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For the second round, Chennai Metro Rail Ltd. (CMRL) asked rolling stock producers to submit proposals for the supply of 210 coaches and the provision of 15 years of maintenance for the 116.1 km Phase 2 of the Chennai Metro project.The 70 train-sets of three standard gauge coaches from rolling stock contract ARE02A will operate on the new 45.4 km Line-3 (Madhavaram - Siruseri SIPCOT) and 44.6 km Line-5 (Madhavaram - Sholinganallur).Between July 2021 and May 2022, the first round of bidding, CMRL received no bids, and in June 2022, the tender was terminated. Estimate: N/AContract Period: 7975 days (21.84 years which includes 15 years of maintenance)Bid Submission Deadline: November 2, 2023 at 3 PMTechnical Bid Opening: November 2, 2023 at 4 PMCMRL’s Brief Scope: Contract for the Design, Manufacture, Supply, Testing, Commissioning, Personnel Training, and Comprehensive Maintenance of Standard Gauge Metro Rolling Stock (Electric Multiple Units) and Depot Equipment for Fifteen (15) YearsThe Grade of Automation-4 (GoA4) standards for driverless operations must be met by Chennai's new trains.For Package ARE04, which called for leasing 126 coaches for both lines, Titagarh submitted the sole offer in November 2021. A re-tender notification is still pending even though that tender was cancelled.