Part Ⅰ  Basic Concept of Railway Station Interlocking
  Task Ⅰ  Interpretation of Layout Plan of Signaling Equipment
  Task Ⅱ  Basics of Railway Station Interlocking
  Exercises
Part Ⅱ  Centrally Relay-Based Interlocking
  Task Ⅰ  Overview of 6502 Electric Interlocking
  Task Ⅱ  Selective Circuit Group of 6502 Electric Interlocking
  Task Ⅲ  Actuating Circuit Group of 6502 Electric Interlocking
  Exercises
Part Ⅲ  Computer Based Interlocking
  Task Ⅰ  Composition and Basic Principle of Signaling Equipment in CBI Station
  Task Ⅱ  DS6-KSB CBI System and Maintenance
  Exercises
Part Ⅳ  Actuating Circuit
  Task Ⅰ  Turnout Control Circuit
  Task Ⅱ  Signal Lighting Circuit
  Task Ⅲ  25 Hz Phase-sensitive Track Circuit
  Exercises
Part Ⅴ  Lightning Protection of Signaling Equipment
  Task Ⅰ  Lightning and Lightning Protection
  Task Ⅱ  Example of Lightning Protection for Railway Station Signaling Equipment
  Task Ⅲ  Lightning Protection Maintenance of Railway Station Signaling Equipment
  Exercises
Bibliography