悉尼M5高速公路东向隧道因一个故障通风扇需要更换，周三早期被关闭超过6小时，导致超过13公里的车流备堤1。该隧道共配置147个通风扇，故障发生在约早上4时16分被发现1。运营商Transurban在约上午5时后做出关闭决定，以进行维修工作1。
Transurban总经理Denise Kelly表示"安全是第一位的"1，说明公司因安全考量决定立即更换故障扇。这次事件反映出该隧道自2001年完成以来长期存在的运营问题1。新南威尔士州州长Chris Minns随后表示政府将向Transurban寻求其维护计划的说明，以及重复发生类似事故可能性的答复1。
A malfunctioning ventilation fan forced authorities to close Sydney's M5 eastbound tunnel for over six hours on Wednesday morning, creating a traffic backup stretching more than 13 kilometres during peak commute hours.1 The fault was identified around 4:16 am, with the closure implemented shortly after 5 am to allow operator Transurban to replace the defective unit immediately.1
Transurban cited safety as the primary reason for the urgent repair, with General Manager Denise Kelly stating that "safety is the priority."1 The eastbound tunnel contains a total of 147 ventilation fans, and the decision to conduct the replacement during morning rush hour resulted in significant traffic congestion affecting thousands of commuters.1 Premier Chris Minns subsequently indicated that the government would seek answers from Transurban regarding maintenance protocols and the likelihood of similar incidents recurring.1
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