New Delhi, July 7 -- An agreement was signed between Delhi Metro and Chennai Metro Rail Limited (CMRL) today for Operation and Maintenance services for three corridors of Chennai Metro's Phase-II: Corridor-3 (Madhavaram Milk Colony to Siruseri SIPCOT-II Metro - Indigo Line), Corridor- 4 (Lighthouse to Poonamallee Bypass -Orange Line) and Corridor-5 (Madhavaram Milk Colony to Sholinganallur - Red Line) including Maintenance Depots at Madhavaram, Poonamallee & Semmancheri. As per the agreement, DMRC will provide Operation and Maintenance services for a period of approximately 15 years. The contract awarded Scope of work includes managing various Operations and Maintenance Services which mainly include train operations, station management, d...