Australia's worst rail disaster occurred here in 1977. It is commemorated as the Day of the Roses.
"The Granville rail disaster occurred on 18 January 1977 at Granville, a suburb in western Sydney, Australia, when a crowded commuter train derailed, running into the supports of a road bridge that collapsed onto two of the train's passenger carriages. It was the worst rail disaster in Australian history: 83 people died, more than 210 were injured, and 1,300 were affected." wiki