|
Post PNR | Post Blog | Advanced Search |
A comprehensive compilation of Indian Railways Signs and their meanings. 20 Answers A comprehensive compilation of Indian Railways Signs and their meanings. Oct 23 2012 (22:46) Blog Post# 560538-0 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:05) A COMPILATION OF RAIL SIGNS AND THEIR MEANINGS: Compiled by me thanks to years of railfanning experience after reffering to many people and online material, I would quote an example with every sign to aid in understanding to the best extent possible: The first thing we are concerned about when we are talking about movement of trains is anything which makes the train to de-accelerate, they can be in the following instances. A... more... Oct 23 2012 (23:00) Blog Post# 560538-1 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:05) KILOMETER MARKINGS BESIDE P.WAY: It is common to find distance markings beside P.Way(Track) in every section be it a normal track in plains, plateaus, ghats or mountain railways in IR. They essentially mean distance from a junction to another junction(this being a branch line and the other two junctions being Main Lines or this section is laid later) or to a terminus. These are mentioned on slabs beside tracks at particular intervals say 100 mts in diesel sections and on OHE Poles in case of an electric section. Ex: begins with 0 at... more... Oct 23 2012 (23:23) Blog Post# 560538-3 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:05) SIGNAL SIGHTING INDICATOR: This is to assist/draw attention of LP/ALP that a signal is ahead. This type is usually a Black vertical rectangle with a yellow bar on top and bottom, and a O in the middle.This type is for goods and a rectangular yellow board with diagonal black lines for passenger. Ex: this can be found in almost all sections, the passenger type board can be found between Tiruvarur-MV. However... more... Oct 23 2012 (23:40) Blog Post# 560538-4 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:06) WHISTLE INDICATORS: Many of non railfans are usually under an assumption that crew honk for reasons beyond one’s comprehension which is not exactly the case.There are zones and boards to indicate when the crew has to honk enroute with exceptions of course. W/L board is placed wherever IR deems the crew have to keep others alerted,in this case W/L means Whistle for Level crossing or seethe/Phata in hindi. Ex:... more... The mind blowing and highly useful compilations.The examples that you have provided makes it even more easier to understand. There are many here(including me) who would have shied away from asking these questions lest somebody thinks we are not so knowledgeable yet call ourselves railphans. These compilations will be most welcomed by such group. God bless you. Oct 24 2012 (09:02) Blog Post# 560538-17 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:07) A few other common boards sighted beside P.Way: GRADIENT INDICATORS: These are again white slabs usually found beside P.Way with numbers and an arrow in black over it.The direction of arrow indicates a down or uphill gradient ahead. Ex: 750 with a arrow over it pointing downwards indicates there would be a descent of 1 in 750, lesser the number on the board... more... Oct 24 2012 (09:29) Blog Post# 560538-18 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:07) Here are a few pics, i have made these in MS Paint :D So Please dont mind the clarity, edges, shapes or all of the above,i hope you get the idea though!! 1.Speed restriction 2.Termination for goods 3.... more... Oct 24 2012 (09:49) Blog Post# 560538-22 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:07) 1. These type of boards indicate there is a halt station ahead which may not have proceed, home and starter signals as it wouldnt be having any loops. Ex: Raigir between SC and KZJ in SC division or LOGH between YPR-BYPL, please note that stations are not considered halt stations in case of an Automatic Block Territory, they are only called so in Absolute Block, however there may be a few exceptions. 2. The W/L Board i have mentioned about earlier. Oct 24 2012 (10:33) Blog Post# 560538-36 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:07) Now getting to SIGNALLING SYSTEMS: THE BLOCK SYSTEM: Before we get into different kinds of signals we have to understand the meaning of a block section initially. Looking back into time there were neither timetables nor high rail traffic however that is not the case today owing to the increased traffic and reduced slots. There are various risks involved in train operations however the operations side ones include collisions either head on or from the rear, the former possible in single line sections. It is always safe to operate a single train in... more... Oct 24 2012 (11:00) Blog Post# 560538-42 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:07) Oops one more important SIGN i forgot to mention which is also common at loops, FM written on ground level on a rectangular slab beside the track. FM stands for a fouling mark, no train can cross this point without being permitted in some form.When a long goods rake is parked in a loop, the guards exercises caution to make sure the total rake has crossed the FM point. This sign is fixed at a distance required at the minimum to ensure sufficient distance of rake from the next track even though... more... Oct 24 2012 (11:42) Blog Post# 560538-44 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:08) BACK TO SIGNALLING AGAIN: ABSOLUTE BLOCK: Absolute block section is probably the most widely used block system type in IR, In simple words a train cannot enter a block till the block is totally free of other trains and can only enter after authorization from the station crew. The authorization can be in form of a Semaphore signal, multi color signal or a token. The block section is usually the total length of track from the foremost controlled signal of the preceding station(usually advanced starter) to the rear most controlled signal of the current station(Usually outer Home). The block starts and ends between these two parts, no other train is allowed in this block once interlocked except in a few cases... more... Oct 24 2012 (12:00) Blog Post# 560538-45 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:08) INTERMEDIATE BLOCK SECTIONS: It is evident that no other train can enter a block when another train is present already, if distance between two stations is very long it may take quite a while for a train to reach the next station keeping the other train waiting. To eliminate such situations intermediate blocks are used dividing a block section into two blocks, this is with the aid of track circuitry. In this case a train waiting at the earlier station can be released right after the earlier one passes the intermediate block thereby optimally utilizing the section. There were a lot of block instruments used earlier including a telephone with a handle(I guess most of you have seen this at some point)... more... Oct 24 2012 (13:59) Blog Post# 560538-48 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:08) FINAL SIGNALLING NOTES: AUTOMATIC BLOCK TERRITORY: Automatic Block territory is a very useful Block type used currently in most cities having a good rail Network. I am sceptical about its existence in Bangalore however it exists in all ways out of SC Jn. I automatic block the presence of a train in a block is detected by track circuitry or by using special track circuits and Axle counters in conjunction. The major difference between this and absolute is that track length between two stations can be divided into multiple number of blocks irrespective... more... Oct 24 2012 (14:56) Blog Post# 560538-54 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:08) 1. Home signal is the signal before say some 300-800 mts before Branches/loops of a station begin, it has arms to indicate which direction/Loop are you being headed to or Mainline Stop or Proceed. 2. In Absolute Block section, Double yellow is at outer home(signal before home), It can either be double yellow, Yellow or green.It means the Following at outer home: Double Yellow--> Home signal is at Yellow, arms pointing to a platform. Yellow-->... more... Oct 24 2012 (14:58) Blog Post# 560538-55 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:10) Oct 24 2012 (15:50) Blog Post# 560538-57 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:10) Oct 24 2012 (22:09) Blog Post# 560538-63 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:10) NOTES ON TRAIN TYPES: There are a few common types of locomotives operated in Indian railways, notes on a few common types of power used: Diesel Locomotives: Almost all the diesel locomotives used in IR are Diesel-Electric ones. This type uses a diesel engine as a prime mover to run the traction alternator which produces AC/DC(conversion) to be fed to the traction motors fitted to the bogies(set of frames on which wheel assembly is mounted) which actually rotate the wheels. As the alternator is rotated by diesel power to produce electricity for the... more... The rail fanning note in this case was a nice reminder to use our brains.Though I experience this often,I never bothered to think why it happens. remember my request to compile all this in pdf and present it to the moderator. God bless you. Oct 25 2012 (07:46) Blog Post# 560538-71 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:09) Oct 25 2012 (09:38) Blog Post# 560538-72 dhooma shakata vahanam Added by: moderator^~ Oct 25 2012 (10:09) |