automatic signal train

8/6/2019 Automatic Signal Train

1/119

faizan nazirfaizan nazir

SYSTEM OF WORKING

means the system adopted for the timebeing for the working of trains on any

portion of a railway.


2/119


For safe running of trains,

different methods are adoptedto control the train movement

between two given points, say

between two stations, mainly toensure that not more than one

train is permitted in to the

block section at a time.


3/119


. In Indian Railways, six systems of train

working are adopted and they are:

(a) The Absolute Block System

(b) The Automatic Block System

(c) The Following Trains System

(d) The Pilot Guard System

(e) The Train Staff and Ticket System

(f) The One Train Only System


4/119


The

Automatic

Block

System


5/119


What is Automatic Block?

What is the difference between automatic and absolute

system?

Where it is required ?

Why it is required?

What are the requirements ?

What are the essentials?

How it is operated?

What is the role of signaling department ?


6/119


What is Automatic Block?

Space intervals are secured automatically by the use

of Track Circuits or Axle Counters


7/119


What is the difference between automatic and absolute

system?

1)The main difference between absolute block and

automatic block is that in the latter, space intervals

are secured automatically by the use of Track

Circuits or Axle Counters while in the former by

human agencies in the form of 2 Station Masters

located at the ends of a block section.


8/119


Absolute Automatic

2) Normal aspect on signal post


9/119


Absolute

Automatic

3) A marker board is provided on

signal post

A


10/119


A

4) Semi auto signal post now working as

automatic signal


11/119


4) Semi auto signal post now working as

manual signal


12/119


Where it is required ?

Section where train frequencies are more.

Examples

1) Mumbai suburban ( from Mumbai CST to Kalyan)

2) Chennai suburban

3) Calcutta


13/119


Why it is required?

To improve the integrity of safe traffic without time delay.


14/119


What are the requirements ?

1) Continuous track circuit or axle counter

( means to prove the presence of train on track)

2) Three aspect signaling or four aspect signaling.


15/119


The essentials of automatic block system are

1)The line shall be provided with Continuous Track Circuits or

Axle Counters.

Up

Down

A station B station


16/119


2) The line between two stations may where

required be divided into a series of section known

as "Automatic Block Signalling Section".

Up

Down

A station B station


17/119


Up

Down

A station B station


18/119


19/119


Up

Down

A station B station


20/119


4)Track Circuits or Axle Counters should controls the

aspects of the Signal such that:

i) It cannot display the `OFF' aspect unless the line is

clear not only up to the next stop signal but also for an

adequate distance beyond it.

{ OFF' aspect can be yellow, double yellow orgreen. }

ii) The Signal is automatically replaced to `ON' soon after

it is passed by a Train.


21/119


a) Yellow with the minimum clearance ofone Block

plus Overlap.

b) Double yellow with minimum clearance oftwo

Block stations plus Overlap

c) Green with minimum clearance ofthree Block

stations plus Overlap


22/119



23/119


Up

Down

A station B station


24/119


Up

Down

A station B station


25/119


Up

Down

A station B station


26/119


Up

Down

A station B station


27/119


Up

Down

A station B station


28/119


Up

Down

A station B station


29/119


Up

Down

A station B station


30/119


31/119


Up

Down

A station B station


32/119


Up

Down

A station B station


33/119


Up

Down

A station B station


34/119


Up

Down

A station B station


35/119


Up

Down

A station B station


36/119


Up

Down

A station B station


37/119


Up

Down

A station B station


38/119


39/119


Up

Down

A station B station


40/119


Up

Down

A station B station


41/119


Up

Down

A station B station


42/119


43/119


44/119


Up

Down

A station B station


45/119


46/119


Up

Down

A station B station


47/119


Up

Down

A station B station


48/119


Up

Down

A station B station


49/119


Up

Down

A station B station


50/119


Up

Down

A station B station


51/119


Up

Down

A station B station


52/119


Up

Down

A station B station


53/119


Up

Down

A station B station


54/119


Up

Down

A station B station


55/119


Up

Down

A station B station


56/119


Up

Down

A station B station


57/119


Up

Down

A station B station


58/119


Up

Down

A station B station


59/119


60/119


Up

Down

A station B station


61/119


Up

Down

A station B station


62/119


Up

Down

A station B station


63/119


Up

Down

A station B station


64/119


Up

Down

A station B station


65/119


Up

Down

A station B station


66/119


Up

Down

A station B station


67/119


Up

Down

A station B station


68/119


Up

Down

A station B station


69/119


Up

Down

A station B station


70/119


Up

Down

A station B station


71/119


Up

Down

A station B station


72/119


Up

Down

A station B station


73/119


Up

Down

A station B station


74/119


Up

Down

A station B station


75/119


Up

Down

A station B station


76/119


77/119


78/119


Up

Down

A station B station


79/119


Up

Down

A station B station


80/119


81/119


Up

Down

A station B station


82/119


Up

Down

A station B station


83/119


Up

Down

A station B station


84/119


Up

Down

A station B station


85/119


Up

Down

A station B station


86/119


Up

Down

A station B station


87/119


Up

Down

A station B station


88/119


Up

Down

A station B station


89/119


Up

Down

A station B station


90/119


Up

Down

A station B station


91/119


Up

Down

A station B station


92/119


Up

Down

A station B station


93/119


Up

Down

A station B station


94/119


Up

Down

A station B station


95/119


Up

Down

A station B station


96/119


Up

Down

A station B station


97/119


Up

Down

A station B station


98/119


Up

Down

A station B station


99/119


Up

Down

A station B station


100/119


Up

Down

A station B station


101/119


Up

Down

A station B station


102/119


Up

Down

A station B station


103/119


Up

Down

A station B station


104/119


Up

Down

A station B station


105/119


Up

Down

A station B station


106/119


Up

Down

A station B station


107/119


108/119


Up

Down

A station B station


109/119


Up

Down

A station B station


110/119


Up

Down

A station B station


111/119


Up

Down

A station B station


112/119

Up

Down

A station B station


113/119


Up

Down

A station B station


114/119


Up

Down

A station B station


115/119


Up

Down

A station B station


116/119


THE END


117/119


118/119


The Automatic Block System


119/119

The Automatic Block System

automatic signal train

Documents