1. Geotechnical Design Engineer, Geotesta Pty Ltd., Level 1, 7 Business Park Dr., Notting Hill, VIC 3168, Australia; formerly, Research Associate, School of Civil Engineering, Faculty of Engineering, Univ. of Wollongong, Wollongong City, NSW 2522, Australia.
2. Distinguished Professor and Director, Transport Research Centre, Univ. of Technology Sydney, NSW 2007, Australia; Founding Director, ARC Training Centre for Advanced Technologies in Rail Track Infrastructure (ITTC-Rail), Univ. of Wollongong, Wollongong City, NSW 2522, Australia (corresponding author).
3. Professor, School of Civil and Environmental Engineering, Univ. of Technology Sydney, NSW 2007, Australia.
4. Chief Technical Principal and General Manager Technical Excellence, SMEC-Australia and New Zealand Div., Level 6, 480 St Pauls Terrace, Fortitude Valley, QLD 4006, Australia.
5. Managing Director, Menard, 13-15 Lyonpark Rd., Macquarie Park, NSW 2113, Australia.