He was the Director-General of the Department of Transport & Main Roads, in Queensland having assumed the office in 2013, and serving until June 2023.
[1] Scales resigned from Merseytravel in December 2011, to take up an appointment in the Queensland Public Sector.
[2][3] He joined TransLink in Brisbane, Australia, in March 2012 as Chief Executive Officer.
[4] In March 2013, Scales was appointed Director-General of the Queensland Department of Transport & Main Roads.
[5] Scales was appointed an Officer of the Order of the British Empire for services to transport.