Alstom is set to give the rolling stock certificate to the Mumbai Metropolitan Region Development Authority on Friday, following which MMRDA will move on to the last phase of safety trials to commission a part of Metro 2A and 7 lines in the city’s western suburbs
A rolling stock certificate attests the fitness of a train, which is also referred to as rolling stock
https://www.freepressjournal.in/mumbai/mumbai-metro-2a-and-7-to-enter-final-leg-of-trials
Source: The Free Press Journal
