During the night, the fire brigade in Berlin-Mitte took a man off the track bed of the subway.
Although he was apparently unharmed, he was still taken to a hospital for observation, the police said.
The driver of a railcar had therefore seen the homeless man Wednesday morning, who may have slept in the escape trough below the platform, and alerted the rescue workers.
Berlin - According to Bahn, there are bulges like this at some train stations so that people who are in the track area and are surprised by the train can get to safety there.
Initially, no information could be given about the man's identity.
dpa