The Transportation Safety Board is investigating after 80 uncontrolled rail cars rolled a quarter kilometre along a track at one of Canadian Pacific Railway’s main marshaling yards in Canada.
The incident happened Tuesday at 3 p.m. at Alyth yard in southeast Calgary.
TSB said the movement of the train — weighing over 9,500 tonnes — didn’t cause any derailments or injuries. Most of the freight cars were loaded when the train rolled away, but there were no dangerous or explosive goods on board.
It’s unclear what caused the incident.
In July of 2013, 47 people were killed when a runaway train derailed and exploded in downtown Lac-Mégantic, Que..
A TSB investigation later concluded 18 factors led to the disaster, including poor training, mechanical problems and sloppy safety oversight.
In June, the TSB called on Transport Canada to modernize training and qualification rules for railway employees after another runaway train incident in 2016 near Toronto.
In that case, the board found automatic brakes had not been engaged by two employees assembling a train which contained flammable liquid.
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