360° UPSC Mains Analysis

Centre yet again rules out Metro Rail for Coimbatore and Madurai; recommends BRTS

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Flora & Fauna

Spot-billed Pelican (Pelecanus philippensis)
Status: Near Threatened
Threat: Habitat loss and disturbance in urban wetlands like Singanallur Lake due to infrastructure construction and pollution.
Painted Stork (Mycteria leucocephala)
Status: Near Threatened
Threat: Loss of nesting trees and degradation of shallow freshwater feeding grounds due to urban transport expansion.

Ecology Impact

The construction of elevated transit corridors in Coimbatore and Madurai risks disrupting urban wetlands like Singanallur Lake and Ukkadam Lake, which are vital ecological sinks and bird habitats. Infrastructure development can lead to tree felling, habitat fragmentation, and increased runoff, violating the spirit of Article 48A of the Constitution of India which directs the State to protect and improve the environment.

Science & Tech Angle

The underlying science involves Life Cycle Assessment (LCA) methodologies to compare the cumulative energy demand and greenhouse gas emissions of Metro Rail versus BRTS from construction to operation. Additionally, the integration of Intelligent Transportation Systems (ITS) and electric bus technology (e-buses) under the PM e-Bus Sewa scheme (2023) helps optimize route efficiency and minimize particulate matter (PM2.5 and PM10) emissions.

Climate Change Link

Transitioning to low-carbon public transport is crucial for India to meet its Nationally Determined Contributions (NDCs) under the Paris Agreement, aiming to reduce emissions intensity of GDP by 45% by 2030. While Metro Rail offers zero tailpipe emissions, Life Cycle Assessments (LCA) indicate that Bus Rapid Transit Systems (BRTS) have a significantly lower initial carbon footprint during the construction phase, making them a highly viable alternative for Tier-II cities.

Sustainable Development

Directly supports SDG 11 (Sustainable Cities and Communities) by providing access to safe, affordable, and sustainable transport systems. It also contributes to SDG 13 (Climate Action) by reducing urban carbon footprints and aligns with the fundamental duty under Article 51A(g) of the Constitution of India to protect and improve the natural environment.

International Frameworks

Paris Agreement
Aligns with India's commitment to reduce greenhouse gas emissions and transition to sustainable, low-carbon urban transport systems.
Ramsar Convention on Wetlands
Emphasizes the wise use and conservation of urban wetlands (such as those in Coimbatore) which act as critical ecological buffers against urban flooding and support biodiversity.
New Urban Agenda (Habitat III)
Advocates for sustainable, safe, and affordable public transport systems (like BRTS and Metro) to foster inclusive and resilient cities.

Sources consulted

AI-generated study aid. Grounded in web research, but verify critical facts against official sources before your exam.

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