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Page#    1542 FAQs  next>>
Aug 12 (15:05)
General

Entry# 2117     
sreerup kol^~
Which are the 10 countries with the most amount of railway tracks?

★★★  General Travel
0 Followers
6008 views
Aug 12 (14:51)
Blog Post# 3705539-0     
sreerup kol^~   Added by: sreerup kol^~  Aug 12 (15:05)
The 10 countries with the most railways (on the basis of kilometers of track)
1. USA
2. China
3. Russia
4. India
5.
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Canada
6. Germany
7. Australia
8. Agrentina
9. South Africa
10. France
Types of switch or turnout viz., single crossover switch, universal crossover switch, double crossover switch, diamond crossing switch or track crossing, single slip switch, double slip switch, lapped switch, wye or equilateral switch, three way switch

Info Update
0 Followers
6110 views
Aug 11 (18:51)
Blog Post# 3703464-0     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (21:29)
Single crossover: A single crossover consists of two turnouts positioned in two tracks that allow the vehicle to go from one track to another. The two tracks are usually, but not always, parallel, and the turnouts are usually identical.
Information and pictures source: click here

5525 views
Aug 11 (20:26)
Blog Post# 3703464-1     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (21:29)
Universal crossover: A pair of single crossoversÔÇöone right hand and one left handÔÇöthat are arranged sequentially along the tracks is called a universal crossover turnout. A universal crossover is an arrangement of switches that allow trains to change tracks in either direction.
Information source: click here and click here
Picture no.1 and 2 source: click here
Picture no.3 to 8 source: Self

5491 views
Aug 11 (20:36)
Blog Post# 3703464-2     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (21:30)
Double crossover: A double crossover ÔÇösometimes called a scissors crossoverÔÇöconsists of two crossovers of opposite hand orientation superimposed upon each other. In addition to the four turnouts involved, a track crossing diamond is needed between the two main tracks. A double crossover is typically used only when it is necessary to be able to switch from both tracks to the other in either direction, but there is insufficient space to install a universal crossover as described above.
Information and pictures source: click here

5481 views
Aug 11 (20:39)
Blog Post# 3703464-3     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (21:30)
Diamond crossing or track crossing: Track crossings, as the name implies, permit two tracks to cross each other. Track crossings are often called either crossing diamonds or simply diamonds, due to their plan view shape.
Information and pictures source: click here

5735 views
Aug 11 (20:42)
Blog Post# 3703464-4     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (21:30)
Slip switch:
ÔĆ║´ŞĆA single slip switch works on the same principle as a double slip but provides for only one switching possibility. Trains approaching on one of the two crossing tracks can either continue over the crossing, or switch tracks to the other line. However, trains from the other track can only continue over the crossing, and cannot switch tracks. This is normally used to allow access to sidings and improve safety by avoiding having switch blades facing the usual direction of traffic. To reach the sidings from what would be a facing direction, trains must continue over the crossing, then reverse along the curved route (usually onto the other line of a double track) and can then move forward over the
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crossing into the siding.
ÔĆ║´ŞĆA double slip switch (double slip) is a narrow-angled diagonal flat crossing of two lines combined with four pairs of points in such a way as to allow vehicles to change from one straight track to the other, as well as going straight across. A train approaching the arrangement may leave by either of the two tracks on the opposite side of the crossing. To reach the third possible exit, the train must change tracks on the slip and then reverse.
Information and pictures source: click here

5721 views
Aug 11 (20:44)
Blog Post# 3703464-5     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (21:31)
Lapped turnout: Lapped turnouts can be used to achieve a more compact track layout in constrained locations. In a lapped turnout, as seen in following picture, the switch rails for a second turnout will be placed between the switch and the frog of the initial turnout. This introduces a third frog where a closure rail of the first turnout crosses a closure rail of the second turnout.
Information and pictures source: click here

5712 views
Aug 11 (20:53)
Blog Post# 3703464-6     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (21:31)
Wye or equilateral: A wye turnout has no straight exit track. It has exits that turn to both the left and right. A wye is never closed, only thrown left or thrown right.
Information and 1st picture source: click here
2nd picture source: click here

5702 views
Aug 11 (20:56)
Blog Post# 3703464-8     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (21:31)
Three-way: A three-way turnout or switch is used to split a railroad track into three divergent paths rather than the more usual two.
Information source: click here
Picture source: click here
Switches and crossings - Components of turnout or switch

Info Update
0 Followers
6071 views
Aug 11 (17:56)
Blog Post# 3703315-0     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (18:27)
Turnout or switch is a mechanical device that are used to guide the trains from one rail track to another. Following blogs explain components of turnout
Text source: click here
Picture source: click here

5602 views
Aug 11 (18:00)
Blog Post# 3703315-1     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (18:28)
Points (switch rails or point blades) are the movable rails which guide the wheels towards either the straight or the diverging track. They are tapered on most switches, but on stub switches they have square ends. In ordinary conversation, it is common to use the word ÔÇťswitchÔÇŁ when referring to a ÔÇťturnout,ÔÇŁ which is technically incorrect.
Source: click here

5599 views
Aug 11 (18:02)
Blog Post# 3703315-2     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (18:28)
Stock rails are the running rails immediately alongside of the switch rails against which the switch rails lay when in the closed position. The stock rails are otherwise ordinary rails that are machined, drilled, and bent as required to suit the design of the turnout switch and the individual switch point rails.
Source: click here

5591 views
Aug 11 (18:05)
Blog Post# 3703315-3     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (18:29)
Frog is a component placed where one rail crosses another, refers to the crossing point of two rails. The rest of the English-speaking world calls such units by the more obvious term ÔÇťcrossings.ÔÇŁ
Source: click here

5689 views
Aug 11 (18:07)
Blog Post# 3703315-4     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (18:29)
Closure rails are the straight or curved rails that are positioned in between the heel of switch and the toe of frog.
Source: click here

5664 views
Aug 11 (18:09)
Blog Post# 3703315-5     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (18:29)
Guard rail (check rail) is a short piece of rail placed alongside the main (stock) rail opposite the frog. These exist to ensure that the wheels follow the appropriate flangeway through the frog and that the train does not derail.
Source: click here

5626 views
Aug 11 (18:17)
Blog Post# 3703315-6     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (18:30)
Heel block assemblies are units placed at the heel of the switch that provide a splice with the contiguous closure rail and a location for the switch point rail to pivot at a fixed spread distance from the stock rail.
Source: click here

5603 views
Aug 11 (18:19)
Blog Post# 3703315-7     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (18:30)
Switch point rail stops act as spacers between the switch point rail and the stock rail. Stops laterally support the switch point from flexing laterally under a lateral wheel load and thereby possibly exposing the open end of switch point rail to head-on contact from the next wheel.
Source: click here

5597 views
Aug 11 (18:21)
Blog Post# 3703315-8     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (18:30)
A switch operating device moves switch rails. Switch rails can be thrown (moved) from one orientation to another by either a hand-operated (manual) switch stand or a mechanically or electro-mechanically (power-operated) switch machine. In both cases, the operating devices are positioned at the beginning of the turnout opposite the switch-connecting rods near the point of the switch rails.
Source: click here
Track recording car

Aug 10 (23:32)
Blog Post# 3701265-4     
RF from HPT Ó▓ŽÓ│ÇÓ▓¬Ó▓ĽÓ│Ź Ó▓ëÓ▓│Ó│ŹÓ▓│Ó▓┐~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (17:37)
Track recording car Pic credit : Mahesh k

6004 views
Aug 10 (23:48)
Blog Post# 3701265-6     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (17:38)
A track recording car is an automated track inspection vehicle on a rail transport system used to test several geometric parameters of the track without obstructing normal railroad operations. Some of the parameters generally measured include position, curvature, alignment of the track, smoothness, and the crosslevel of the two rails. The cars use a variety of sensors, measuring systems, and data management systems to create a profile of the track being inspected.
Source: click here
For more information regarding track recording car refer click here and click here

5873 views
Aug 11 (07:58)
Blog Post# 3701265-8     
HOG WAM4 WAP1~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 11 (17:39)
Every route has a periodic inspection of track quality using the track recording car. That's why we regularly see posts on IRI about RDSO coaches visiting some station with a WAP5 loco etc.
It's just that the Track recording coaches are managed by RDSO, who will use the data for their own research and design operations.
Check rail

★  Info Update
0 Followers
8930 views
Aug 08 (10:35)
Blog Post# 3693620-0     
16591­čö╣Hampi Express­čö╣16592^~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 08 (10:39)
Photo of check rail
Picture source: Self

★  
Jul 28 2016 (14:59)
Blog Post# 1943444-5     
HOG WAM4 WAP1~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 08 (10:39)
It's called a 'Check Rail'. Usually you can see these on the inner side of curves. If a train derails on a curve, it will tend to move over the outer rail ( The wheel will climb over the outer edge of the curve). In that case, the inner wheel will touch this check rail and stop further outward movement. You can see these kinds of rails at points and switches also, where trains switch tracks.

15092 views
Jul 28 2016 (23:41)
Blog Post# 1943444-7     
Vinay~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 08 (10:40)
i think technical term used is ""gaurd rail",and yes it prevents wheels from derailing(extra stability),usually we can see them on bridges,under FOB's

15065 views
Jul 28 2016 (23:55)
Blog Post# 1943444-8     
HOG WAM4 WAP1~   Added by: 16591­čö╣Hampi Express­čö╣16592^~  Aug 08 (10:41)
Both terms are interchanged frequently. But normally, the term 'Guard rails' is used for the cases where there are 2 inner rails. These are usually seen on bridges and belo FOB's etc. The 'term 'check rail' is usually used for the cases like in the above pic, where the extra rail is on only one side of the tracks. However, there is no fixed definition for these terms I guess and I have seen people use both terms to refer to such track layouts.
Page#    1542 FAQs  next>>

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