The Central Railway will operate a 63-hour mega block from May 30 midnight for platform extension works on the Mumbai network, a move that will affect the services of local trains, known as the ‘lifeline of the city, and the work schedule of lakhs of commuters. As services of local as well as long-distance trains are expected to remain badly hit during the block period, the railways have appealed to commuters to avoid travelling in local trains, if not necessary.