Danny Hay was on his way to work Sunday morning when he saw a young man on the tracks at the Delancey Street station in Manhattan.
The Daily News says Hay got on his radio and called for help. When no one heard him he ran up to the train booth and told an attendant to cut the power.
By this time two good Samaritans also were on the tracks.
When Hay noticed the power was still on he ran to the end of the station and flashed a light at the oncoming train.
The train operator noticed it and stopped just in time.
Information from: Daily News, http://www.nydailynews.com