Officers were spotted on the platform of the 4, 5 and 6 trains at the Brooklyn Bridge/City Hall station on Tuesday morning.
NYPD Transit posted video of more police at 149th & Grand Concourse in the Bronx during "evening rush."
Police say they are making sure people are practicing social distancing while waiting for trains and riding on them.
Authorities say it appears that most New Yorkers are staying home and only using the subway system for essential travel.
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