Madurai Metro
Madurai Metro, is a proposed rapid transit system for Madurai, Tamil Nadu. History

Background
The Government of Tamilnadu proposed for a Metro Rail in Madurai, the third largest city in the state of Tamilnadu. CMRL releases tender notice for preparing the project's  feasibility report in March, 2022 and BARSYL bags the tender to prepare feasibility study with the deadline of May, 2022

Project timeline
2012: Tamil Nadu Government under J. Jayalalithaa announces monorail project for Tier II cities such as Madurai, Tiruchirappalli, Tirunelveli and Salem
2021: Tamil Nadu Government under M. K. Stalin announces metro rail projects for Tier II cities such as Madurai
2022: BARSYL bags the tender to prepare feasibility study for the mass rapid transportation system in Madurai
2022 November: Madurai metro rail will cover 29 km with 17 stations in phase 1 stated  by the DFR prepared by Balaji Rail Road Systems (BARSYL) and the Chennai Metro Rail Limited (CMRL)
2022 December: Detailed Project Report (DPR) was awaited for Madurai Metro
2023 March: Aarvee Associates bags the tender to prepare Detailed Project Report (DPR) for 1.35 crores. Proposed Corridors

Phase I
Proposed Metro Rail Routes in Madurai at Phase-1 stage

Phase II
Proposed Metro Rail Routes in Madurai at Phase-II stage

Phase I Planning

“For the 29-km distance in phase 1, the route has been planned from Otthakadai through areas like Mattuthavani, Pudur to Tirumangalam in elevated lines. However, due to the presence of the Meenakshi Temple in the area, suggestions have also been placed for underground lines near Vaigai River and Periyar bus stand,” added the official. Subsequently, for phase 2, the proposal includes locations such as Thirumangalam, Madurai Airport, and Therkuvasal ultimately connecting to corridor 1 of phase 1. The 10 important stations earmarked as per DFR include Otthakadai station, Madurai High Court station, Pudur station, Simmakal station, Madurai junction Metro station, Pasumalai station, Thiru Nagar station, Thoppur station, Kappalur and Thirumangalam Metro stations. “The number of stations will likely be added during the DPR and the construction. However, of the 17 stations in the 29 km distance, 10 stations in important locations have been earmarked as per the footfall and feasibility,” observed the official. See also 
Chennai Metro
Coimbatore Metro
Kochi Metro
List of Madurai metro stations

References

Transport in Madurai
Standard gauge railways in India
Proposed rapid transit in India
Proposed infrastructure in Tamil Nadu