I Told You Not To Lean Against The Door!

Next to getting your foot run over by an 18-wheeler while waiting to cross at an intersection, this is probably everyone’s second-worst fear:

A subway train roared underground with some doors open, sources told the Daily News yesterday, describing a frightening ride for the passengers.

The Manhattan-bound A train left the Grant Ave. station in Brooklyn with some doors open late Saturday night and didn’t stop until the first few cars reached the next station, at Euclid Ave., a transit source said.

“The doors were in fact open,” another source said.

The Transit Authority has launched an investigation, said TA spokesman Paul Fleuranges.

“This incident should NOT have happened,” Fleuranges said in a statement. “If it happened as you describe it . . . then there were some very serious violations of our operating rules and procedures. We are all relieved there were no injuries to our customers or crew.”

The train was taken to a TA yard for a battery of tests, and the crew was taken off the rails, Fleuranges said. Both the motorman and conductor were given drug and alcohol tests, a standard investigatory move.

According to the transit source, the conductor told supervisors that he left his cab at the Grant Ave. station to see what was preventing a door, or doors, from closing. As he walked from car to car, the train took off, he said. After some difficulty, the conductor contacted the motorman by intercom and the train was halted.