GeographyCBSE Class 12 · Transport and Communication in India

Road Transport in India: Road Classes, National Highways and Major Projects (Class 12 Geography, India: People and Economy, Chapter 7)

Updated 17 October 2026 · Fact-checked

India's roads are classified for construction and maintenance as National Highways, State Highways, District Roads and Rural Roads, plus Border Roads. National Highways form about 2 per cent of road length yet carry 40 per cent of the traffic. Major projects are the Golden Quadrilateral, North-South and East-West Corridors and Bharatmala.

Notice that National Highways are the smallest class by length (2%) yet carry the largest share of traffic (40%).

Illustration drawn for QuestionBuddy.

Understand Road Transport in India: Classification, Highways and Projects

Why this topic matters. Road transport carries most of India's passenger and goods movement. Examiners ask the classification of roads, the Golden Quadrilateral and corridor termini, BRO and a few numbers. Learn the table and the three corridor figures.

1. Place of roads in transport.

India has a very large road network, about 62.16 lakh km (Annual Report 2020-21 of the road ministry, as quoted by NCERT).
Roads carry about 85 per cent of passenger and 70 per cent of freight traffic every year. They suit shorter distances.
Early history: Sher Shah Suri's Shahi road from the Indus valley to the Sonar valley of Bengal was renamed the Grand Trunk (GT) Road in the British period (Calcutta to Peshawar); today it runs from Amritsar to Kolkata.
Modern planning: the Nagpur Plan (1943) could not be implemented for lack of coordination among princely states and British India; after Independence a twenty-year road plan (1961) was introduced. Roads still concentrate around urban centres, while rural and remote areas have the least connectivity.

2. Classification of roads (for construction and maintenance).

Class	Built and maintained by	Role
National Highways (NH)	Central Government	Inter-state transport, defence movement; link state capitals, big cities, ports, rail junctions
State Highways (SH)	State governments	Join state capitals with district headquarters and important towns; connected to NHs
District Roads	District level	Link district headquarters with important nodes in the district
Rural Roads	Rural areas	Vital rural links; about 80 per cent of the total road length; density varies with terrain
Other roads	Border Roads, International Highways	Strategic and neighbourly links

3. National Highways.

Length grew from 19,700 km in 1951 to 1,36,440 km in 2020.
NHs are only about 2 per cent of the total road length but carry 40 per cent of road traffic.
The National Highways Authority of India (NHAI), operationalised in 1995, is an autonomous body under the Ministry of Surface Transport for the development, maintenance and operation of NHs; it is the apex body for improving NH quality.
Road network 2020 (km): NH 1,36,440; SH 1,76,818; other roads 59,02,539; total 62,15,797.

4. Projects of NHAI.

Golden Quadrilateral: 5,846 km, 4/6-lane, high-density corridor linking Delhi-Mumbai-Chennai-Kolkata; reduces time, distance and cost among the mega cities.
North-South Corridor: Srinagar to Kanniyakumari (including the Cochin-Salem spur), 4,076 km.
East-West Corridor: Silchar (Assam) to Porbandar (Gujarat), 3,640 km.
Bharatmala Pariyojana: about 26,000 km of Economic Corridors which, with the GQ and NS-EW corridors, are expected to carry most freight on roads; focus on ring roads, bypasses and elevated corridors to ease city congestion.
Rural roads receive help from the Pradhan Mantri Gram Sadak Yojana (the book's figure shows a road built under it).

5. Border Roads and international highways.

The Border Roads Organisation (BRO) was established in May 1960 to speed economic development and defence preparedness through strategic roads along the northern and north-eastern boundary. It built the road joining Chandigarh with Manali and Leh, at an average altitude of 4,270 m, and also clears snow at high altitude.
The Atal Tunnel (9.02 km, built by BRO in the Pir Panjal range at about 3,000 m) keeps Manali and the Lahaul-Spiti valley connected throughout the year; earlier the valley was cut off for about six months.
International highways promote good relations with neighbours (the book's pictures show the Delhi-Lahore bus and the Aman Setu between Baramula and Muzaffarabad).

Graph checklist. Mark the four metros of the Golden Quadrilateral, then the ends of the NS and EW corridors with their lengths.

Key quotations

Short lines worth knowing by heart: who says them, when, and why they matter.

The National Highways constitute only about 2 per cent of the total road length but carry 40 per cent of the road traffic.
NCERT, India: People and Economy, Chapter 7: From the discussion of National Highways.
The comparison that justifies investment in highways; use it in analysis questions.

Road Transport in India: Classification, Highways and Projects: key facts

Classes of roads: National Highways
State Highways
District Roads
Rural Roads
Border and international roads; Classified for construction and maintenance.
Highway corridors: Golden Quadrilateral 5,846 km
North-South 4,076 km
East-West 3,640 km
Bharatmala about 26,000 km; GQ links Delhi, Mumbai, Chennai, Kolkata.
NH shares: About 2 per cent of road length
40 per cent of road traffic
1951: 19,700 km
2020: 1,36,440 km; NHAI operationalised in 1995.
Border roads: BRO May 1960
Chandigarh-Manali-Leh road 4,270 m
Atal Tunnel 9.02 km; Strategic roads on northern and north-eastern boundary.

How to answer Road Transport in India: Classification, Highways and Projects questions

Road answers need the class, who builds it, and one figure. For project questions, give the termini and the length.

1Begin with the classes of roads by construction and maintenance.
2For each class say who builds it and what it joins.
3Use the 2 per cent and 40 per cent comparison for National Highways.
4Name termini and lengths for GQ, NS and EW corridors.
5Mention BRO, Atal Tunnel and Bharatmala when asked about strategic or latest projects.

Road Transport in India: Classification, Highways and Projects in real life

The idea, met in an everyday situation. Answer the question in your own words, then compare with the model answer. The one-line hook is what to remember.

Choosing the class of road

Suppose a district officer wants a road to link the district headquarters with a tehsil town that is also joined to a state highway, while a village on a hill asks for a link to the tehsil road.

Identify the class of each road in this arrangement.

Try it first, then show the solutionSolution

Roads joining district headquarters with other important nodes in the district are District Roads.
A road giving a village link in rural areas is a Rural Road.

Answer: The first is a District Road; the village link is a Rural Road.

Memory hook: Headquarters to nodes, district; village to tehsil, rural.

Why a corridor cuts cost

Suppose a manufacturer sends goods weekly from one metro to another along a 4/6-lane high-density highway, and finds that time and fuel cost per trip fall after an old two-lane stretch is upgraded.

Which NCERT objective of the Golden Quadrilateral does this illustrate?

Try it first, then show the solutionSolution

The Golden Quadrilateral connects the four big metros with a 4/6-lane corridor.
NCERT says it will considerably minimise the time, distance and cost of movement among the mega cities.

Answer: It shows the aim of reducing time, distance and cost of movement among mega cities.

Memory hook: Wider road, shorter day.

Tricks to remember Road Transport in India: Classification, Highways and Projects

Short memory aids. Say each one aloud once, then use it on a question the same day.

NSDR
National, State, District, Rural.
Use it when: Order of road classes.
Big, Medium, Small
Golden Quadrilateral (5,846) is longest, then North-South (4,076), then East-West (3,640).
Use it when: Recalling corridor lengths.
Two per cent, forty per cent
Small share of length, large share of traffic.
Use it when: NH importance.
Silchar to Porbandar
East-West runs sunrise to sunset: Assam to Gujarat.
Use it when: Termini of EW corridor.

Road Transport in India: Classification, Highways and Projects: solved examples

Ordered from board level to HOTS. Try each one before you open the solution.

Example 1: Who builds State Highways · 1 mark · MCQBoard level

State Highways in India are constructed and maintained by:
(A) the Central Government
(B) the state governments
(C) the Border Roads Organisation
(D) the National Highways Authority of India

Try it first, then show the solutionSolution

NCERT: State Highways are constructed and maintained by state governments and join state capitals with district headquarters (1 mark).

Answer: (B) the state governments

Example 2: Match the corridor with its length · 1 mark · MCQHarder board level

Match: (a) Golden Quadrilateral, (b) North-South Corridor, (c) East-West Corridor with (i) 3,640 km, (ii) 5,846 km, (iii) 4,076 km. Which is correct?
(A) (a)-(ii), (b)-(iii), (c)-(i)
(B) (a)-(i), (b)-(ii), (c)-(iii)
(C) (a)-(iii), (b)-(i), (c)-(ii)
(D) (a)-(ii), (b)-(i), (c)-(iii)

Try it first, then show the solutionSolution

GQ is 5,846 km; North-South is 4,076 km; East-West is 3,640 km (1 mark).

Answer: (A) (a)-(ii), (b)-(iii), (c)-(i)

Example 3: Assertion and reason on road traffic · 1 mark · Assertion-reasonHarder board level

Assertion (A): Roads carry the largest share of India's passenger and freight traffic.
Reason (R): About 85 per cent of passenger and 70 per cent of freight traffic are carried by roads every year.
(A) Both (A) and (R) are true and (R) is the correct explanation of (A).
(B) Both (A) and (R) are true but (R) is not the correct explanation of (A).
(C) (A) is true but (R) is false.
(D) (A) is false but (R) is true.

Try it first, then show the solutionSolution

R gives the NCERT figures on which A rests; the figures are the evidence for the claim (1 mark).

Answer: (A) Both (A) and (R) are true and (R) is the correct explanation of (A).

Example 4: Source-based: Border Roads · 3 marks · Source-basedHarder board level

Read the passage: "The Border Road Organisation (BRO) was established in May 1960 for accelerating economic development and strengthening defence preparedness through rapid and 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. This road runs at an average altitude of 4,270 metres above the mean sea level. Apart from construction, the BRO also undertakes snow clearance in high altitude areas."
(i) In which month and year was the BRO established? (1)
(A) January 1950 (B) May 1960 (C) August 1975 (D) March 1995
(ii) Which place along with Chandigarh and Manali is joined by the BRO road? (1)
(A) Shimla (B) Leh (C) Dehradun (D) Gangtok
(iii) Which additional task does the BRO undertake? (1)
(A) Collecting tolls (B) Snow clearance (C) Running buses (D) Port management

Try it first, then show the solutionSolution

(i) May 1960, so (B) (1 mark).
(ii) Leh, so (B) (1 mark).
(iii) Snow clearance, so (B) (1 mark).

Answer: (i) B; (ii) B; (iii) B

Example 5: Rural roads and National Highways · 3 marks · Short answerBoard level

Distinguish between National Highways and Rural Roads in two points each. (3 marks)

Try it first, then show the solutionSolution

National Highways: built and maintained by the Central Government; link state capitals, major cities, ports and rail junctions (1 mark).
National Highways are about 2 per cent of road length but carry 40 per cent of traffic (1 mark).
Rural Roads: about 80 per cent of total length, vital rural links whose density varies with terrain (1 mark).

Answer: National Highways are constructed and maintained by the Central Government for inter-state transport and defence movement, linking state capitals, major cities and ports. They are only about 2 per cent of road length but carry 40 per cent of the traffic. Rural Roads are about 80 per cent of the total road length and provide vital links in rural areas; their density differs with terrain.

Example 6: HOTS: Computing shares from the 2020 table · 5 marks · Long answerHOTS / competency

The 2020 table gives National Highways 1,36,440 km, State Highways 1,76,818 km, other roads 59,02,539 km and total 62,15,797 km. (a) Calculate the share of National Highways in total length (to one decimal place). (b) Compare it with NCERT's share of road traffic carried by NHs and explain what it shows. (c) Find the total length of the three NHAI corridor projects GQ, NS and EW. (5 marks)

Try it first, then show the solutionSolution

(a) 1,36,440 / 62,15,797 x 100 = 2.195 per cent, about 2.2 per cent (2 marks).
(b) NHs carry about 40 per cent of road traffic, roughly 18 times their share of length (40 / 2.2 = 18.2), showing that a small highway system handles a large volume of traffic (2 marks).
(c) 5,846 + 4,076 + 3,640 = 13,562 km (1 mark).

Answer: (a) National Highways share = 1,36,440 / 62,15,797 x 100 = about 2.2 per cent (checked twice; NCERT says about 2 per cent).

(b) NHs carry 40 per cent of road traffic. Dividing 40 by 2.2 gives about 18, so each kilometre of NH carries on average about 18 times the traffic share of its length share. This shows how heavily the NH system is used and why NHAI concentrates on improving its quality.

(c) Golden Quadrilateral 5,846 km + North-South 4,076 km + East-West 3,640 km = 13,562 km (the sum is derived by us; the GQ and the corridors overlap at some cities in practice, but NCERT gives no overlap figure).

Where students lose marks in Road Transport in India: Classification, Highways and Projects

The slips examiners see most often, and what to write instead.

Mistake: Mixing the builder of NH and SH
Both join important places.
Wrong working
State Highways are built by the Central Government.
Right working
National Highways are built by the Centre; State Highways by state governments.
Do this: Link NH with Centre, SH with State.
Usually costs: 1 mark.
Mistake: Wrong termini for the corridors
North-South and East-West are swapped.
Wrong working
North-South: Silchar to Porbandar.
Right working
North-South: Srinagar to Kanniyakumari; East-West: Silchar to Porbandar.
Do this: Use the sunrise-sunset trick.
Usually costs: 1 mark.
Mistake: Calling Golden Quadrilateral a rail project
Quadrilateral sounds like a map term.
Wrong working
It links the metros by rail.
Right working
It is a 5,846 km, 4/6-lane highway corridor.
Do this: Say 'highway corridor' with the length.
Usually costs: 1 mark.

Exam tips

Give the 2 per cent and 40 per cent figures whenever a question asks about the importance of National Highways.
Write corridor termini and lengths in a small table; they are easy marks.
For border roads, mention BRO (May 1960), the Chandigarh-Manali-Leh road and snow clearance.
If a question asks for latest projects, cite Bharatmala with its 26,000 km.

Practice questions on Road Transport in India: Classification, Highways and Projects

Write each answer on paper first. Open the hint only if you are stuck, and the answer only when you have finished.

Q1 · 1 mark · MCQBoard level
The road that carries the Chandigarh-Manali-Leh route at an average altitude of 4,270 m was constructed by:
(A) NHAI
(B) the state PWD of Himachal Pradesh
(C) the Border Roads Organisation
(D) the Airport Authority of India
Hint
Strategic roads along the northern boundary.
Answer
(C) the Border Roads Organisation.
Q2 · 2 marks · Very short answerHarder board level
Give the termini of the North-South and East-West Corridors. (2 marks)
Hint
Srinagar, Silchar.
Answer
North-South Corridor: Srinagar to Kanniyakumari (with the Cochin-Salem spur). East-West Corridor: Silchar in Assam to Porbandar in Gujarat.
Q3 · 1 mark · Assertion-reasonHarder board level
Assertion (A): Rural and remote areas of India have the least road connectivity.
Reason (R): Roads continue to concentrate in and around urban centres.
(A) Both (A) and (R) are true and (R) is the correct explanation of (A).
(B) Both (A) and (R) are true but (R) is not the correct explanation of (A).
(C) (A) is true but (R) is false.
(D) (A) is false but (R) is true.
Hint
Where are roads concentrated?
Answer
(A) Both are true and R explains A.
Q4 · 3 marks · Short answerHarder board level
National Highways grew from 19,700 km in 1951 to 1,36,440 km in 2020. Find the increase in km and how many times the 1951 length it is (to one decimal place). (3 marks)
Hint
Subtract, then divide.
Answer
Increase = 1,36,440 - 19,700 = 1,16,740 km. Ratio = 1,36,440 / 19,700 = 6.9 times (6.926). The length became nearly seven times in 69 years (derived: 2020 - 1951 = 69).
Q5 · 3 marks · Short answerBoard level
State the role of the National Highways Authority of India. (3 marks)
Hint
Year, status, responsibility.
Answer
NHAI was operationalised in 1995 as an autonomous body under the Ministry of Surface Transport. It is entrusted with the development, maintenance and operation of National Highways. It is also the apex body to improve the quality of roads designated as National Highways.
Q6 · 3 marks · Short answerHOTS / competency
The Atal Tunnel and the Bharatmala Pariyojana both address problems of roads, but of different kinds. Compare their purposes with facts from NCERT. (3 marks)
Hint
Isolation versus freight and congestion.
Answer
The Atal Tunnel (9.02 km, built by the BRO in the Pir Panjal range at about 3,000 m) connects Manali to the Lahaul-Spiti valley throughout the year, whereas earlier the valley was cut off for about six months a year by heavy snowfall; it solves isolation. Bharatmala plans about 26,000 km of Economic Corridors, ring roads, bypasses and elevated corridors to carry most freight traffic and decongest cities; it solves efficiency and congestion.

Test your recall

Answer in your head or on paper first, then open the card. Pulling an answer out of memory makes it stick far better than re-reading.

1.What share of road length do National Highways form?Show answer
About 2 per cent.
2.What was introduced in 1961 for roads after Independence?Show answer
A twenty-year road plan.
3.Which highway runs from Amritsar to Kolkata today?Show answer
The Grand Trunk (GT) Road.
4.Which year was NHAI operationalised?Show answer
1995.
5.What share of total road length is rural roads?Show answer
About 80 per cent.

Road Transport in India: Classification, Highways and Projects: frequently asked questions

Why were roads limited before the Second World War?

Road transport in the modern sense was very limited; the Nagpur Plan of 1943 could not be implemented due to lack of coordination between the princely states and British India.

What does the BRO do besides building roads?

It undertakes snow clearance in high altitude areas.

Why are rural roads fewer in hilly and forested areas?

NCERT notes that density of rural roads varies with terrain.

What does Bharatmala focus on?

Economic Corridors of about 26,000 km, ring roads, bypasses and elevated corridors to decongest cities and improve logistic efficiency.