 On 6 November 2011 a passenger train derailed near Mittagong in the New South Wales Southern Highlands after hitting an abandoned ute which was left on the railway track after becoming bogged there.The northbound train was carrying nine passengers and three crew, but no one was hurt.On 24 November 2011 the commuter and freight rail line was thrown into chaos when a coal train derailed near Coalcliff and forced the closure of the only line between Thirroul and Waterfall.