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4.3 Call-on Signal
  
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Railway
Sri Lanka
To enter locomotive in the yard while shunting, the high controlled signals cannot be given because of the presence of the coaches on the same line (platform). In this situation a call-on signal is used.  The call-on signal, which is mounted above the base of the high controlled signal, has three lamps and two aspects as illustrated below.

 

 
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4.1 Automatic Signals ] 4.2 Controlled Signals ] [ 4.3 Call-on Signal ] 4.4 Typical Signal Layout ]

R. Jayanthan
Last updated on 01 January, 2002