Hours before the wheel derailed, the TSB says there was an axle failure on one vehicle that meant the operator would have seen multiple wheel slip warnings at about 1:25 p.m. — but they kept the train going. The white arrow shows the damaged cartridge assembly on an Ottawa LRT vehicle that derailed. The city is now more closely inspecting underneath its light rail trains, according to the TSB, which points out Via Rail trains have systems that can measure the heat inside its wheels to warn of potential problems. LRT currently shut downThe Confederation Line is currently shut down because another train derailed around Tremblay station Sept. 19. The regular 90-day timeline for these types of investigations would see the final report for August's derailment released in mid-November.

Source: CBC News September 27, 2021 17:01 UTC