Chennai, Oct. 11 -- In a major boost to rail connectivity aimed at easing the growing traffic congestion in the city, Prime Minister Narendra Modi launched the 14.64 km long first stretch of the Phase-II of the Chennai Metro Rail Project built at a cost of Rs 4,900 crore in the presence of Tamil Nadu Chief Minister Vijay.

Mr Modi and Vijay flagged off the first train between the Poonamallee-Vadapalani stretch of Phase II which featured a distinctive 3.7-km double-decker structure and advanced signalling systems designed to support driverless operations.

Later, both Mr Modi and Vijay, purchased tickets at the counter and travelled in the Metro train from Porur bypass station to Poonamallee bypass station, forming part of the first stretch,...