How does Indian Railway Signal work?

Related questions

1. How do automatic train signals work?
2. What is Warner signal?
3. What do train signal lights mean?
4. What is a subsidiary signal?
5. Do trains turn around?
6. What activates a train signal?
7. What is moving block system?
8. What is a shunt signal?
9. What is fixed block?
10. What is fixed block Signalling?

Tags

1. #railways
2. #automatic
3. #train
4. #railway
5. #sections
6. #working
7. #block
8. #indian
9. #portal
10. #signals
11. #which
12. #movement
13. #signalling
14. #system
15. #trains
16. #central
17. #controlled