MUMBAI -- Plans to build a key subway line between Mumbai's two main business districts are getting back on track after years of delays caused by political wrangling, potentially offering relief to some of the millions of commuters who cram onto the sprawling city's aboveground trains each day.
But critics say huge cost overruns and the delayed timetable on Metro Line 3, the financial hub's third underground rail route, underscore the often lethargic pace of infrastructure projects in India, especially compared to the far speedier record of its neighbor and sometime rival China.
