Platform edge barriers have now been installed at 56 New York City subway stations as part of an ongoing Metropolitan Transportation Authority safety initiative, with the goal of installing the barriers at more than 100 of the subway system’s 472 stations this year.

The MTA has installed platform barriers at 56 subway stations in three New York City boroughs, officials said Friday. The metal barriers were placed on the Nos. 1, 2, 3, 4, 5, 6, and 7 lines as well as on the E,

The victim was inside the 42nd St.-Times Square station on the mezzanine above the N/Q/R platform around 6:45 p.m. when he argued with the attacker, cops said.