Special instructions ,CRS, SIL4

Approved special instructions- Special instructions Approved or prescribed by CRS.

There are total 9 CRS in railway 

1. Mumbai - CR and WCR
2. Mumbai - WR and NWR
3. Kolkata - ER and ECR
4. Kolkata  - NFR and Metro
5. Kolkata- SER, ECOR,SECR
6. New Delhi - NR
7. Lucknow- NER and NCR
8. Banglore- SR and SWR
9. Secunderabad- SCR

CCRS is head of all CRS and his HQ is Lucknow.CCRS acts as principal technical advisor to central government.

Special instructions- Instructions issued by the Authorized officer in respect to particular cases or special circumstances.
Generally PCOM is Authorized officer  nominated by GM

Block back - used for Double line and single line

Block forward- used for Double line .

Safety Integrity Test

To be done once in 05 years ( As per new SEM).


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