S Travis Waller

Sch-Civil & Environmental Eng
Contact details:
(+61 2) 9385 5721
(+61 2) 9385 6139

Civil Engineering Building (H20)
Level 1, Room CE110
Kensington Campus

Advisian Professor of Transport Innovation

Director of the Research Centre for Integrated Transport Innovation (rCITI) in the School of Civil and Environmental Engineering


Research interest

  • Level 1: I develop mathematical representations of transport systems to support the planning and management of infrastructure.
  • Level 2: I develop new models for transport network performance that account for emerging applications spanning information, uncertainty and dynamics.
  • Level 3: I focus on dynamic traffic assignment, stochastic routing, network design, planning for ITS, adaptive equilibrium, network behaviour under information and bi-level optimization of transport networks.

Interest in engineering

Why did you get into engineering?

The main thing that got me into engineering generally was that I was always into puzzle solving. Engineering seemed like a lot of puzzle solving but with real world application.

What are your research goals?

My primary research goals are to enhance the mathematical underpinning for transport planning methods so that we have sound engineering principles, rather than just politics to determine how we design our transport infrastructure.

What do people not understand about what you do?

People often don't realize how much mathematical analysis and planning go on in our modern cities. There are actually sizable staffs of engineers that are analysing and forecasting and planning how to design, manage, and operate our infrastructure. 

Advice for prospective transport engineers

I would advise prospective transport engineers to focus on their analytical skills, but also how those skills tie into real world applications. For transport, we deal with humans, not electrons or information packets, and so humans have psychology and individual behaviour; and so you really have to get a wide range of skills, from engineering principles, to physics, economics, and human factors and psychology. Transport engineering really is about synthesizing and bringing together all of these interdisciplinary concepts into one field. 

Lectures/Courses taught

  • Transport Network Analysis
  • Infrastructure Engineering Systems

Research Associates

Number currently in lab:

  • 4 Research Associates

Research Students

Number currently in lab:

  • 18 PhD Students
  • 5 Master's Students
  • 1 Practicum Student
  • Number Ph.D. graduated: 16

Student Projects Current and Looking to Continue:

  • Real-time travel time prediction for motorways and motor way corridors
  • Accounting for reliability in ridership modelling
  • Regional dynamic transport network planning
  • Environmental impact of real-time traffic management

Professional Organisations and Consulting positions


  • American Society of Civil Engineers (ASCE), member
  • Institute for Operations Research and Management Sciences (INFORMS), member
  • Institute of Transportation Engineers (ITE), member
  • Transportation Research Board (TRB), member
  • American Society for Engineering Education (ASEE), member
  • Australian Institute of Traffic Planning and Management (AITPM), member

Editorial Boards

  • Computer Aided Civil and Infrastructure Engineering, 2012 - Present
  • Journal of Transportation Letters, 2009 - Present
  • Journal of Modern Transportation, 2010 – Present
  • Journal of ITS, 2011 – Present

Current Service Roles

  • Network Equilibrium Modelling Sub-Committee (ADB30(2)), Transportation Research Board (TRB), National Research Council, 2003 – present
  • Institute for Operations Research and Management Science (INFORMS), International Liaison to Asia, Australia, and New Zealand (elected), 2011 – present
  • Transport Specialist Advisory Group for Transport for NSW, Invited Member, 2012 – Present
  • Modelling Panel for Transport for NSW, Member (competitive selection), 2013 – Present
  • Special Committee for Travel Forecasting Resources (ADB45), Transportation Research Board (TRB), U.S. National Research Council, 2013 – Present
  • Transportation Demand Forecasting Committee (ADB40), Transportation Research Board (TRB), U.S.
  • National Research Council, 2006 – present
  • Committee on Innovations in Travel Demand Forecasting (ADB99B), Transportation Research Board
  • (TRB), U.S. National Research Council, 2011 – Present
  • International Activities (A0010), Transportation Research Board (TRB), U.S. National Research Council, 2012 – Present
  • Route-Choice and Spatial Behavior Sub-committee(ADB10(2)), 2004–Present

 Awards, Grants, Patents


  • Evans & Peck Professor of Transport Innovation (UNSW) – 2011 – Present
  • 2011 Hojjat Adeli Award for Innovation in Computing (awarded in 2012)
  • Certificate of Appreciation, Network Committee, Transportation Research Board – 2012
  • Endowed Warren Lecture Series (invited speaker), University of Minnesota – 2009
  • Fred Burggraf Award (based on published research paper) at the Transportation Research Board Annual Conference –2009
  • Phil M. Ferguson Teaching Fellowship in Civil Engineering (UT) 2008-2011
  • Annual New Faculty Award sponsored by the Council of University Transportation Centres and the
  • American Road and Transportation Builders Association, 2006
  • Fellow of Clyde E. Lee Endowed Professorship in Transportation Engineering (UT), 2006-2008
  • National Sciences Foundation Faculty Early Career Development Award, 2004
  • Selected by MIT’s Technology Review Magazine as one of the Top 100 Young (under 35) Innovators in Science and Engineering in the World (TR100), 2003
  • List of Teachers Ranked as Excellent at UIUC, 2002
  • Northwestern University Transportation Center Fellowship, 2000


  • S.T. Waller; Identification and Evaluation of Transformative Environmental Applications and Strategies; U.S. Dept. of Transportation (sub-contract from Booze Allen Hamilton); 2012-2014; approx. $1.3M
  • S. T. Waller, V. Dixit, M. Bliemer (USyd), and D. Del Favero; TRAvel Choice Simulation LABoratory (TRACSLab): A visualisation laboratory to study travel behaviour and drivers’ interactions; Australian Research Council (ARC) LIEF Grant; 2013-2014; approx. $690,000
  • S.T. Waller; A Collaboration to Develop and Deploy Novel Integrated Network Techniques to Enhance the NSW Transport System; Transport for New South Wales; 2013 – 2016; approx. $1.5M
  • S.T. Waller, V. Dixit, L. Gardner, B. Jeffreys (GoGet), T. Hossein Rashidi; Integrating Network Modelling with Observed Choice Data for Multi-Criteria Optimization of Complex Carshare Systems: Cost, Mobility and Transit Usage; Australian Research Council (ARC) Linkage Grant; 2013 – 2016; approx. $540,000
  • S.T. Waller, M. Bliemer (USyd), V. Dixit, M. Bell (USyd), A. Torday (TSS); Methodologies for the Incorporation of Congestion Propagation and System Reliability into Transport Network Models for Consistent Multi-Scale Planning; Australian Research Council (ARC) Linkage Grant; 2013 – 2016; approx. $720,000


  • Ph.D., Industrial Engineering & Management Sciences, Northwestern University, 2000

  • MSc., Industrial Engineering & Management Sciences, Northwestern University, 1999

  • BSc. Electrical Engineering, The Ohio State University 1997