India, Feb. 15 -- Saturday afternoon's incident of a concrete slab collapsing from the elevated Metro -4 site in Mulund has angered Mumbaikars, with most of them raising questions over safety protocols followed by Mumbai Metropolitan region Development Authority (MMRDA) and its contractors who deploy workers at various metro sites in the Mumbai Metropolitan Region (MMR).

While citizens have underscored the laxity of contractors and general consultants "who are paid crores of public money to monitor the works", urban planners, infrastructure and transport experts have questioned the protocols being followed by them.

MMRDA is currently carrying out works on eight different metro corridors that are part of its overall 337-kilometer network...