Rail Wheel Squeal at Beecroft

This report on Transport NSW website discusses rail wheel squeal noise:
http://www.transport.nsw.gov.au/sites/default/files/b2b/sydneytrains/publications/2013%20Q1%20SydT%20EPL%2012208%20AoA%20Update%20v1.0.pdf
One paragraph says:
"Tranport for NSW Freight and Regional Development, in conjunction with Sydney Trains, has recently implemented best practice rail lubrication on the Main North railway line, including at Beecroft. Following implementation, the number of AoA exceedances reported to train operators has increased. Noise, however, has not increased, and the recent lubrication has reduced both the incidence and severity of curve squeal."
The report does not appear specifically to quantify the effect of recent lubrication.
Some 900 trains were monitored July through September, containing 151,558 axles of which 3,332 exceeded the authority's Angle of Attack criteria, believed to identify "wheel squeallers".  The report discusses corrective actions taken on "repeat offender" rail wagons, saying "repeat offenders" were identified and inspected in Septemer.  But this number of wagons discussed as being in that category seems to be tiny compared to the number of wagons that are heard to squeal as they go through Beecroft.  Let's hope things are improving.
Either way it is good to see action is being taken.