Does IR have push-pull operations?

20-06-2019

Does IR have push-pull operations? Push-pull operations are seen in a few places. The Bangalore-Mysore Passenger has a loco at one end and driving trailer cab at the other end for true push-pull operation. The trailer cab is sometimes seen in the middle of a rake instead of the very end (Bangalore-Arsikere-Nanjangud Passenger) The 6057/6058 Sapthagiri Express between Chennai Central and Tirupati (via Renigunta) has a WAM-4 permanently coupled to the rake at one end, with a cabin in the last coach at the other end which has all the controls of the WAM-4 replicated. ये भी पढ़े - कई जानलेवा बीमारियों से बचाव का

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How do the block or token instruments work?
July 16, 2019

In manual block working of double lines, the block instruments that connect the two signalboxes (and which dispense the tokens in the case of token systems) have to be coordinated by the signal operators at the two signalboxes. The signalbox that accepts a train into its block section must first set the Line Clear indication on the block

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What kinds of block instruments are or were used in India?
July 16, 2019

In India, the most prevalent form of physical token system to be found in recent decades is the Neale's Ball Token System and variants such as Neale's Voucher Block, Neale's Tablet Token, etc. Other systems such as Theobald Key Token, Webb and Thompson electric token staff, Tyer & Co.'s key token instrument (one-wire three-position instrument

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What’s a token system or a tokenless system?
July 16, 2019

A token block system uses a physical item (the token) of some sort, such as a ball as in the Neale's Ball token system (see below), which is physically carried or manipulated in some way to indicate permission for a train to enter a block of track. A tokenless system, such as may be obtained by a combination of interlocking and semaphore signals,

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What is the Absolute Block System of train working?
July 16, 2019

Absolute Block' refers to a system where the the track is considered to consist of a series of sections, such that when one train is occupying a section of track (the block section), no other train is allowed to enter that section. In addition, no train can enter an empty block section without first securing the permission of the station in

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What systems does IR use for control and reporting of signals and related equipment?
July 16, 2019

Panel Interlocking or Route Relay Interlocking are common in most busy stations. Usually, with these the aspects of all signals and positions of trains in various track sections is shown on a control panel. The control circuits usually use underground cables along the track, and sometimes overhead cables. Trackside cables are not used much because

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What other methods of communication with train crew are used on IR?
July 16, 2019

Handheld radios (walkie talkie sets) are widely used now (since the late 1990s) by train crew, yard crew, etc.). Some stations have transmitters allowing them to broadcast to all walkie talkies in the vicinity. Often, because of their higher power they are able to transmit to walkie talkie sets carried by crew that are farther away than the

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