Transport, Communication and International Trade — India

A country as large as India holds together through its networks: roads and railways across the plains and plateaus, waterways and sea routes along its coasts, air links over long distances, pipelines for oil and gas, and communication that now reaches almost every village. This chapter covers each mode in turn, then India’s international trade and the seaports and airports through which it flows. Questions pair a corridor with its end-points, a waterway with its stretch, or a port with the one feature it is known for.

Roads

Classification of roads by who builds and maintains them
TypeBuilt and maintained by / purpose
National HighwaysThe Central Government; they link state capitals, major cities and ports. The National Highways Authority of India (NHAI), operational since 1995, develops and maintains them
State HighwaysState governments; link state capitals with district headquarters
District roadsLink district headquarters with other places in the district
Rural roadsLink villages; the Pradhan Mantri Grameen Sadak Yojana aims to connect every village to a major town by an all-season road
Border roadsBuilt by the Border Roads Organisation (set up in 1960) in strategic, difficult terrain along the borders

The Golden Quadrilateral links the four metropolitan cities — Delhi, Mumbai, Chennai and Kolkata — with high-speed highways. The North–South corridor joins Srinagar in Jammu and Kashmir with Kanniyakumari in Tamil Nadu, and the East–West corridor joins Silchar in Assam with Porbandar in Gujarat; the two corridors cross at Jhansi.

Railways, Waterways, Air and Pipelines

The first train in India ran in 1853 from Bombay to Thane, a distance of 34 km. Indian Railways is one of the largest railway networks in the world. Three gauges were built: broad gauge (1.676 m), metre gauge (1 m) and narrow gauge (0.762 m or 0.610 m), and lines are being converted to broad gauge. The Konkan Railway, completed in 1998, runs about 760 km from Roha in Maharashtra to Mangaluru in Karnataka through Maharashtra, Goa and Karnataka, crossing many rivers and tunnelling through the Western Ghats — an engineering achievement in very difficult terrain.

The first three National Waterways
WaterwayStretchRiver or canal
NW-1Haldia — Prayagraj (about 1,620 km)Ganga–Bhagirathi–Hugli river system
NW-2Sadiya — Dhubri (about 891 km)Brahmaputra river
NW-3Kottapuram — Kollam (about 205 km)West Coast Canal in Kerala, with the Champakkara and Udyogmandal canals
  • Under the National Waterways Act, 2016, 111 waterways were declared national waterways, most still to be developed.
  • Air transport was nationalised in 1953. Air India provides international services; Pawan Hans provides helicopter services, especially in hilly areas and to offshore oil installations.
  • Pipelines carry crude oil, petroleum products and natural gas: from the Naharkatiya oilfield in Assam towards Guwahati and Barauni; from Salaya in Gujarat to Jalandhar in Punjab via Viramgam, Mathura and Delhi; and the Hazira–Vijaipur–Jagdishpur (HVJ) gas pipeline.

Communication Networks

Communication is personal — the postal service, telephone and internet — or mass — radio, television, newspapers and films. Radio broadcasting began in India in 1923 with the Radio Club of Bombay, and television in 1959 in Delhi. Satellites are of two kinds by purpose: the Indian National Satellite System (INSAT), set up in 1983, is a multi-purpose system for telecommunications, meteorology and broadcasting; the Indian Remote Sensing (IRS) satellites, the first of which, IRS-1A, was launched in 1988, collect data for resource management — agriculture, forests, water, minerals and disaster monitoring.

🧠 INSAT talks; IRS watches
INSAT carries communication, weather and broadcasting — it talks. IRS observes the earth to map resources — it watches. A question about crop estimation or forest mapping points to IRS; one about television or weather forecasting points to INSAT.

International Trade, Seaports and Airports

The composition of India’s trade has changed. On the export side, the share of agricultural and allied products has declined while manufactured goods, engineering goods, chemicals, gems and jewellery and services have grown in importance. On the import side, crude petroleum and its products form a major share, along with machinery, fertilisers, pearls and precious stones, and electronic goods. India trades with countries across the world, and most of this trade by volume moves by sea.

Major seaports and the feature each is known for
PortKnown for
Kandla (Deendayal Port), GujaratA tidal port developed after Partition to make up for the loss of Karachi to Pakistan and to serve the north-west
MumbaiA natural harbour and India’s biggest port
Jawaharlal Nehru Port (Nhava Sheva)Developed to relieve the pressure on Mumbai port
Marmagao, GoaIron ore exports from Goa
New Mangalore, KarnatakaIron ore from the Kudremukh mines
Kochi, KeralaA natural harbour at the head of the Vembanad Kayal (lagoon)
Kolkata, West BengalA riverine port on the Hugli, about 128 km inland, troubled by silting
Haldia, West BengalDeveloped downstream to relieve congestion at Kolkata
Paradip, OdishaA deep harbour suited to very large vessels; exports iron ore
Visakhapatnam, Andhra PradeshThe deepest landlocked and well-protected port
Chennai, Tamil NaduOne of the oldest artificial ports on the east coast; Ennore was built nearby to relieve it
⚠️ Relief ports — which port relieves which
Three pairs are built on the same idea: Jawaharlal Nehru Port relieves Mumbai, Haldia relieves Kolkata, and Ennore relieves Chennai. Kandla is different — it was built to replace Karachi, not to relieve another Indian port.

Key takeaways

  • National Highways are the Central Government’s (developed by NHAI); border roads are built by the Border Roads Organisation.
  • Golden Quadrilateral: Delhi–Mumbai–Chennai–Kolkata; North–South: Srinagar–Kanniyakumari; East–West: Silchar–Porbandar; they cross at Jhansi.
  • First train: 1853, Bombay to Thane, 34 km. Gauges: broad 1.676 m, metre 1 m, narrow 0.762 or 0.610 m. Konkan Railway: Roha–Mangaluru.
  • NW-1: Haldia–Prayagraj (Ganga); NW-2: Sadiya–Dhubri (Brahmaputra); NW-3: Kottapuram–Kollam (West Coast Canal).
  • INSAT (1983) serves communication, weather and broadcasting; IRS (IRS-1A, 1988) serves resource monitoring.
  • Exports have shifted from agricultural goods towards manufactures and services; petroleum dominates imports.
  • Kandla replaced Karachi; JNPT relieves Mumbai, Haldia relieves Kolkata, Ennore relieves Chennai; Visakhapatnam is the deepest landlocked port; Kochi sits at the head of the Vembanad Kayal.

Practice questions (8)

Attempt each one before opening the answer. Every explanation names the tempting wrong option as well as the right one, because that is where marks are lost.

  1. The first railway train in India ran in 1853 between:

    1. Howrah and Hugli
    2. Bombay and Thane
    3. Madras and Arcot
    4. Delhi and Agra
    Show answer

    Answer: B — Bombay and Thane

    India’s first passenger train ran in 1853 from Bombay to Thane, a distance of 34 km. Lines such as Howrah–Hugli and Madras–Arcot followed in the next few years, which is why they appear as tempting distractors, and Delhi–Agra was not the first line at all.

  2. The East–West corridor of India’s national highway network connects:

    1. Delhi and Kolkata
    2. Mumbai and Chennai
    3. Srinagar and Kanniyakumari
    4. Silchar and Porbandar
    Show answer

    Answer: D — Silchar and Porbandar

    The East–West corridor runs from Silchar in Assam to Porbandar in Gujarat. Srinagar to Kanniyakumari is the North–South corridor, the two crossing at Jhansi, while Delhi–Kolkata and Mumbai–Chennai are sides of the Golden Quadrilateral rather than either corridor.

  3. National Waterway 1 is the stretch of the Ganga–Bhagirathi–Hugli system between:

    1. Haldia and Prayagraj
    2. Sadiya and Dhubri
    3. Kottapuram and Kollam
    4. Kolkata and Patna only
    Show answer

    Answer: A — Haldia and Prayagraj

    NW-1 runs about 1,620 km on the Ganga–Bhagirathi–Hugli from Haldia to Prayagraj. Sadiya–Dhubri is NW-2 on the Brahmaputra, Kottapuram–Kollam is NW-3 on Kerala’s West Coast Canal, and Kolkata and Patna lie within NW-1 rather than marking its ends.

  4. The Konkan Railway, completed in 1998, runs from Roha to Mangaluru through which three states?

    1. Gujarat, Maharashtra and Goa
    2. Maharashtra, Karnataka and Kerala
    3. Maharashtra, Goa and Karnataka
    4. Goa, Karnataka and Kerala
    Show answer

    Answer: C — Maharashtra, Goa and Karnataka

    Roha is in Maharashtra and Mangaluru in Karnataka, and between them the line passes through Goa, so its three states are Maharashtra, Goa and Karnataka. Gujarat lies north of Roha and Kerala south of Mangaluru, so any option that includes either goes beyond the line’s end-points.

  5. Match List-I (port) with List-II (feature):
    List-I: A. Kandla B. Marmagao C. Kochi D. Visakhapatnam
    List-II: I. Iron ore exports from Goa II. The deepest landlocked and well-protected port III. A tidal port built after Partition to make up for the loss of Karachi IV. A natural harbour at the head of the Vembanad Kayal

    1. A-III, B-IV, C-I, D-II
    2. A-I, B-III, C-IV, D-II
    3. A-III, B-I, C-IV, D-II
    4. A-III, B-I, C-II, D-IV
    Show answer

    Answer: C — A-III, B-I, C-IV, D-II

    Kandla is the tidal port built after Partition to replace Karachi, Marmagao exports Goa’s iron ore, Kochi is the natural harbour at the head of the Vembanad Kayal, and Visakhapatnam is the deepest landlocked, well-protected port. The near-miss codes swap the two west-coast features of Marmagao and Kochi, or move Visakhapatnam’s landlocked harbour to Kochi.

  6. Haldia port was developed mainly to:

    1. relieve congestion at Kolkata, a riverine port troubled by silting
    2. export iron ore from the mines of Goa
    3. handle crude oil from the Mumbai High offshore field
    4. replace Karachi, which went to Pakistan at the time of Partition
    Show answer

    Answer: A — relieve congestion at Kolkata, a riverine port troubled by silting

    Kolkata is a riverine port on the Hugli, far inland and troubled by silting, so Haldia was developed downstream to relieve the congestion. Replacing Karachi was the purpose of Kandla, Goa’s iron ore goes through Marmagao, and Mumbai High’s oil is handled on the west coast, not at Haldia.

  7. Assertion (A): Mumbai is a natural harbour and the biggest port of India.
    Reason (R): Jawaharlal Nehru Port at Nhava Sheva was developed to relieve the pressure on Mumbai port.

    1. Both A and R are true, and R is the correct explanation of A
    2. Both A and R are true, but R is not the correct explanation of A
    3. A is true, but R is false
    4. A is false, but R is true
    Show answer

    Answer: B — Both A and R are true, but R is not the correct explanation of A

    Both statements are true, but R does not explain A. Mumbai is a natural harbour and a large port because of its sheltered site and productive hinterland; the building of Jawaharlal Nehru Port is a consequence of Mumbai’s heavy traffic, not the reason Mumbai is a natural harbour or the biggest port.

  8. Consider the following statements about India’s communication satellites and networks:
    A. INSAT is a multi-purpose system serving telecommunications, meteorology and broadcasting.
    B. IRS satellites collect data used for managing resources such as forests, water and agriculture.
    C. Radio broadcasting in India began only after television, in the 1960s.
    D. The postal service is a form of mass communication rather than personal communication.
    Choose the correct answer from the options given below:

    1. A, B and C only
    2. B and D only
    3. A, C and D only
    4. A and B only
    Show answer

    Answer: D — A and B only

    A and B are true: INSAT carries communication, weather and broadcasting services, and IRS satellites observe the earth for resource management. C is false — radio began in 1923, long before television arrived in Delhi in 1959 — and D is false, since the postal service is personal communication, while radio, television and newspapers are mass communication.