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17 Jan 2026·Source: The Indian Express
3 min
Environment & EcologyEconomyNEWS

Delhi Metro Expansion: CAQM Suggests Doubling Network to Curb Pollution

CAQM proposes doubling Delhi Metro network, citing Beijing's success in curbing pollution.

Delhi Metro Expansion: CAQM Suggests Doubling Network to Curb Pollution

Photo by Liana S

The Commission for Air Quality Management (CAQM) suggests that Delhi Metro needs to double its operational network to effectively reduce vehicular pollution, drawing parallels with Beijing's successful strategies. Beijing significantly expanded its metro network, leading to a notable decrease in vehicle emissions and improved air quality.

CAQM emphasizes that enhancing public transportation infrastructure is crucial for Delhi to combat its persistent air pollution issues. This recommendation highlights the need for substantial investment and expansion of Delhi's metro system to achieve cleaner air and a more sustainable urban environment.

Key Facts

1.

CAQM: Delhi Metro needs to double its network

2.

Beijing: Expanded metro network reduced pollution

UPSC Exam Angles

1.

GS Paper III: Infrastructure, Environment Pollution

2.

Links to Sustainable Development Goals (SDGs)

3.

Potential for questions on urban planning and transportation

Visual Insights

Delhi Metro Network and Air Quality

Map showing the existing Delhi Metro network and areas with high air pollution levels, highlighting the need for expansion as suggested by CAQM. The markers indicate key metro stations and pollution hotspots.

Loading interactive map...

📍Delhi📍Gurugram📍Noida📍Ghaziabad
More Information

Background

The concept of urban rail transit systems dates back to the mid-19th century with the London Underground, which began operations in 1863. Early metro systems were primarily steam-powered and focused on alleviating congestion in rapidly growing industrial cities. The 20th century saw the electrification of metro systems and their proliferation across the globe, particularly in Europe, North America, and later, Asia.

The development of metro systems in Asia, especially in cities like Tokyo and Hong Kong, demonstrated their potential for high-capacity urban transport. These systems often integrated with other modes of transport and played a crucial role in shaping urban development patterns. The Delhi Metro, inspired by these global examples, was conceived in the late 1990s to address Delhi's growing transportation challenges and air pollution concerns, marking a significant step in India's urban infrastructure development.

Latest Developments

In recent years, Delhi Metro has focused on expanding its network through Phase IV, which includes the construction of new lines and extensions of existing ones. This phase aims to improve connectivity to peripheral areas and reduce congestion in central Delhi. The Delhi Metro Rail Corporation (DMRC) has also been exploring innovative technologies such as driverless trains and advanced signaling systems to enhance operational efficiency.

Furthermore, there's been an increased emphasis on integrating the metro with other modes of public transport, such as buses and cycle-sharing schemes, to create a seamless multi-modal transportation system. The long-term vision includes achieving complete network integration and promoting sustainable urban mobility solutions to address the city's growing population and environmental challenges.

Practice Questions (MCQs)

1. Consider the following statements regarding the Commission for Air Quality Management (CAQM): 1. It was constituted as a statutory body in 2021 under the Commission for Air Quality Management in National Capital Region and Adjoining Areas Act, 2021. 2. The CAQM only has advisory powers and cannot issue binding directions. 3. The CAQM coordinates efforts of state governments, the Central Pollution Control Board (CPCB), and other relevant stakeholders. Which of the statements given above is/are correct?

  • A.1 and 3 only
  • B.2 only
  • C.1, 2 and 3
  • D.1 only
Show Answer

Answer: A

Statement 2 is incorrect. The CAQM has the power to issue binding directions. Statements 1 and 3 are correct.

2. Which of the following transportation strategies is most likely to reduce vehicular emissions in a densely populated urban area like Delhi?

  • A.Promoting the use of personal vehicles with internal combustion engines
  • B.Investing in a comprehensive and integrated public transportation system
  • C.Reducing the number of roads and highways within the city
  • D.Encouraging the construction of more parking spaces in commercial areas
Show Answer

Answer: B

Investing in a comprehensive public transportation system encourages people to use public transport instead of personal vehicles, thus reducing vehicular emissions.

3. Assertion (A): Expanding the Delhi Metro network can significantly contribute to reducing air pollution in the city. Reason (R): Metro systems are powered by electricity, which, if sourced from renewable sources, can result in near-zero emissions from transportation. In the context of the above statements, which of the following is correct?

  • 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
Show Answer

Answer: A

Both the assertion and the reason are true, and the reason correctly explains why expanding the metro network helps reduce air pollution.

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