Page 480 - IRSEM_Main Book

(c) Such Gate signal, which has been converted as mid-section modified Semi-
Automatic Signal, is provided with ‘A’ & ‘AG’ markers. During modified
Automatic Signalling working, these markers will be extinguished.

(d) During normal conditions, mid-section modified semi-automatic stop signal
shall work as normal automatic stop signal.

(e) The mid-section Modified automatic signal shall be painted with alternate
blue and white strips in between.

(f) The relevant indications whether the signal is in normal automatic mode or
modified semi-automatic mode shall be available to the station masters at
both the ends.

Note: This chapter has under mentioned Annexure

S.No. Annexure No. Description
1 20-A1 Automatic Signalling Scheme with OFC, MSDAC & OC

Note: This chapter has under mentioned Drawings in Appendix II
S.No. Drawing No. Description

1 20-D1 Automatic Signalling Scheme with OFC, MSDAC & OC

Chapter 20: Automatic Block Signalling Page 426 of 535