BASICS OF SIGNAL ENGINEERING
Issued in November 2009
INDIAN RAILWAYS INSTITUTE OF
SIGNAL ENGINEERING & TELECOMMUNICATIONS
SECUNDERABAD - 500 017
S-1
BASICS OF SIGNAL ENGINEERING
CONTENTS
S.No
Chapter
Page No
1
Role of Signalling in Railway operation
1
2
Definitions (GR 1.02)
2
3
Signalling Concepts
7
4
Fixed Signals, Kinds, Aspects & Indications (GR.3.02-3.08)
9
5
Designation of Signals
21
6
Location of Signals
24
7
Subsidiary Signals, Repeaters, Indicators, Markers & Back Lights
31
8
Overlaps
49
9
Breaking Distance
53
10
Sighting Distance & Visibility of Signals
55
11
Isolation
58
12
Simultaneous Reception and Despatch of Trains
62
13
Systems of working
65
14
Classification of Stations – Comparison of A, B & C
76
15
Standards of Interlocking
82
16
Operation of Points
89
17
Inter Cabin control
91
18
Level Crossing Gates
93
19
Section capacity
107
20
Principles of Signal Engineering
109
21
Annexure 1: Intermediate Sidings
111
Drafted By
M.D.Dixit, IES-7
Checked By
S.V.Rao, PS
Approved By
Ch.Mohan, SPS
DTP and Drawings
G.Rajagopal, SE (D)
No. of Pages
115
Date of Issue
November, 2009
Version No
A2
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INTRODUCTION
CHAPTER 1: ROLE OF SIGNALLING IN RAILWAY OPERATION
1.1
Railway Signalling and Communication Technology, though evolved primarily for safe working of trains, plays an important part in increasing line capacity with