Transport and Communication

Chapter 6 introduced transport and communication as tertiary services. This chapter looks at them in detail — the modes, the great routes of the world and the communication revolution. Each region produces what it is best suited for, so trade (Chapter 8) depends on transport and communication, and so do high living standards.

• Builds on Chapters 4–6: transport moves raw materials to factories (location factors) and goods to markets.
• Builds on Class 11 Physical Geography: relief, climate, ocean currents and rivers shape every route.
• Leads into Chapter 8: international trade and ports.
• UPSC: GS1 (world geography — routes, canals, waterways; railways in history), GS3 (infrastructure: roads, ports, airports, inland waterways), and many prelims map and route questions.

• Modes: land (road, rail, pipelines, ropeways), water, air; roads short and door-to-door, rail bulky and long, ships intercontinental, air light and valuable.
• First public railway: Stockton–Darlington, 1825; gauges: broad > 1.5 m, standard 1.44 m, metre 1 m.
• Trans-Siberian: St Petersburg–Vladivostok, 9,332 km, longest double-tracked electrified line (NCERT).
• North Atlantic = Big Trunk Route, ~¼ of world trade; Suez (1869, no locks) and Panama (locks, NY–SF cut by 13,000 km).
• Inland waterways: Rhine (world's busiest), Danube, Volga, Great Lakes–St Lawrence, Mississippi.
• Communication: optic fibre, satellites (cost independent of distance), internet — ~5.4 billion users (2023).

Transport carries people and goods from place to place using humans, animals and vehicles, over land, water and air; pipelines carry petroleum, gas and liquefied ores. It is an organised service industry — arteries, vehicles and the organisation that maintains them and handles loading, unloading and delivery. Every nation also builds transport for defence, and good transport with communication promotes unity among scattered peoples. A transport network is several places (nodes) joined by routes (links).

The importance of a mode depends on the goods, the cost and what is available. NCERT's rule of thumb: international movement → ocean freighters; short distances and door-to-door → roads; large volumes of bulky goods over long distances within a country → railways; high-value, light, perishable goods → air. In a well-managed system the modes complement each other.

Humans were the first carriers — think of a bride carried in a palanquin (palki or doli) by four Kahars in north India. Animals became beasts of burden; the wheel brought carts and wagons. The real revolution came with the steam engine in the 18th century: perhaps the first public railway opened in 1825 between Stockton and Darlington in northern England, and railways became the fastest transport of the 19th century, opening continental interiors (in the USA) to commercial grain farming, mining and manufacturing. The internal combustion engine then revolutionised roads and vehicles. Newer land modes: pipelines, ropeways and cableways. Old forms (porters, pack animals, carts) are the most expensive; large freighters the cheapest; but the old forms still reach interiors — porters and human-drawn carts in densely populated parts of India and China.

Roads are the most economical for short distances and offer door-to-door service. Unmetalled roads fail in the rains; even metalled ones suffer in heavy rain and floods, where high railway embankments do better — but rail length is too small to serve vast developing countries cheaply, so roads remain vital for trade, commerce and tourism. Road quality differs greatly between rich and poor countries because construction and maintenance are expensive; developed countries have motorways, autobahns (Germany) and inter-state highways. The world has only about 15 million km of motorable roads, 33% of them in North America, which also has the highest road density and most vehicles.

Highways are metalled roads connecting distant places, built for unobstructed movement — up to 80 m wide, with separate lanes, bridges, flyovers and dual carriageways. In North America highway density is about 0.65 km per sq km and every place is within 20 km of a highway.

Border roads are laid along international boundaries; they integrate remote areas with major cities and serve defence, carrying goods to border villages and military camps.

Railways carry bulky goods and passengers over long distances. Gauges: broad (more than 1.5 m), standard (1.44 m, used in the UK), metre (1 m) and smaller. Commuter trains carry millions daily in the UK, USA, Japan and India. The world has about 13 lakh km of railways.

Trans-continental railways run across a continent and link its two ends; they were built for economic and political reasons. NCERT notes they have lost some importance to quicker, more flexible air and road transport.

Water transport needs no route construction — only ports at each end; it is much cheaper because water's friction is far less than land's, and its energy cost is lower. It is divided into sea routes and inland waterways. Oceans are smooth highways traversable in all directions with no maintenance; modern ships carry radar, wireless and navigation aids, refrigerated chambers, tankers and specialised ships; containers have made cargo handling easier.

Coastal shipping suits countries with long coastlines — the USA, China and India; European states are well placed to ship coast to coast. Properly developed, it can reduce congestion on land routes.

Rivers, canals, lakes and coasts have carried boats and steamers since ancient times. Development depends on navigability (width and depth), continuity of water flow and transport technology. Rivers are the only transport in dense forests and suit heavy cargo (coal, cement, timber, ores). In India, riverways were once the main highways but declined because of competition from railways, diversion of water for irrigation and poor maintenance. Developed countries have improved rivers by dredging, stabilising banks and building dams and barrages.

Air transport is the fastest but very costly; preferred for long-distance passengers and valuable cargo, and often the only way into inaccessible areas — goods to the Inuit of northern Canada over frozen ground, or Himalayan places cut off by landslides, avalanches and snow. It has great strategic value. It needs costly infrastructure (hangars, landing, fuelling, maintenance), so airports developed most in industrialised countries. No place is more than 35 hours away. The UK pioneered commercial jets; the USA developed post-war international aviation; more than 250 airlines run regular services. Supersonic aircraft covered London–New York in 3½ hours.

Inter-continental air routes form a distinct east–west belt in the northern hemisphere, with dense networks in the eastern USA, Western Europe and South-east Asia; the USA alone has 60% of the world's airways (NCERT). Nodal points: New York, London, Paris, Amsterdam, Frankfurt, Rome, Moscow, Karachi, New Delhi, Mumbai, Bangkok, Singapore, Tokyo, San Francisco, Los Angeles, Chicago. Africa, Asiatic Russia and South America lack services; services are limited between 10° and 35° in the southern hemisphere (sparse population, little land, less development).

Pipelines carry liquids and gases — water, petroleum, natural gas — in an uninterrupted flow; also LPG to homes, liquefied coal, and even milk from farms to factories in New Zealand. The USA has a dense oil network from producing to consuming areas; the famous Big Inch carries petroleum from the Gulf of Mexico oil wells to the north-eastern states; about 17% of US freight (tonne-km) moves by pipeline. In Europe, Russia, West Asia and India pipelines link wells to refineries, ports and markets; Turkmenistan has pipelines to Iran and China. NCERT mentions a proposed Iran–Pakistan–India pipeline as potentially the world's longest.

The telegraph helped colonise the American West; AT&T had a monopoly over US telephones in the early and mid-20th century, and the telephone drove US urbanisation — firms centralised headquarters in cities with branches in towns. The telephone is still the most used mode; in developing countries cell phones bring rural connectivity. The first big breakthrough was optic fibre cables (OFC) — large data volumes sent fast, securely and almost error-free. With digitisation in the 1990s, telecommunication merged with computers into the internet.

Satellite communication grew from the 1970s after the USA and USSR pioneered space research. Satellites make the unit cost and time of communication independent of distance — 500 km costs the same as 5,000 km. India: Aryabhata (19 April 1975), Bhaskara-I (1979), Rohini (1980), APPLE (19 June 1981, on an Ariane rocket); Bhaskara, ‘Challenger’ and INSAT-1B made long-distance communication, television, radio and weather forecasting effective.

Cyberspace is the electronic, computerised world of the internet and the World Wide Web — communicating and accessing information without physical movement of sender or receiver, anywhere: an office, a boat, a plane. Its growth is unprecedented.

The USA's share of users fell from 66% (1995) to 25% (2005). Cyberspace will expand human economic and social space through e-mail, e-commerce, e-learning and e-governance; with fax, TV and radio it reaches more people across place and time. These communication systems, more than transport, have made the global village real.

Try each question yourself first, then open the outline to compare. All five multiple-choice questions are in the self-check below.

Numbers

One-liners

• Roads short and door-to-door; rail bulky and long; ships intercontinental; air light and valuable.
• North Atlantic = Big Trunk Route, linking two industrial regions.
• Suez: sea-level, no locks; Panama: locks.
• Rhine: the world's busiest inland waterway.
• Trans-continental railways follow each country's settled southern belt.
• Satellites make communication cost independent of distance.
• Cyberspace expands through e-mail, e-commerce, e-learning, e-governance.
• Old transport forms are the most expensive per unit.

Traps to avoid

• Stuart Highway: Darwin–Melbourne, not Edmonton–Anchorage.
• Channel Tunnel links London and Paris.
• Big Inch carries petroleum, not LPG.
• Mumbai to Suez (port) does not need the Suez Canal.
• NCERT names four Great Lakes; there are five (Michigan).
• Panama is usually given as ~82 km long; NCERT says 72 km.
• Concorde (supersonic London–New York) retired in 2003.
• Fig. 7.5's stations differ from the text's Trans-Siberian list.

Prelims — what UPSC asks

• Routes and canals are UPSC favourites: why the North Atlantic route matters (1984); not passing through Suez (1997); Nicaragua as Panama's rival (2007); the Kra isthmus canal (2011); the SUMED pipeline and the Red Sea–Mediterranean link (2024).
• Learn each trans-continental railway's ends and two or three stations, each canal's ends and type, and each inland waterway's river, sea and key port.
• Watch current affairs on chokepoints (Suez, Bab-el-Mandeb, Malacca, Panama droughts) — they build on this chapter.

Mains — where it appears and how to answer

• GS1: socio-economic effects of railways in different countries (2023); problems and prospects of inland water transport in India (2016).
• Answer frame: mode or route → physical basis (relief, climate, rivers) → economic role (what it carries, which regions it links) → historical or political purpose → problems → current developments. Draw a schematic, not a traced map.
• Link transport to Chapters 4–5 (raw material and market location) and Chapter 8 (trade, ports).

Tap an option. NCERT's own exercise questions come first; the rest test the figures and common confusions.

Open any question to attempt it in the Question bank — your attempt is saved to your progress.