Ottawa’s troubled O-Train will remain out-of-service this weekend, as RTG crews diligently inspect the Confederation Line. And while the root cause of the latest problem remains a mystery, how far are we from finding a clear solution to these stoppages? Andrew Pinsent chats with Peter Liu, a Professor of Mechanical and Areospace Engineering at Carleton University.

<p>Ottawa’s troubled O-Train will remain out-of-service this weekend, as RTG crews diligently inspect the Confederation Line. And while the root cause of the latest problem remains a mystery, how far are we from finding a clear solution to these stoppages? Andrew Pinsent chats with Peter Liu, a Professor of Mechanical and Areospace Engineering at Carleton University.</p>

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