- Frederick R. Dickerson Chair and Professor, School of Civil and Environmental Engineering, Georgia Institute of Technology: 08/2018 – present
- Professor, H. Milton Stewart School of Industrial and Systems Engineering, Georgia Institute of Technology: 08/2018 – present
- Principal Research Faculty, Georgia Tech Research Institute: 08/2018 – present
- Foreign Director, Academic Committee Board, Key Laboratory of Intelligent Air-Ground Cooperative Control (IACC) for Universities in Chongqing, China: 01/2019 – present
- Adjunct Professor, School of Civil Engineering, Purdue University: 09/2018 – present
- Thrust Lead, Purdue Center for Resilient Infrastructures, Systems, and Processes (CRISP); thrust lead for “Large-Scale Civil Infrastructures”: 10/2017 – 07/2018
- Purdue Policy Research Institute (PPRI) Affiliate: 02/2017 – 07/2018
- Associate Director, USDOT Center for Connected and Automated Transportation (CCAT), USDOT Federal Region 5 University Transportation Center: 12/2016 – 07/2018
- Jack and Kay Hockema Professor in Civil Engineering, Purdue University: 12/2015 – 07/2018
- Chair, Committee on Transportation Network Modeling, Transportation Research Board (TRB), National Academies: 04/2007 – 04/2013
- Director, NEXTRANS Center, USDOT Federal Region 5 University Transportation Center: 08/2006 – 07/2018
- Professor, School of Civil Engineering, Purdue University: 08/2006 – 07/2018
- Associate Professor, School of Civil Engineering, Purdue University: 08/2000 – 07/2006
- Assistant Professor, School of Civil Engineering, Purdue University: 08/1994 – 07/2000