[19] The PSDs would have been approximately 54 inches (140 cm) high and would have been coordinated with the location of the subway car doors when a train was in the station.

[20] To ensure that the subway car is precisely lined up with the doors, a wayside-only berthing system would be installed.

The platform edges and topping would be removed and replaced so that they align with the sills of the train doors and to be in compliance with the Americans with Disabilities Act of 1990.

To ensure that people do not get trapped in between the subway car doors and the PSDs, sensors and CCTV cameras would be installed with monitors at the center and front of the platforms visible to the train operator and conductor.

[21] In June 2018, the $30 million for the platform edge door pilot program was diverted to another project along the Canarsie Line: the installation of elevators at the Sixth Avenue station.

[22] In February 2022, the MTA announced that the PSD installation at Third Avenue would proceed as part of a pilot program involving three stations.

[23][24] The announcement came after several people had been shoved onto tracks, including one incident that led to a woman's death at another station.