1986年8月,澳大利亚新南威尔士州铁路开始进行一项巨大的线路改造工程。投资4.39亿澳元,对悉尼地区的708km线路进行更新改造。主要工作包括清筛道床、铺设混凝土轨枕、更换扣件、改善排水设备和电气化设备。这样,不仅可以提供一个稳定的线路结构,而且还可以提高所有运营列车的速度,减少维修量,改善乘座的舒适程度,降低噪音,为旅客和沿线的居民带来更好的效益。这项工程,计划经过10年多的时间完成。 In August 1986, the rail network in New South Wales, Australia, started a huge circuit renovation project. Invest 439 million Australian dollars to update 708km line in Sydney. The main tasks include clearing the track bed, laying concrete sleepers, replacing fasteners, improving drainage and electrification equipment. This not only provides a stable line structure, but also increases the speed of all trains operating, reduces the amount of repairs, improves seating comfort, reduces noise and benefits passengers and residents along the route. This project, the plan after more than 10 years to complete.