Indian Railways

From New World Encyclopedia
भारतीय रेल, Indian Railways
File:Indian Railways logo.png
Type Government Owned
Founded April 16, 1853, nationalized in 1951
Headquarters New Delhi, India
Key people Union Railway Minister:
Laloo Prasad Yadav
Minister of State for Railways (V):
R. Velu
Minister of State for Railways (R):
Naranbhai J Rathwa
Chairman, Railway Board:
K.C.Jena.
Area served India
Industry Railways and Locomotives
Products Rail transport, Cargo Transport, Services
Revenue Green Arrow Up Darker.svg INR 1,24,545 Crores (~30.5BUSD)


Employees ~1,400,000
Parent Ministry of Railways (India)
Divisions 16 Railway Zones


Slogan "lifeline of the nation"
Website www.indianrailways.gov.in


Indian Railways (Hindi भारतीय रेल), abbreviated as IR, refers to a Department of the Government of India, under the Ministry of Railways, tasked with operating the rail network in India. A cabinet rank Railways Minister heads the Ministry, while the Railway Board manages the Department. Although a government agency, Indian Railways, of late, has been trying to adopt a corporate management style.

Indian Railways, a total state monopoly on India's rail transport, consititutes one of the largest and busiest rail networks in the world, transporting sixteen million passengers[1] and more than one million tonnes of freight daily.[2] IR stands as the world's largest commercial or utility employer, with more than 1.6 million employees,[3], second only to the Chinese Army in highest number of employees.

The railways traverse the length and breadth of the country; the routes cover a total length of 63,140 km (39,233 miles). As of 2002, IR owned a total of 216,717 wagons, 39,263 coaches and 7,739 locomotives and ran a total of 14,444 trains daily, including about 8,702 passenger trains.[2]

The British first introduced railwaysto India in 1853. By 1947, the year of India's independence, forty-two rail systems crossed the country. In 1951 the government nationalized the system as one unit, becoming one of the largest networks in the world. Indian Railways operates both long distance and suburban rail systems.

History

File:Bombay-Thana-train-1853.png
One of the earliest pictures of railways in India

The British first put a plan for a rail system in India forward first in 1832, but a decade passed withtout action. In 1844, the Governor-General of India Lord Hardinge allowed private entrepreneurs to set up a rail system in India, creating two new railway companies; they asked the East India Company to assist them. Interest from investors in the UK led to the rapid creation of a rail system over the next few years. The first train in India became operational on 1851-12-22, used for hauling construction material in Roorkee. A year and a half later, on 1853-04-16, the first passenger train service began between Bori Bunder, Bombay and Thana. Three locomotives, Sahib, Sindh and Sultan covering the distance of 34 km (21 miles), giving birth of railways in India.

The British government encouraged new railway companies backed by private investors under a scheme that would guarantee an annual return of five percent during the initial years of operation. Once established, the company would be transferred to the government, with the original company retaining operational control. The route mileage of this network totaled about 14,500 km (9,000 miles) by 1880, mostly radiating inward from the three major port cities of Bombay, Madras and Calcutta. By 1895, India had started building its own locomotives, and in 1896 sent engineers and locomotives to help build the Uganda Railway.

Soon various independent kingdoms built their own rail systems and the network spread to the regions that became the modern-day states of Assam, Rajasthan and Andhra Pradesh. A Railway Board constituted in 1901, but the Viceroy, Lord Curzon retained decision-making power. The Railway Board operated under aegis of the Department of Commerce and Industry and had three members: a government railway official serving as chairman, a railway manager from England and an agent of one of the company railways. For the first time in its history, the Railways began to make a tidy profit. In 1907, the government took over almost all the rail companies.

The following year, the first electric locomotive appeared. With the arrival of the First World War, the railways served the needs of the British outside India. By the end of the First World War, the railways had suffered immensely and falling into a poor state. The government took over the management of the Railways and removed the link between the financing of the Railways and other governmental revenues in 1920, a practice that continues to date with a separate railway budget.

The Second World War severely crippled the railways as the British diverted trains to the Middle East, and converted the railway workshops into munitions workshops. At the time of independence in 1947, a large portion of the railways passed to the then newly formed Pakistan. A total of forty-two separate railway systems, including thirty-two lines owned by the former Indian princely states, amalgamated as a single unit, christened as the Indian Railways.

The newly seated India government abandoned the existing rail networks in favor of zones in 1951 and a total of six zones came into being in 1952. As the economy of India improved, almost all railway production units indigenized. By 1985, steam locomotives phased out in favor of diesel and electric locomotives. The entire railway reservation system streamlined with computerisation in 1995.

Railway zones

A schematic map of the Indian Railway network

For administrative purposes, Indian Railways divids into sixteen zones.

No. Name Abbr. Headquarters Date established
1. Northern Railway NR Delhi April 14, 1952
2. North Eastern Railway NER Gorakhpur 1952
3. Northeast Frontier Railway NFR Maligaon(Guwahati) 1958
4. Eastern Railway ER Kolkata April, 1952
5. South Eastern Railway SER Kolkata 1955,
6. South Central Railway SCR Secunderabad October 2, 1966
7. Southern Railway SR Chennai April 14, 1951
8. Central Railway CR Mumbai November 5, 1951
9. Western Railway WR Mumbai November 5, 1951
10. South Western Railway SWR Hubli April 1, 2003
11. North Western Railway NWR Jaipur October 1, 2002
12. West Central Railway WCR Jabalpur April 1, 2003
13. North Central Railway NCR Allahabad April 1, 2003
14. South East Central Railway SECR Bilaspur, CG April 1, 2003
15. East Coast Railway ECoR Bhubaneswar April 1, 2003
16. East Central Railway ECR Hajipur October 1, 2002
17. Konkan Railway† KR Navi Mumbai January 26, 1998

Konkan Railway (KR) operates as a separately incorporated railway, with its headquarters at Belapur CBD (Navi Mumbai), operating under the control of the Railway Ministry and the Railway Board.

Indian Railways ownes and operates the Calcutta Metro, but not a part of any of the zones. Administratively, the railway has the status of a zonal railway. A certain number of divisions make up each zonal railway, each having a divisional headquarters and a total of sixty-seven divisions.

A better schematic Map of Indian Railway Network
Zonal Railway Divisions
Northern Railway Delhi, Ambala, Firozpur, Lucknow, Moradabad
North Eastern Railway Izzatnagar, Lucknow, Varanasi
Northeast Frontier Railway Alipurduar, Katihar, Lumding, Rangia, Tinsukia
Eastern Railway Howrah, Sealdah, Asansol, Malda
South Eastern Railway Adra, Chakradharpur, Kharagpur, Ranchi
South Central Railway Secunderabad, Hyderabad, Guntakal, Guntur, Nanded, Vijayawada
Southern Railway Chennai, Madurai, Palghat, Tiruchchirapalli, Trivandrum, Salem
Central Railway Mumbai, Bhusawal, Pune, Solapur, Nagpur
Western Railway Mumbai Central, Baroda, Ratlam, Ahmedabad, Rajkot, Bhavnagar
South Western Railway Hubli, Bangalore, Mysore
North Western Railway Jaipur, Ajmer, Bikaner, Jodhpur
West Central Railway Jabalpur, Bhopal, Kota
North Central Railway Allahabad, Agra, Jhansi
South East Central Railway Bilaspur, Raipur, Nagpur
East Coast Railway Khurda Road, Sambalpur, Visakhapatnam
East Central Railway Danapur, Dhanbad, Mughalsarai, Samastipur, Sonpur

Passenger services

A long-distance express train

Indian Railways operates 8,702 passenger trains and transports 15 million daily across twenty-five states and three union territories (Delhi, Puducherry (formerly Pondicherry) and Chandigarh). Sikkim, Arunachal Pradesh and Meghalaya are the only states not connected.

The passenger division rates as the most preferred form of long distance transport in most of the country.

A standard passenger train consists of eighteen coaches, but some popular trains can have up to 24 coaches. Coaches have been designed to accommodate between 18 to 72 passengers, but may actually accommodate many more during the holiday seasons and on busy routes. The railways use vestibule coaches, with some of those dummied on some trains for operational reasons. Freight trains use a large variety of wagons.

Each coach has different accommodation class; the most popular being the sleeper class, with typically up to nine of those type coaches coupled. A standard train may have between three and five air-conditioned coaches. Online passenger ticketing, introduced in 2004, may top 100,000 per day by 2008, while ATMs in many stations will be equipped to dispense long-distance tickets by the end of 2007. The management has slated ATMs for installation on board select trains as well.

Production Services

A WAP5 locomotive

The Indian Railways manufactures a lot of its rolling stock and heavy engineering components, largely for economic reasons, as important rail technology comes at a high price. The general state of the national engineering industry as matured over the past century and a half.

The ministry directly manages Production Units, the manufacturing plants of the Indian Railways. The General Managers of the PUs report to the Railway Board. The Production Units are:

  • Central Organization For Railway Electrification, Allahabad
  • Chittaranjan Locomotive Works, Chittaranjan
  • Diesel Locomotive Works, Varanasi
  • Diesel Locomotive Works, Ponmalaipatty, Tiruchirapalli
  • Diesel-Loco Modernisation Works, Patiala
  • Integral Coach Factory, Chennai
  • Rail Coach Factory, Kapurthala
  • Rail Wheel Factory, Bangalore
  • Rail Spring Karkhana, Gwalior
  • Bharat Earth Movers Limited, Bangalore

BEML, although independent of the railways, manufactures coaches for IR, Metro coaches for DMRC, and cars for Bangalore Metro.

Suburban rail

The New Delhi Metro railway

Many cities have their own dedicated suburban networks to cater to commuters. Currently, suburban networks operate in Mumbai (Bombay), Chennai (Madras), Kolkata (Calcutta), Delhi, Hyderabad and Pune. Hyderabad, and Pune lack dedicated suburban tracks but share the tracks with long distance trains. New Delhi, Chennai and Kolkata have their own metro networks, namely the New Delhi Metro, the Chennai MRTS- Mass Rapid Transport System, same as other local EMU suburban service as in Mumbai and Kolkata etc., but with dedicated tracks mostly laid on a flyover and the Kolkata Metro, respectively.

Usually electric multiple units Suburban trains handle commuter traffic. They usually have nine coaches or sometimes twelve to handle rush hour traffic (Hyderabad MMTS; abbreviation for Multi Modal Transport System has mostly six coach train with a single nine coach one). One unit of an EMU train consists of one power car and two general coaches. Thus three units having one power car at each end and one at the middle comprise a nine coach EMU. The rakes in Mumbai run on direct current, while those elsewhere use alternating current ([6]). A standard coach accommodates ninety six seated passengers, but the actual number of passengers can easily double or triple with standees during rush hour. The Kolkata metro has the administrative status of a zonal railway, though in another class from the seventeen railway zones.

The Suburban trains in Mumbai handle more rush then any other suburban network in India. The network has three lines viz, western, central and harbour. Considered the lifeline on Mumbaia Central Lines, the trains start from Chhatrapati Shivaji Terminus (CST) (Formerly Victoria Terminus or VT), running for more than 100 km till Kasara and Western Line. Starting from Churchgate, they run again for more than 100 km till Dahanu Road. Combined, that makes for the longest suburban rail in the world, as well as the busiest suburban network in the world, carrying more than five million passengers each day. On 11 July 2006 terrorist set off six bombs on those trains, targeting the general public.

Freight

A single line rail bridge
The Darjeeling Himalayan Railway is a World Heritage Site, and one of the few places where steam engines are still in operation in India.
A Beyer Garrett 6594 Engine seen at the National Rail Museum

IR carries a huge variety of goods ranging from mineral ores, fertilizers and petrochemicals, agricultural produce, iron & steel, multimodal traffic and others. Ports and major urban areas have their own dedicated freight lines and yards. Many important freight stops have dedicated platforms and independent lines.

Indian Railways makes 70% of its revenues, and most of its profits, from the freight sector, using these profits to cross-subsidise the loss-making passenger sector. Competition from trucks which offer cheaper rates has seen a decrease in freight traffic in recent years. Since the 1990s, Indian Railways has switched from small consignments to larger container movement which has helped speed up its operations. Most of its freight earnings come from such rakes carrying bulk goods such as coal, cement, food grains and iron ore.

Indian Railways also transports vehicles over long distances. Trains haul back trucks that carry goods to a particular location, saving the trucking company fuel expenses. Refrigerated vans run in many areas. The "Green Van" refers to a special type used to transport fresh food and vegetables. Recently Indian Railways introduced the special 'Container Rajdhani' or CONRAJ, for high priority freight. The highest speed notched up for a freight train clocked at 100 km/h (62 mph) for a 4,700 metric ton load.

Recent changes have sought to boost the earnings from freight. The government introduced a privatization scheme recently to improve the performance of freight trains by allowing companies to run their own container trains. The first length of an 11,000 km freight corridor linking India's biggest cities has recently been approved. The railways has increased load limits for the system's 220,000 freight wagons by 11%, legalizing a standard practice. Due to increase in manufacturing transport in India augmented by the rising cost of fuel, transportation by rail has become advantageous financially. New measures such as speeding up the turnaround times have added some 24% to freight revenues.

Notable trains and achievements

The Darjeeling Himalayan Railway, a narrow gauge railway that still regularly uses steam as well as diesel locomotives received UNESCO World Heritage Site classification. The route started earlier at Siliguri and now at New Jalpaiguri in the plains in West Bengal and traverses tea gardens en route to Darjeeling, a hill station at an elevation of 2,134 metres (7,000 ft). Ghum represents the highest station in this route. The Nilgiri Mountain Railway, in the Nilgiri Hills in southern India, the only rack railway in India, also received UNESCO World Heritage Site recognition.[4] The Chatrapati Shivaji Terminus (formerly Victoria Terminus) railway station in Mumbai, operated by Indian Railways, also received World Heritage Site recognition.

The Palace on Wheels is a steam locomotive frequently hauling a train specially designed for promoting tourism in Rajasthan. The Maharashtra government tried to introduce the Deccan Odyssey along the Konkan route, but proved less successful than the Palace on Wheels. The Samjhauta Express runs between India and Pakistan. Hostilities between the two nations in 2001 forced the closing of the line, reopening when the hostilities subsided in 2004. The Thar Express, connecting Khokhrapar (Pakistan) and Munabao (India) restarted operations on February 18, 2006, closing after the 1965 Indo-Pak war. The Kalka Shimla Railway until recently held the Guinness Book of World Records for offering the steepest rise in altitude in the space of 96 kilometres.[5]

The Lifeline Express, a special train popularly known as the "Hospital-on-Wheels", provides healthcare to the rural areas. That train has a carriage that serves as an operating room, a second one serving as a storeroom and an additional two that serve as a patient ward. The train travels around the country, staying at a location for about two months before moving elsewhere.

Among the famous locomotives, the Fairy Queen constitutes the oldest running locomotive on the mainline (though only for specials) in the world today, though the distinction of the oldest surviving locomotive that has recently seen service belongs to John Bull. Kharagpur railway station also has the distinction of being the world's longest railway platform at 1072 m (3,517 ft). The Ghum station along the Darjeeling Toy Train route rates as the second highest railway station in the world reached by a steam locomotive.[6] Indian Railways operates 7,566 locomotives; 37,840 Coaching vehicles and 222,147 freight wagons, operates a total of 6,853 stations, 300 yards, 2,300 goods-sheds, 700 repair shops and a total workforce of 1.54 million.[7]

Ib wins the title for shortest named station, while Sri Venkatanarasimharajuvaripeta has the longest name. The Himsagar Express, between Kanyakumari and Jammu Tawi, has the longest run in terms of distance and time on Indian Railways network, covering 3,745 km (2,327 miles) in about 74 hours and 55 minutes. The Trivandrum Rajdhani, between Delhi's Nizamuddin Station and Trivandrum, travels non-stop between Vadodara and Kota, covering a distance of 528 km (328 miles) in about 6.5 hours, and has the longest continuous run on Indian Railways today. The Bhopal Shatabdi Express, the fastest train in India today, clocks a maximum speed of 140 km/h (87 mph) on the Faridabad-Agra section. 184 km/h (114 mph) in 2000 during test runs represents the fastest speed attained by any train, a speed much lower than fast trains in other parts of the world. The low top speed in India may come from the existing tracks designed for lower speeds.

Organisational structure

File:DSC00088.JPG
The headquarters of the Indian Railways in Delhi

Indian Railways is a department of the Government, being owned and controlled by the Government of India, via the Ministry of Railways rather than a private company. As of 2007, the Railway Ministry is currently headed by Laloo Prasad Yadav, the Union Minister for Railways and assisted by two junior Ministers of State for Railways, R. Velu and Naranbhai J. Rathwa. Indian Railways is administered by the Railway Board, which has six members and a chairman.

Each of the sixteen zones is headed by a General Manager (GM) who reports directly to the Railway Board. The zones are further divided into divisions under the control of Divisional Railway Managers (DRM). The divisional officers of engineering, mechanical, electrical, signal & telecommunication, accounts, personnel, operating, commercial and safety branches report to the respective Divisional Manager and are in charge of operation and maintenance of assets. Further down the hierarchy tree are the Station Masters who control individual stations and the train movement through the track territory under their stations' administration. In addition to the zones, the six production units (PUs) are each headed by a General Manager (GM), who also reports directly to the Railway Board.

In addition to this the Central Organisation for Railway Electrification (CORE), Metro Railway, Calcutta and construction organisation of N F Railway are also headed by a General Manager. CORE is located at Allahabad. This organisation undertakes electrification projects of Indian Railway and monitors the progress of various electrification projects all over the country.

Apart from these zones and production units, a number of Public Sector Undertakings (PSU) are under the administrative control of the ministry of railways. These PSU units are:

  1. Dedicated Freight Corridor Corporation of India
  2. Indian Railways Catering and Tourism Corporation
  3. Konkan Railway Corporation
  4. Indian Railway Finance Corporation
  5. Mumbai Rail Vikas Corporation
  6. Railtel Corporation of India – Telecommunication Networks
  7. RITES Ltd. – Consulting Division of Indian Railways
  8. IRCON International Ltd. – Construction Division
  9. Rail Vikas Nigam Limited
  10. Container Corporation Limited

Centre for Railway Information Systems is an autonomous society under Railway Board, which is responsible for developing the major software required by Indian Railways for its operations.

Rail budget and finances

A sample ticket; fares on the network are among the cheapest in the world.

The Railway Budget deals with the induction and improvement of existing trains and routes, the modernisation and most importantly the tariff for freight and passenger travel. The Parliament discusses the policies and allocations proposed in the budget. The budget needs to be passed by a simple majority in the Lok Sabha (India's Lower House). The comments of the Rajya Sabha (Upper House) are non binding. Indian Railways are subject to the same audit control as other government revenue and expenditures. Based on the anticipated traffic and the projected tariff, the level of resources required for railway's capital and revenue expenditure is worked out. While the revenue expenditure is met entirely by railways itself, the shortfall in the capital (plan) expenditure is met partly from borrowings (raised by Indian Railway Finance Corporation) and the rest from Budgetory support from the Central Government. Indian Railways pays dividend to the Central Government for the capital invested by the Central Government.

As per the Separation Convention (on the recommendations of the Acworth Committee), 1924, the Railway Budget is presented to the Parliament by the Union Railway Minister, two days prior to the General Budget, usually around 26 February. Though the Railway Budget is separately presented to the Parliament, the figures relating to the receipt and expenditure of the Railways are also shown in the General Budget, since they are a part and parcel of the total receipts and expenditure of the Government of India. This document serves as a balance sheet of operations of the Railways during the previous year and lists out plans for expansion for the current year.

File:GntBridgeConstruct.jpg
A 'Rail Over Bridge' under construction in Guntur Division.

The formation of policy and overall control of the railways is vested in Railway Board comprising the Chairman, Financial Commissioner and other functional Members for Traffic, Engineering, Mechanical, Electrical and Staff matters. As per the 2006 budget, Indian Railways earned Rs. 54,600 crores[8] (Rs. 546,000 million or US$12,300 million). Freight earnings increased by 10% from Rs. 30,450 cr (US$7,000 million) in the previous year. Passenger earnings, other coaching earnings and sundry other earnings increased by 7%, 19% and 56% respectively over previous year. Its year end fund balance is expected to stand at Rs. 11,280 cr (2.54 billion US$).[9]

Around 20% of the passenger revenue is earned from the upper class segments of the passenger segment (the air-conditioned classes). The overall passenger traffic grew 7.5% in the previous year. In the first two months of India's fiscal year 2005–06 (April and May), the Railways registered a 10% growth in passenger traffic, and a 12% in passenger earnings.[10]

A new concern faced by Indian Railways is competition from low cost airlines that has recently made its début in India. In a cost cutting move, the Railways plans to minimise unwanted cessations, and scrap unpopular routes.

Current problems

Level crossings like these usually see a high accident rate

Indian railways suffers from deteriorating finances and lack the funds for future investment. Last year, India spent $28 billion, or 3.6% of GDP, on infrastructure. The main problem plaguing the Railways is the high accident rate which stands at about three hundred[11] a year. Although accidents such as derailment and collisions are less common in recent times, many are run over by trains, especially in crowded areas. Indian Railways have accepted the fact that given the size of operations, eliminating accidents is an unrealistic goal, and at best they can only minimize the accident rate. Human error is the primary cause (83%)[12] blamed for mishaps. The Konkan Railway route suffers from landslides in the monsoon season, which has caused fatal accidents in the recent past.

Contributing to the Railways' problems are the antiquated communication, safety and signaling equipment. One area of upgrading badly required is an automated signaling system to prevent crashes. A number of train accidents happened due to a manual system of signals between stations. However, the changeover to a new system would require a substantial investment. It is felt that this would be required given the gradual increase in train speeds and lengths, that would make accidents more dangerous. In the latest instances of signaling control by means of interlinked stations (e.g., Chennai - Washermanpet), failure-detection circuits are provided for each track circuit and signal circuit with notification to the signal control centres in case of problems.[13] However, this is available in a very small subset of the total Railways.

Aging colonial-era bridges and century-old tracks also require regular maintenance and upgrading. In recent years Indian Railways has claimed that it has achieved a financial turnaround, with (unaudited) operating profits expected to improve by 83.7%.[14] Credit for this achievement has been claimed by current Indian Railway Minister, Mr Lalu Prasad Yadav who claims to have brought a significant improvement in operating efficiency of goods traffic after he took over as Railway Minister in May 2004.[15]

The Rajdhani Express and Shatabadi Express are the fastest and most luxurious trains of Indian Railways, though they face increasing pressure from air travel, as the trains travel only 80 km per hour (c.f. Fastest trains in India) and their food and service is not competitive.[16] To modernize Indian Rail and to bring it at par with the developed world, would require a massive investment of about US$100 billion.[17]

Sixth Pay Commission has been constituted in India to review the pay structure of the Government employees and its recommendations are expected by the end of 2008 and based on its recommendations, the salaries of all Railways officers and staff are expected to be revised with retrospective effect (w.e.f. January 01, 2006). If previous Pay Commissions are taken as indicator then this revision will not be less than 50% upwards and it may hit Railways bottomlines severely and possibly mitigate all the good work of the Railways.

Sanitation and the use of modern technology in that area has been a problem, but starting in 2007 chemically-treated 'green toilets', developed by IIT Kanpur, will be introduced throughout the system, trains and stations alike. This makeover is expected to take three years and cost billions.

Plans to upgrade stations, coaches, security, and services are on track.[18] Twenty-two of the largest stations are due for an overhaul when a private company is picked for the job. New LHB German coaches, manufactured in India, were scheduled to be introduced in 2007 on the daily run of the prestigious East Central Railway (ECR) Patna-New Delhi Radjhani Express. These coaches will enhance the safety and riding comfort of passengers, and in time will eventually replace thousands of old model coaches throughout Indian Railways. Three new manufacturing units will be set up to produce state-of-the-art locomotives and coaches. Channel music, TV screens showing the latest films, and optional menus from five-star hotels are soon to be introduced on the Rajdhani and Shatabdi Express. Base kitchens and food services across the system are also slated for a makeover, while ATMs will be introduced on select trains as well. More importantly, a whole new IT management infrastructure will be developed to better handle ticketing, freight, rolling stock (wagons), terminals, and rail traffic, including the use of Global Positioning System (GPS) for train tracking in real time.

See also

  • Fastest trains in India
  • Indian locomotives
  • Railways cricket team

Notes

  1. Indian railways chug into the future
  2. 2.0 2.1 Salient Features of Indian Railways. Figures as of 2002.
  3. Guinness Book of World Records-2005, pg 93
  4. The Hindu newspaper online
  5. Article in The Tribune
  6. Indian Railways Site
  7. Indian Railways stats
  8. Indian numbering system. 1 crore = 10,000,000
  9. Highlights of Rail Budget 2006-07. (1 USD = 44.36 INR as of 2006-02-27).
  10. Times of India
  11. Rail Budget 2005
  12. Frontline magazine online, Amulya Gopalakrishnan, Volume 20–Issue 15, July 19– August 01, 2003
  13. Indian Railways Signaling System, Indian Railways Signaling Systems
  14. [1]
  15. [2]
  16. [3]
  17. [4]
  18. [5]

References
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