1. Senior Lecturer, Univ. of Technology Sydney Transport Research Centre, School of Civil and Environmental Engineering, UTS, Building 11, Broadway, Ultimo, NSW 2007, Australia (corresponding author). ORCID: .
2. Associate Professor, Research Centre for Integrated Transport Innovation (rCITI), School of Civil and Environmental Engineering, Univ. of New South Wales, Sydney, NSW 2052, Australia.
3. Alton and Sandra Cleveland Professor, Dept. of Civil Engineering, Center for Systems Science and Engineering, Johns Hopkins Whiting School of Engineering, 3400 North Charles St., Baltimore, MD 21218-2608.