From the article, at the bottom: "Correction: An earlier version of this story stated that the train's emergency brakes had a lock. It was an 'emergency stop' s

From the article, at the bottom: "Correction: An earlier version of this story stated that the train's emergency brakes had a lock. It was an 'emergency stop' signal." ...which still sounds bad, and I'm not sure of the difference. But it apparently wasn't quite the emergency brakes?