The TTC is cautioning riders against the kind of physical confrontation captured in an amateur video that shows a passenger shoving a man who appears to be deliberately blocking the subway door.

The video depicts the man, who appears angry or distressed, standing in the doorway preventing it from closing, although a TTC worker tries repeatedly to shut the doors.

Finally, another rider gets up and shoves the man backwards onto the platform, after which the person blocking the doors yells and begins kicking the departing train.

TTC spokesman Brad Ross said Monday the train operator was probably trying to get the man to step on or off the train so that it could move off the platform.

A passenger, he said, should have pushed the yellow alarm strip in the subway car. That would have prompted a transit employee to investigate and alerted police and fire crews to the situation.

“We don’t want our passengers to get into physical altercations with anybody on the system. We prefer that police or transit enforcement officers deal with these situations,” Ross said.

Although the TTC tries to discourage riders from pushing the yellow passenger assist alarms if they feel sick or faint — instead, they’re asked to get off and seek help — the incident shown on the video is exactly the sort of situation when those alarms should be triggered, he said.

Ross said the video was shot at Davisville Station about 11:30 p.m. Saturday.

After the incident, police were called to the scene and arrested the man.