The proposed ₹12,200-crore Thane Integrated Ring Metro (TIRM) is facing mounting opposition from local residents, environmental activists, and urban transport experts. Concerns center around the project's potential to exacerbate traffic congestion, particularly along Ghodbunder Road, where several stations are planned near schools and hospitals. Critics, including the Citizens for Sustainable Transport (CST-Thane) and the Thane Green Collective, have called for a halt to all project activities until a comprehensive assessment is completed. They argue that the Detailed Project Report (DPR) contains significant flaws in population and ridership forecasts, and environmental assessments are inadequate. Environmentalists highlight that the project could impact a much larger number of trees than reported, threatening the sensitive mangrove ecosystem of Thane Creek. Additionally, the engineering complexities of the metro's alignment, which includes numerous bends and a 3-km underground section, raise concerns about long-term operational risks and potential disruptions to the city's transport network. Citizens are urging the state government to prioritize a transparent review and reassess transport needs before moving forward.