Infrastructural Resources (Development of Transport and Communication) | ISC Class 12 Geography Notes

This note covers the development of transport infrastructure in India (roadways, railways, inland and coastal water transport, air transport and pipelines), the factors governing the distribution, density and growth of each mode, the present position and the areas well and poorly served by each, their problems and advantages, the national goals of the Golden Quadrilateral and the North-South and East-West corridors, the major trading ports of Mumbai, Chennai, Kolkata and Kochi with the distinction between harbour and port and natural and artificial harbours, international trading patterns and products of recent years, and the importance of communication in rural and urban development, its policy, and the modern means of communication, including the difference between mass communication and telecommunication.

What factors govern the distribution, density and growth of transport in India?

Transport exists because production and consumption rarely happen at the same place. Goods, people and ideas must be moved from the site of production or availability to the place where they are needed.

In India, the density and growth of a transport network are shaped by the terrain, the level of economic development of a region, the demand for movement of goods and people, and government planning.

Pathways and unmetalled roads have been used since ancient times, but metalled roads and railways developed with economic and technological growth, and ropeways, cableways and pipelines were devised for specific goods under special circumstances.

Roads continue to concentrate in and around urban centres, while rural and remote areas, especially hilly, plateau and forested tracts, have the least connectivity.

The railway network is relatively less dense in the hill states, the north-eastern states, the central parts of India and Rajasthan, again reflecting terrain and the historical pattern of colonial-era construction, which favoured raw-material-producing areas, plantation tracts, hill stations and cantonment towns.

Each mode also has factors of its own. Inland water transport needs rivers and canals that are navigable through the year, with enough depth, a gentle gradient and little silting, so it is concentrated on the Ganga-Bhagirathi-Hooghly (National Waterway 1), the Brahmaputra (National Waterway 2) and the West Coast Canal of Kerala (National Waterway 3). Coastal shipping depends on harbours and on the goods produced in the hinterland of each port.

Air transport grows where speed matters over long distances or difficult terrain, as in the north-east and the island territories, and where business and tourist demand can pay its high cost; government schemes such as the regional connectivity scheme UDAN (2016) have extended it to smaller towns. Pipelines follow the location of oil and gas fields, refineries and markets: they carry liquids and gas in bulk over long distances at a low running cost once their high initial cost is paid, as in the Naharkatia-Barauni oil pipeline and the Hazira-Bijaipur-Jagdishpur gas pipeline.

A flowchart titled "Means of transport" branches into Land, Water and Air. Land branches further into Road, Pipeline and Railway. Water branches into Inland and Seaways and Oceanic route. Air branches into National and International.

How developed is India's road network?

India has one of the second largest road networks in the world, with a total length of about 62.16 lakh km. Pathways and unmetalled roads existed from ancient times;

Sher Shah Suri built the Shahi (Royal) road from the Indus Valley to the Sonar Valley in Bengal, which was renamed the Grand Trunk (GT) road during British rule, connecting Calcutta and Peshawar, and at present extends from Amritsar to Kolkata.

The first serious modern attempt to plan roads was the Nagpur Plan of 1943, which could not be implemented owing to lack of coordination between the princely states and British India.

After Independence, a twenty-year road plan was introduced in 1961 to improve road conditions.

For construction and maintenance, roads are classified as National Highways, State Highways, Major District Roads and Rural Roads. About 85 per cent of passenger and 70 per cent of freight traffic are carried by roads every year, and road transport is relatively suitable for shorter-distance travel.

National Highways

National Highways are the main roads constructed and maintained by the Central Government, meant for inter-state transport and the movement of defence personnel and material in strategic areas; they also connect state capitals, major cities, important ports and railway junctions.

National Highways have grown from 19,700 km in 1951 to 1,36,440 km. They form only about 2 per cent of total road length but carry 40 per cent of road traffic.

The National Highways Authority of India (NHAI), operationalised in 1995 as an autonomous body under the Ministry of Surface Transport, is responsible for the development, maintenance and operation of National Highways.

State Highways, district roads and rural roads

State Highways are constructed and maintained by state governments, joining state capitals with district headquarters and other important towns, and are connected to the National Highways. District roads link district headquarters with other important nodes in the district.

Rural roads are vital links in rural areas; about 80 per cent of total road length in India falls in this category, and there is regional variation in rural road density because it is influenced by the nature of the terrain, with quality deteriorating away from urban centres.

Other roads and border roads

Other roads include Border Roads and International Highways. The Border Roads Organisation (BRO), established in May 1960, accelerates economic development and strengthens defence preparedness through coordinated improvement of strategically important roads along the northern and north-eastern boundary.

It has constructed roads in high-altitude mountainous terrain joining Chandigarh with Manali and Leh, at an average altitude of 4,270 metres above mean sea level.

International Highways promote harmonious relations with neighbouring countries, as with the Delhi-Lahore bus service across the Wagah border and the Aman Setu between Baramula and Muzaffarabad.

A bus with "LAHORE DELHI" written on its front panel at the Wagah border checkpoint, and a crowd gathered at the Aman Setu arch between Baramula and Muzaffarabad.

Reference: Fig. 7.4 and Fig. 7.5

Advantages and problems of road transport

The advantages of roads are that they carry the largest share of passenger and freight traffic, about 85 per cent of passengers and 70 per cent of freight every year, and are relatively suitable for shorter-distance travel. They provide door-to-door service and act as feeders to railways and ports.

The problems are that roads concentrate in and around urban centres, so rural and remote areas have the least connectivity; rural road density is very low in hilly, plateau and forested areas, and the quality of rural roads deteriorates away from urban centres. National Highways form only about 2 per cent of road length, so most traffic runs on weaker roads.

What national goals have guided highway development: the Golden Quadrilateral and the North-South and East-West corridors?

NHAI has undertaken major national development projects. The Golden Quadrilateral comprises the construction of a 5,846-km long, 4/6-lane, high-density traffic corridor connecting India's four big metro cities of Delhi, Mumbai, Chennai and Kolkata; it is intended to considerably minimise the time, distance and cost of movement among these mega cities.

The North-South Corridor aims to connect Srinagar in Jammu and Kashmir with Kanniyakumari in Tamil Nadu (including the Cochin-Salem Spur) over a 4,076-km road.

The East-West Corridor connects Silchar in Assam with the port town of Porbandar in Gujarat over a 3,640-km road length.

These corridors are national goals of road development: they are expected to carry the majority of freight traffic on roads and to decongest city traffic through ring roads, bypasses and elevated corridors.

On an outline map of India, mark Delhi, Mumbai, Chennai and Kolkata and join them to show the Golden Quadrilateral; mark Srinagar and Kanniyakumari joined through the Cochin-Salem Spur for the North-South Corridor; and mark Silchar and Porbandar for the East-West Corridor.

How has the railway network developed, and what are its present problems and advantages?

Indian Railways, introduced in 1853 with a line from Bombay to Thane covering 34 km, is one of the longest railway networks in the world and is the largest government undertaking in the country.

By the Railway Yearbook 2019-20, its length was 67,956 km. Its very large size puts pressure on centralised management, so the system has been divided into 17 zones.

Narrow gauge is generally confined to hilly areas. Indian Railways has an extensive programme to convert metre and narrow gauges to broad gauge, and steam engines have been replaced by diesel and electric engines, raising speed and haulage capacity while also improving the environment at stations.

Metro rail has revolutionised urban transport, and the replacement of diesel buses by CNG vehicles, together with metro rail, helps control urban air pollution.

Mahatma Gandhi said that the Indian railways "...brought people of diverse cultures together to contribute to India's freedom struggle." Areas around towns, raw-material-producing areas, plantation and commercial crop tracts, hill stations and cantonment towns were well connected by railways from the British colonial era, mostly for resource exploitation; after Independence, routes have been extended to other areas.

One significant development has been the Konkan Railway, a 760-km route built in 1998 connecting Roha in Maharashtra to Mangaluru in Karnataka, crossing 146 rivers and streams, nearly 2,000 bridges and 91 tunnels, including Asia's largest tunnel of nearly 6.5 km; Maharashtra, Goa and Karnataka are partners in this undertaking.

Advantages and problems of rail transport

The advantages are that railways carry both freight and passengers, contribute to the growth of the economy, and remain the main means of transport for the masses. They move large volumes over long distances, and the shift from steam to diesel and electric engines has raised speed and haulage capacity.

The problems are that the very large size of the network puts pressure on a centralised management system, and the network is relatively less dense in the hill states, the north-eastern states, the central parts of India and Rajasthan. Metre and narrow gauge lines still survive and are being converted to broad gauge.

What is the role of inland and coastal water transport?

Water transport is of two types: inland waterways and oceanic (coastal) waterways. It is the cheapest, a fuel-efficient and eco-friendly mode, and is most suitable for carrying heavy and bulky material.

Inland waterways

Inland waterways were the chief mode of transport before railways but faced tough competition from road and rail transport, and diversion of river water for irrigation has made large stretches non-navigable.

India has 14,500 km of navigable waterways, comprising rivers, canals, backwaters and creeks, contributing about 1 per cent to the country's transportation.

The Inland Waterways Authority was set up in 1986 for the development, maintenance and regulation of national waterways; the National Waterways Act, 2016, declared 111 inland waterways (including five earlier declared national waterways) as National Waterways.

A map of the west coast showing the Arabian Sea and the National Waterway No. 3 route through Kottapuram, the Periyar river, Udyogamandal canal, Champakkara canal, Ernakulam, Vembanad Lake, Alappuzha, Kayamkulam Kayal and Kollam, with distances marked: Kottapuram-Kochi 0-30 km, Kochi-Alappuzha 30-92 km, Alappuzha-Kollam 92-168 km, Champakkara canal 14 km and Udyogmandal canal 23 km, totalling 205 km.

Reference: Fig. 7.7

The backwaters (Kayal) of Kerala are of special significance, providing cheap transport and attracting tourists; the Nehru Trophy Boat Race (Vallamkali) is held there. The Inland Waterways Authority has also identified ten other inland waterways that could be upgraded.

Oceanic (coastal) waterways

India has a coastline of approximately 7,517 km, including islands, served by twelve major and 200 minor ports.

Oceanic routes are vital to India's economy: approximately 95 per cent of India's foreign trade by volume and 70 per cent by value moves through ocean routes.

Besides international trade, these routes also carry traffic between the islands and the rest of the country.

Advantages and problems of water transport

The advantages are that water transport is the cheapest means of transport, is fuel-efficient and eco-friendly, and is most suitable for carrying heavy and bulky material. Oceanic routes carry about 95 per cent of India's foreign trade by volume and 70 per cent by value.

The problems are that inland waterways faced tough competition from road and rail, and diversion of river water for irrigation made them non-navigable in large parts of their courses; inland waterways contribute only about 1 per cent to the country's transportation.

Areas well and poorly served by water transport

Water transport is well served along the Ganga between Prayagraj and Haldia, on the Brahmaputra between Sadiya and Dhubri, on the west coast canal between Kottapuram and Kollam, and on the Godavari, Krishna, Brahmani and Mahanadi delta channels. The Kerala backwaters are especially well served.

It is poorly served in the interior uplands and in stretches of rivers diverted for irrigation, which have become non-navigable.

What are India's major trading ports, and how do harbour and port differ?

A harbour is a sheltered stretch of coastal water that provides safe anchorage for ships from winds, waves and currents.

A port is a harbour equipped with docks, cranes, warehouses and other infrastructure for the loading and unloading of cargo and passengers; every port is built on a harbour, but not every harbour is developed into a port.

A natural harbour is formed by natural coastal features such as a deep bay or an estuary, for example Mumbai and Kochi; an artificial harbour is created by engineering works such as breakwaters and dredged channels where the natural coast does not provide shelter, for example Chennai.

• Mumbai has a large natural harbour on a deep indentation of the Arabian Sea coast; it is India's leading port, handling petroleum, machinery, chemicals and general cargo.
• Chennai is one of India's oldest artificial harbours on the east coast, built because the Coromandel coast has no natural indentation; it handles automobiles, petroleum products and general cargo.
• Kolkata (with its outport Haldia) is a riverine port on the Hooghly river, requiring continuous dredging to keep the channel navigable; it handles jute, tea, coal and general cargo for the eastern hinterland.
• Kochi is a natural harbour on the Malabar coast of Kerala, sheltered by a backwater lagoon; it handles petroleum, spices and seafood exports.

What are the main exports and imports of each major port?

The location and advantage of each port are given above; its trade follows its hinterland.

• Mumbai: imports crude oil and petroleum products, machinery, chemicals and fertilisers; exports cotton textiles, engineering goods, chemicals and leather goods from the industrial belt of Maharashtra and Gujarat.
• Chennai: imports crude oil, fertilisers and machinery; exports automobiles, leather goods, granite and engineering goods from Tamil Nadu and its neighbours.
• Kolkata-Haldia: imports crude oil and coking coal (mostly at Haldia) and machinery; exports jute goods, tea, iron and steel and engineering goods from the eastern hinterland.
• Kochi: imports crude oil for the Kochi refinery, fertilisers and chemicals; exports spices, tea, coffee, coir products, cashew and seafood from Kerala and its neighbours.

What affects the nature and direction of trade from the ports?

The nature and direction of trade from a port are affected by the port's hinterland and the goods produced there, the depth of water and need for dredging, distance from major shipping routes, and connectivity by rail and road to the interior.

Over recent years, India's trade through its ports has continued to be dominated by petroleum products, machinery, chemicals and consumer goods as imports, with engineering goods, textiles, agricultural produce and marine products among the main exports.

Why is air transport important in India?

Air transport is the fastest means of movement, reducing distances by minimising travel time; it is essential for a vast country like India, where distances are large and the terrain and climatic conditions are diverse.

Air transport began in 1911 with airmail operations over a distance of 10 km between Prayagraj and Naini, but its real development took place in the post-Independence period.

The Airport Authority of India provides safe, efficient air traffic and aeronautical communication services in Indian airspace.

UDAN (Ude Desh ka Aam Nagrik) is described as a first-of-its-kind scheme globally, designed to jump-start the regional aviation market.

The Regional Connectivity Scheme (RCS)-UDAN, conceived by the Ministry of Civil Aviation, promotes regional connectivity by making flying affordable for the common citizen, encouraging airlines to operate on regional and remote routes through enabling policies and incentives.

Pawan Hans is a helicopter service operating in hilly areas, widely used by tourists in the north-eastern sector, and also provides helicopter services to the petroleum sector and tourism.

Advantages and problems of air transport

The advantages are that air transport is the fastest means of movement, reduces distances by minimising travel time, and is essential where distances are large and the terrain and climatic conditions are diverse. Pawan Hans helicopters reach hilly areas and the north-eastern sector.

The problems are that air services are costly and were for long limited to a few centres; real development came only after Independence, and regional and remote routes needed the incentives of the Regional Connectivity Scheme to attract airlines.

Areas well and poorly served by air transport

Air transport is well served in the major metropolitan centres and, through UDAN and Pawan Hans, increasingly in regional and remote routes and hilly areas such as the north-eastern sector.

It is poorly served in remote rural areas that have no airfield, where the cost of flying and the absence of regular routes keep air transport out of reach.

What is the role of oil and gas pipelines?

Pipelines are the most convenient and efficient mode of transporting liquids and gases over long distances; even solids can be transported after conversion into slurry. The following steps trace the development of India's pipeline network.

1. Oil India Limited (OIL) was incorporated in 1959, under the Ministry of Petroleum and Natural Gas, for the exploration, production and transportation of crude oil and natural gas.
2. OIL built Asia's first cross-country pipeline, 1,157 km long, from the Naharkatiya oilfield in Assam to the Barauni refinery in Bihar.
3. This pipeline was further extended up to Kanpur in 1966.
4. GAIL (India) Ltd. was set up in 1984 as a public sector undertaking to transport, process and market natural gas.
5. GAIL constructed the first 1,700-km Hazira-Vijaipur-Jagdishpur (HVJ) cross-country gas pipeline, linking the Mumbai High and Bassein gas fields with fertiliser, power and industrial complexes in western and northern India.
6. India's gas pipeline infrastructure has since expanded more than tenfold, from 1,700 km to 18,500 km, and is expected to reach over 34,000 km as a Gas Grid linking all gas sources and consuming markets, including the north-eastern states.

Pipelines have the advantage of avoiding loading and unloading losses, working continuously regardless of weather, and needing little land once laid; a disadvantage is their inflexibility, since a fixed route cannot be easily altered to new demand centres, and their capacity cannot be quickly expanded for sudden surges in supply.

Areas well and poorly served by pipelines

Pipelines are well served in the oil and gas fields of Assam, Gujarat and the Mumbai High and Bassein fields, and along the HVJ corridor linking western and northern India. The Gas Grid is being extended to all gas sources and consuming markets, including the north-eastern states.

They are poorly served in areas without gas fields or consuming markets, since a pipeline follows a fixed route and cannot be easily redirected to new demand centres.

Why is communication important for rural and urban development?

Communication is the exchange of views, ideas and messages from one place to another or between individuals.

Human beings evolved methods of communication over time, such as beating drums or hollow tree trunks, smoke or fire signals, fast runners, and animals including horses, camels, dogs and birds; initially the means of communication were also the means of transportation.

The invention of the post office, telegraph, printing press, telephone and satellite made communication much faster and easier, and developments in science and technology have significantly contributed to this revolution.

Infrastructure, including both transport and communication, is treated as key to the development of an industrial economy, since the movement of raw materials, finished goods and information between producers, markets and consumers underlies every stage of economic activity.

On the basis of scale and quality, modes of communication can be divided into personal communication systems and mass communication systems.

Communication in rural and urban development

In rural development, communication carries information, education and entertainment to backward and remote rural areas. After INSAT-1A became operational, Common National Programmes were started for the entire network and television services were extended to these areas. Cellular phones widen two-way communication into rural areas.

In urban development, the internet is the most effective and advanced personal communication system and is widely used in urban areas, for e-mail, e-commerce and money transactions. Radio and television reach every household and shape the socio-cultural life of people.

What is the policy on communication?

The policy has been to bring the popular means of communication under public control and extend them to all regions. Radio was brought under government control in 1930 as the Indian Broadcasting System, renamed All India Radio in 1936 and Akashwani in 1957.

Television began in 1959 in the National Capital, other centres became operational after 1972, and in 1976 TV was delinked from All India Radio as Doordarshan. After INSAT-1A became operational, Common National Programmes were started for the entire network and services were extended to backward and remote rural areas.

What are the modern means of communication?

Personal communication: the internet

Among personal communication systems, the internet is the most effective and advanced, widely used in urban areas.

It enables direct contact through e-mail and access to the world of knowledge and information, and is increasingly used for e-commerce and money transactions.

The internet functions like a huge central warehouse of data, providing efficient access to information at comparatively low cost.

Mass communication: radio, television and satellites

Radio broadcasting started in India in 1923 by the Radio Club of Bombay and quickly gained popularity, changing the socio-cultural life of people.

The government brought radio under its control in 1930 as the Indian Broadcasting System, which was renamed All India Radio in 1936 and Akashwani in 1957;

All India Radio broadcasts information, education and entertainment programmes, including special news bulletins during parliamentary and state legislature sessions.

Television services were initially limited to the National Capital, beginning in 1959; after 1972 other centres became operational, and in 1976 TV was delinked from All India Radio and got a separate identity as Doordarshan (DD).

After INSAT-1A (National Television-DD1) became operational, Common National Programmes were started for the entire network, extending services to backward and remote rural areas.

Satellites are a mode of communication in themselves and also regulate the use of other means of communication; their ability to give a continuous and synoptic view of a larger area makes satellite communication vital for economic and strategic reasons, including weather forecasting, monitoring of natural calamities and surveillance of border areas.

India's satellite systems are grouped into the Indian National Satellite System (INSAT), established in 1983 as a multi-purpose system for telecommunication, meteorological observation and other data and programmes, and the Indian Remote Sensing Satellite System (IRS), which became operational with the launch of IRS-1A in March 1988.

India has also developed its own launch vehicle, the PSLV (Polar Satellite Launch Vehicle). These satellites collect data in several spectral bands, transmitted to ground stations for various uses; the National Remote Sensing Centre (NRSC) at Hyderabad provides facilities for acquiring and processing this data, which is very useful for managing natural resources.

Mass communication versus telecommunication

Mass communication is the transmission of the same message simultaneously to a large, scattered and anonymous audience through media such as radio, television, newspapers and cinema, with no direct feedback channel back to the source.

Telecommunication is the transmission of signals, usually electronically, between two or more specific points or individuals, such as through the telephone, cellular phone or internet, and typically allows two-way, interactive exchange.

Geographic Information Systems (GIS) are computer-based systems that store, analyse and display spatially referenced data, often drawing on satellite and remote sensing inputs, and are used for planning and resource management.

Cellular phones extend personal telecommunication without fixed wires, using a network of local transmission cells, and have greatly widened the reach of two-way communication into rural areas.

What are the recent international trading patterns and products?

International trade moves mainly by sea. Over the last five years its pattern has had five clear features. The United States has been India's largest export market, while China has been its largest source of imports, with the UAE among the top partners on both sides. Exports are led by engineering goods, refined petroleum products, gems and jewellery and drugs and pharmaceuticals, and electronic goods, above all mobile phones, have been the fastest-growing export.

Imports are led by crude oil and petroleum products, electronic goods, gold, coal and machinery, and since 2022 Russia has become a leading supplier of crude oil. Merchandise imports have stayed larger than merchandise exports, so India runs a trade deficit in goods, which is partly offset by large exports of services such as software.

The direction of trade is set by the location of the ports, the shipping routes they face and the hinterland they serve. Ports on the west coast, such as Mumbai and Kochi, face the Arabian Sea and the routes to West Asia and Europe, while ports on the east coast, such as Chennai and Kolkata, face the Bay of Bengal and the routes to South-East Asia.

Oceanic routes carry approximately 95 per cent of India's foreign trade by volume and 70 per cent by value, so the pattern of products and the direction of trade are closely tied to the twelve major and 200 minor ports along the coastline of about 7,517 km.

Going beyond the syllabus

These ideas extend the unit and are not needed for the questions on it.

What is the Bharatmala Pariyojana?

The Bharatmala Pariyojana envisages about 26,000 km of Economic Corridors, which, together with the Golden Quadrilateral and the North-South and East-West Corridors, are expected to carry the majority of road freight traffic, with a focus on ring roads, bypasses and elevated corridors to decongest city traffic.

What is the Atal Tunnel?

The Atal Tunnel, 9.02 km long and built by the Border Roads Organisation in the Pir Panjal range at an altitude of about 3,000 metres above mean sea level, connects Manali to the Lahaul-Spiti valley throughout the year; earlier the valley was cut off for about six months each year owing to heavy snowfall.

Glossary

• National Highway — a main road constructed and maintained by the Central Government for inter-state transport and defence movement.
• State Highway — a road built and maintained by a state government joining the state capital with district headquarters and other towns.
• Golden Quadrilateral — the 5,846-km, 4/6-lane high-density road corridor linking Delhi, Mumbai, Chennai and Kolkata.
• Broad gauge — a railway track with 1.676 metre between the rails, the standard width in India.
• National Waterway — an inland waterway declared under the National Waterways Act, 2016, for navigation and transport.
• Harbour — a sheltered stretch of coastal water providing safe anchorage for ships.
• Port — a harbour developed with docks and cargo-handling infrastructure for loading and unloading ships.
• Natural harbour — a harbour formed by the natural shape of the coastline, such as a bay or estuary.
• Artificial harbour — a harbour created by engineering works such as breakwaters where the coast gives no natural shelter.
• UDAN — the Regional Connectivity Scheme designed to make regional air travel affordable for the common citizen.
• INSAT — the Indian National Satellite System, a multi-purpose satellite system for telecommunication, meteorology and data services.
• IRS — the Indian Remote Sensing Satellite System, used to collect spectral data of the Earth's surface.
• Mass communication — transmission of the same message to a large, scattered audience with no direct feedback channel.
• Telecommunication — two-way transmission of signals between specific points, such as by telephone or internet.
• GIS (Geographic Information System) — a computer-based system for storing, analysing and displaying spatially referenced data.

Common errors and misconceptions

• Misconception: all ports are natural harbours. Correct: some major ports such as Chennai are built on artificial harbours created by breakwaters where the coastline gives no natural shelter.
• Misconception: "harbour" and "port" mean the same thing. Correct: a harbour is a sheltered water body, while a port is a harbour equipped with infrastructure for loading and unloading cargo.
• Misconception: National Highways make up most of India's road length. Correct: National Highways are only about 2 per cent of total road length but carry 40 per cent of road traffic.
• Misconception: the Golden Quadrilateral and the North-South and East-West corridors are the same project. Correct: they are separate corridors; the Golden Quadrilateral links Delhi-Mumbai-Chennai-Kolkata, while the North-South links Srinagar to Kanniyakumari and the East-West links Silchar to Porbandar.
• Misconception: Doordarshan and All India Radio are the same organisation. Correct: television was delinked from All India Radio in 1976 and given a separate identity as Doordarshan.
• Misconception: mass communication and telecommunication are interchangeable terms. Correct: mass communication sends one message to a large scattered audience, while telecommunication is typically a two-way exchange between specific points.
• Misconception: pipelines can carry only liquids. Correct: pipelines transport liquids and gases directly, and even solids after conversion into slurry.

Exam-style questions with model answers

Q1. State the length of the Golden Quadrilateral and the four cities it connects. [1 mark]

1. The Golden Quadrilateral is 5,846 km long and connects Delhi, Mumbai, Chennai and Kolkata.

Q2. Define a natural harbour and an artificial harbour, giving one example of each. [2 marks]

1. A natural harbour is formed by natural coastal features such as a deep bay or an estuary, for example Mumbai or Kochi.
2. An artificial harbour is created by engineering works such as breakwaters and dredged channels where the natural coast gives no shelter, for example Chennai.

Q3. Assertion: The National Highways carry a large share of road traffic. Reason: National Highways form only about 2 per cent of the total road length. Choose the correct option: (a) both true and Reason explains Assertion; (b) both true but Reason does not explain Assertion; (c) Assertion true, Reason false; (d) both false. [1 mark]

1. Option (b): both statements are true, but the small share of road length does not explain why the National Highways carry 40 per cent of road traffic.

Q4. On an outline map of India, mark and label Mumbai, Chennai, Kolkata and Kochi, and state one advantage of each port. [4 marks]

1. Mumbai, on the west coast, has a large natural harbour giving safe anchorage and deep water, and is India's leading port.
2. Chennai, on the east coast, is one of India's oldest artificial harbours, built where the Coromandel coast has no natural indentation.
3. Kolkata, with its outport Haldia, is a riverine port on the Hooghly serving the eastern hinterland, though it needs continuous dredging.
4. Kochi, on the Malabar coast of Kerala, is a natural harbour sheltered by a backwater lagoon.

Q5. Explain the advantages and problems of road transport in India. [4 marks]

1. Roads carry about 85 per cent of passenger and 70 per cent of freight traffic every year and are relatively suitable for shorter-distance travel.
2. Roads provide door-to-door service and act as feeders to railways and ports.
3. Roads concentrate in and around urban centres, so rural and remote areas have the least connectivity, and rural road density is very low in hilly, plateau and forested areas.
4. The quality of rural roads deteriorates away from urban centres, and National Highways form only about 2 per cent of road length, so most traffic runs on weaker roads.

Q6. Explain the importance of communication in rural and urban development and state the policy followed for it. [7 marks]

1. Communication is the exchange of views, ideas and messages from one place to another or between individuals.
2. In rural development, communication carries information, education and entertainment to backward and remote rural areas.
3. After INSAT-1A became operational, Common National Programmes were started for the entire network and television services were extended to backward and remote rural areas.
4. In urban development, the internet is the most effective and advanced personal communication system, widely used for e-mail, e-commerce and money transactions.
5. Radio and television reach every household and shape the socio-cultural life of people.
6. The policy has been to bring the popular means of communication under public control: radio was brought under government control in 1930 as the Indian Broadcasting System, renamed All India Radio in 1936 and Akashwani in 1957.
7. Television began in 1959 in the National Capital, other centres became operational after 1972, and in 1976 TV was delinked from All India Radio as Doordarshan.

Q7. Distinguish between mass communication and telecommunication, with one example of each. [4 marks]

1. Mass communication transmits the same message simultaneously to a large, scattered and anonymous audience, for example radio or television broadcasting.
2. It has no direct feedback channel back to the source.
3. Telecommunication is the transmission of signals between two or more specific points or individuals, for example the telephone or the internet.
4. It typically allows a two-way, interactive exchange between known parties.

Q8. Explain the factors that affect the nature and direction of trade from India's major ports, and state the main items of export and import. [7 marks]

1. The port's hinterland and the goods produced there shape what is exported and imported through it.
2. The depth of water and the need for dredging affect which ships can use the port, as at Kolkata on the Hooghly.
3. Distance from major shipping routes affects the direction of trade, with west coast ports such as Mumbai and Kochi facing the Arabian Sea and east coast ports such as Chennai and Kolkata facing the Bay of Bengal.
4. Connectivity by rail and road to the interior affects how much cargo reaches the port.
5. The main imports are petroleum and petroleum products, machinery, chemicals and consumer goods.
6. The main exports are engineering goods, textiles, agricultural produce and marine products.
7. Oceanic routes carry approximately 95 per cent of India's foreign trade by volume and 70 per cent by value, so the pattern of products and the direction of trade are closely tied to the ports.

Key takeaways

• National Highways are only 2 per cent of India's road length but carry 40 per cent of road traffic, while rural roads make up about 80 per cent of total road length.
• The Golden Quadrilateral links Delhi, Mumbai, Chennai and Kolkata over 5,846 km; the North-South and East-West corridors run Srinagar-Kanniyakumari and Silchar-Porbandar.
• Indian Railways is divided into 17 zones and runs mainly on broad gauge (1.676 m), with metre and narrow gauge being progressively converted.
• Inland waterways cover 14,500 km, and the National Waterways Act, 2016, declared 111 waterways as National Waterways.
• Oceanic routes carry about 95 per cent of India's foreign trade by volume and 70 per cent by value through twelve major and 200 minor ports.
• A harbour is a sheltered anchorage, while a port is a harbour developed with cargo-handling infrastructure; harbours may be natural, as at Mumbai and Kochi, or artificial, as at Chennai.
• UDAN promotes affordable regional air travel, and pipelines built by OIL and GAIL have expanded gas transport infrastructure from 1,700 km to 18,500 km.
• Communication includes personal systems such as the internet and mass communication systems such as radio, Doordarshan and satellites, and is distinct from telecommunication, which is a direct, two-way exchange.

Test yourself

Into how many zones is the Indian Railways system divided?

Seventeen zones, created because the very large size of the network puts pressure on a centralised management system.

What is the length and route of National Waterway No. 1?

NW1 runs 1,620 km from Prayagraj to Haldia along the Ganga, navigable by mechanical boats up to Patna and by ordinary boats up to Haridwar.

Who built the pipeline from Naharkatiya to Barauni, and how long was it?

Oil India Limited (OIL) built this 1,157-km pipeline, Asia's first cross-country pipeline, from the Naharkatiya oilfield in Assam to the Barauni refinery in Bihar.

When did television in India get a separate identity from All India Radio, and what name was it given?

In 1976, television was delinked from All India Radio and named Doordarshan (DD).

What is the difference between a natural and an artificial harbour?

A natural harbour is formed by the natural shape of the coastline, such as a bay; an artificial harbour is built by engineering works such as breakwaters where the coast lacks natural shelter.

What percentage of India's foreign trade by value moves through ocean routes?

About 70 per cent of India's foreign trade by value moves through ocean routes, while about 95 per cent moves by volume.

What is UDAN, and what is its purpose?

UDAN (Ude Desh ka Aam Nagrik) is a Regional Connectivity Scheme designed to jump-start regional aviation by making flying affordable for the common citizen on regional and remote routes.

Name the two Indian satellite systems grouped by configuration and purpose.

INSAT (Indian National Satellite System), established in 1983 for telecommunication and meteorology, and IRS (Indian Remote Sensing Satellite System), operational since 1988 for remote sensing data.