NEW YORK — Subway riders have additional hours they can ride the rails after the Metropolitan Transportation Authority began its shorter overnight closures Monday.

The system will shut down for cleaning and disinfecting from 2 a.m. to 4 a.m. instead of the usual 1 a.m. to 5 a.m. window.

The four-hour closure had been in effect since May. It is unclear when the subway will resume full service overnight.

Interim MTA President Sarah Feinberg told NY1 that about a couple thousand New Yorkers had been missing service during the overnight shutdown, many of whom turned to buses.

Subway ridership is at about 30%, according to Feinberg. She said that’s taken a huge hit on revenues and finances.

Feinberg is hopeful that as restaurants stay open later and more businesses reopen, numbers will start to climb. She also said confidence is key to restoring ridership.

“They have to feel confidence in the system — confidence that service is good and reliable, confidence that the system is safe and secure from COVID, but also from crime,” Feinberg said on “Mornings On 1.”

While about 600 more police officers have been deployed at subway stations to combat crime, Feinberg said she’d like to see a greater overall NYPD presence.

“I’d like to see more police officers,” said Feinberg. “I’d like to get back to the level where we were a couple of decades ago where NYPD took over policing the subway system. I’d also like to see a uniformed presence on buses sometimes.”