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Blog Entry# 4723427
Posted: Sep 23 2020 (18:12)

1 Responses
Last Response: Sep 23 2020 (18:18)
General Travel
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Sep 23 2020 (18:12)  
Snehashish.Arailfan^~   24754 blog posts
Entry# 4723427              
How do trains change tracks while running?


To make a train change its track, a special mechanical arrangement is made. This arrangement is known as a railroad switch and it consist of pair of rails, known as switching rails or points, that are linked to one another. As the name suggests, the switching rails can direct or guide the train, either on
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straight path or on the diverging path which is established by a curved rail line.

The railroad switch can only be in one of the two positions at a time. If it is locked the train will change the track. If it is open, it will go straight-through.


It is very important that the switch is set up carefully. Most train derailments take place at the point when it goes from one track to another track. A loose set up is a guarantee of making train jump off the track, a disaster. However, railway authorities, not only in India, but around the world has expertise the art of train track changing. Most times the process is so smooth, that one even doesn't notice it. However an experienced traveler can make out with the sound of the train, that indeed the track is changed.

Sometimes tracks are changed at the last moment to change the platform at which the train arrives. Indian railways is overly notorious in this regard. So many times people are caught napping when they would be waiting for train at one station only to here a last time announcement that the train is arriving at the other platform. This is especially problematic if the halt of train is of couple of minutes only, on a specific station.

In India there a re mostly two railway tracks that you'll see running parallel to each other. One is known as the 'up' track, and other is 'down' track. But as soon as any railway station comes, there are plenty of tracks that one can see. This is where the train will starts climbing from one track to another to get to the platform from where it is scheduled to leave.

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Sep 23 2020 (18:18)
G_I_P_R^~
G_I_P_R^~   7211 blog posts
Re# 4723427-2               Past Edits
The technical parlance is different in IR.

It is called as "Rail Road Switch" only in the US because the term Rail Road is used for trains only in the USA.

Rest of
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the world uses the word "point" to denote the arrangement of track changes. Some points are manually controlled while others are controlled electronically through servo motors. The person in-charge of the operation is called a "Pointsman" in IR parlance.

The usage of points are the reason why the Inner Diameter and Outer Diameter of the wheels are of different dimension.

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