TTC investigating after video shows subway doors stuck open on moving train

The Toronto Transit Commission is investigating what it calls "anincredibly serious situation" aftervideo surfaced online showing subway train doors stuck open as the vehicle travelled over theBloorStreet viaduct.

A passenger shot the video while ona Line 2 car around 6:30 p.m. Friday.

The passenger said the train doors remained open as the car travelled between Castle Frank andBroadviewstations.

TTC spokesman Brad Ross said that normally an open door on a moving subway would trigger a safety mechanism that would alert the driver and stop the train.

But the driver had taken the doors offlineafter an earlier malfunction, Ross said, so the emergency brakes did not activate.

"When it pulled away from the station, the inertiaand the propulsion of the train caused the doors to freewheel open," Ross said. "They hadn't been properly locked, from what we can tell."

Ross said the door should have been bothlocked and barricaded after it was taken offline.

"We need to interview the crew on Monday and get their take on exactly what procedures they followed or thought they may have followed because this is an incredibly serious situation," he said.

"We cannot have train doors open, obviously, when the train is in motion. Whether it's in a tunnel or crossing a bridge, it doesn't matter it's very, very unsafe."

Ross said the TTC will have more information on Monday.