 This additional track completes a Standard Gauge Sunshine–Brooklyn–Tottenham rail triangle.This track was commissioned mid-2010.Based on the definition of a minimum top speed of 200 km/h in passenger service, High-speed rail in Australia does not yet exist, but there are proposals for high-speed rail (HSR) infrastructure in Australia (also known as very fast train projects) - several proposals have been investigated since the early 1980s.