Download SIGNALLING SYSTEMS

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RATO 6 / 05-2012
CONTENTS
6 SIGNALLING SYSTEMS........................................................................................... 6 6.1 DEFINITIONS, SYMBOLS AND ABBREVIATIONS .......................................... 6 6.1.1 Symbols ............................................................................................................... 17 6.1.2 Abbreviations ...................................................................................................... 17 6.2 BASIC PRINCIPLES OF SIGNALLING SYSTEMS......................................... 18 6.2.1 General ................................................................................................................ 18 6.2.1.1 Engineering configuration requirements for signalling systems
planning................................................................................................................ 18 6.2.1.2 Effect of maximum track speed in signalling systems planning .... 19 6.2.1.3 Signalling apparatus code ................................................................... 19 6.2.2 Interlocking system ............................................................................................ 19 6.2.2.1 Computerised interlocking system ..................................................... 19 6.2.2.2 Relay interlocking system .................................................................... 19 6.2.2.3 Mechanical interlocking system .......................................................... 20 6.2.2.4 Area key lock system with signals ...................................................... 20 6.2.2.5 Area key lock system............................................................................ 21 6.2.3 Signals and signal aspects ............................................................................... 21 6.2.3.1 Main signal aspects .............................................................................. 24 6.2.3.2 Block signal aspects ............................................................................. 24 6.2.3.3 Distant signal aspects .......................................................................... 24 6.2.3.4 Shunting signal aspects ....................................................................... 25 6.2.3.5 Combined signal.................................................................................... 25 6.2.3.6 Signal aspects of other signals ........................................................... 26 6.2.3.7 Radio signal operation.......................................................................... 26 6.2.3.8 Aspect abbreviations ............................................................................ 26 6.2.3.9 Control lines in a new interlocking system ........................................ 27 6.2.3.10 Control lines in interlocking system to be modified ....................... 32 6.2.3.11 Fictive aspects in a centralized ATP control ................................... 37 6.2.4 Track vacancy proving ...................................................................................... 41 6.2.5 Line block ............................................................................................................ 41 6.2.6 Connecting a point to signalling apparatuses ............................................... 41 6.2.7 Route track .......................................................................................................... 43 6.2.8 Main route ........................................................................................................... 44 6.2.8.1 Main route overlap ................................................................................ 45 6.2.9 Shunting route .................................................................................................... 45 6.2.10 Level crossing system..................................................................................... 46 6.2.11 Signalling system commands and indications ............................................ 46 6.2.11.1 Commands ........................................................................................... 46 6.2.11.2 Indications ............................................................................................ 46 6.2.12 User manual ..................................................................................................... 47