India, April 7 -- The Delhi Metro Rail Corporation (DMRC) on Sunday announced it will operate India's first three-coach train corridor on the upcoming Lajpat Nagar to Saket-G Block line - a route that has received approval from the Central and state governments under the Metro phase four expansion project, but work on which is yet to begin.

The corridor - an extended spur of the under-construction Golden Line (Aerocity to Tughlakabad) - is set to be around 8 km in length and will have eight stations. DMRC earlier operated four-coach, six-coach, and eight-coach trains. However, the decision to have much smaller, three-coach trains is to cater specifically to short-distance urban travel. The corridor is expected to be completed by March 20...