in this mode by ETCS. 0 1 2 3 STM 2.2.3.10. System Failure In case of an error in the ETCS on-board equipment that leads to an failure of the system the on-board equipment should switch to System Failure (SF) [88, p. 11]. In this Mode, the emergency braking should be permanently active. 0 1 2 3 STM 2.2.3.11. Isolation The Isolation (IS) [88, p. 9] Mode should be used if the EVC is isolated from the other on-board equipment (including the driver) and is also physically isolated from the brake systems. In this Mode, the ETCS on-board equipment does not have any responsibility. 0 1 2 3 STM 2.2.3.12. No Power The No Power (NP) [88, p. 10] Mode should be used if the ETCS on-board equipment is switched off. 0 1 2 3 STM 18
2.3. openETCS 2.2.3.13. Non Leading The Non-Leading (NL) [88, p. 26] Mode is used for slave engines, which are not electrically coupled and are therefore not remote controlled by the master, as it is the case for the Sleeping mode (Subsection 2.2.3.6). This situation is also called Tandem [22]. In this Mode, only the trains position is acquired. 0 1 2 3 STM 2.2.3.14. STM European The STM European (SE) [88, pp. 27-28] Mode should enable the usage of supervision functionality of national systems by ETCS. Also, the access of the STM to on-board equipment via ETCS should be possible. ETCS supervises the train movement with a profile given by the STM. 0 1 2 3 STM 2.2.3.15. STM National In the STM National (SN) [88, p. 29] Mode, the STM has access to the train on-board equipment via ETCS. The STM is responsible for all supervisions including the interaction with the driver. 0 1 2 3 STM 2.2.3.16. Reversing In the Reversing (RV) [88, pp. 30-31] Mode, a train can drive backwards. The speed and position of the train is supervised by ETCS. 0 1 2 3 STM 2.2.4. Mode Transitions There are various possible transitions between Modes under different conditions [88, pp. 36-40], which are, due to their extensiveness, not explicitly listed here. [88, pp. 37] provides a good overview in form of a transition table. 2.3. openETCS openETCS [38, 37] describes the idea of the approach to implement the ETCS functionality on the basis of open source software (OSS) [94]. Due to the advantages, openETCS should not only be implemented by OSS but by Free/Libre Open-source Software (FLOSS). This means that the openETCS software should not only be distributed with open source code but also under licenses that allow users to use, study, modify, and (re-)distribute the source code. The main advantages compared to conventional closed source software methods are listed below: reduction of licenses costs No external / commercial license fees are necessary because other FLOSS can be used for openETCS. 19
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Part III. openETCS Case Study 77
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11 openETCS Simulation Generally, a
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Chapter 12. Conclusion and Outlook
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Part IV. Appendix 241
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Appendix A. GOPPRR to MOF Transform
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Appendix B. openETCS Meta Model Con
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DopenETCS Domain Framework D.1. Dom
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D.2. Domain Framework Source Code 8
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Appendix E. openETCS Generator 39 <
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FMetaEdit+ Generators F.1. GOPPRR X
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GopenETCS Unit Testing G.1. Unit Te
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Appendix H. openETCS Simulation 14
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Glossary ANTLR ANother Tool for Lan
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Glossary EVC An European Vital Comp
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Glossary OEM An original equipment
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Glossary XML The Extensible Markup
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Bibliography [12] “EN 50128 - Rai
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Bibliography [39] ——, ““Ope
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Bibliography [69] T. J. Parr and R.
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Index Artefact, 51 Automatic train
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Index Linux, 149 Memory management,
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