Dr Prakash Ranjitkar

PhD, MEng, BEng (Civil)


Dr Prakash Ranjitkar is a Senior Lecturer in Transportation Engineering in the Department of Civil and Environmental Engineering and a founding member of the Transportation Research Centre (TRC) at the University of Auckland, New Zealand.

Prakash has over 19 years of academic, research and consulting work experience in a range of transport and other infrastructure engineering projects. He has strong research interests in modelling and simulation of traffic, intelligent transportation system, traffic operations and management, traffic safety, human factors and applications of advanced technologies in transportation.

Prior to joining the University of Auckland in 2007, he worked for the University of Delaware in USA (2006-2007) and before that in Hokkaido University in Japan (2001-2006). Prakash is a member of IPENZ Transportation Group and Institute of Transportation Engineers (USA). He is an Editorial Board Member for the Open Transportation Journal and reviewer of Journal of Transportation Research Board, Journal of Eastern Asia Society for Transportation Studies, Journal of Intelligent Systems and IEEE Transactions of Intelligent Transportation Systems.



PhD, Transportation Engineering Hokkaido University, Japan (2004)
MEng, Transportation Engineering, Asian Institute of Technology, Thailand (1999)
BEng, Civil Engineering, Tribhuvan University, Nepal (1994)

Research | Current

  • Traffic operations and management
  • Intelligent transportation systems
  • Network modelling and simulation
  • Traffic safety and human factors
  • Application of advanced technologies in transportation

Teaching | Current

  • CIVIL 361 - Transportation Engineering 2
  • CIVIL 758 - Traffic Systems Planning and Design
  • CIVIL 761 - Planning and Design of Transport Facilities
  • CIVIL 762 - Transportation Planning

Postgraduate supervision

PhD students

  • Urie Bezuidenhout “Influence of a new signal offset optimiser on drivers’ behaviour at traffic signals” (from 2010, part-time)
  • Neha Sharma "Developing an improved adaptive traffic control system" (from 2012, part-time)
  • Frank Lehmann “Optimizing Merging Algorithm using Model View Control Approach” (from 2014)
  • Mohammad Aghababaei “Resilience-base risk assessment using spatial data and GIS analysis” (from 2016)
  • Mujaddad Afjal “Urban road network resilience” (from 2016)
  • Rahul Kadam “Study of Travel Behavior of Non-Motorized vehicles in urban areas” (from 2017)


  • Mohsin Chaudhry “Capacity analysis of signalized intersections" (completed in 2014)
  • Soroush Rashidi “Modelling and prediction of bus travel time using AVL data” (completed in 2015)
  • Duo Li “Towards an efficient and equitable motorway system using ramp metering and variable speed limits” (completed in 2015)

Areas of expertise

  • Optimisation of intelligent transportation systems measures such as ramp meters and variable speed limits, assessing reliability of V2V, V2I and I2I communications.

  • Modelling and simulation of transport facilities using macroscopic, mesoscopic and microscopic traffic simulation tools.
  • Improving performance of adaptive traffic control systems.

  • Improving methods for highway capacity analysis.

  • Understanding human factors in traffic flow including car-following and lane changing behaviour of drivers.

  • Accident prediction modelling of motorways.

  • Transport network reliability and travel time study.

  • Applications of artificial intelligence based methods in transportation engineering.

Committees/Professional groups/Services

Professional affiliations

  • Graduate Member of Institute of Professional Engineers New Zealand (IPENZ)
  • Member of ITS New Zealand
  • Member of Institute of Transportation Engineers
  • Member of Eastern Asia Society for Transportation Studies

Selected publications and creative works (Research Outputs)

  • Li, D., Ranjitkar, P., Zhao, Y., Bai, Q., & Chen, X. (2017). Improving motorway performance using variable speed limits. Proceedings of the Institution of Civil Engineers – Transport, 170 (6), 338-345. 10.1680/jtran.16.00046
  • Li, M., Wang, W., Ranjitkar, P., & Chen, T. (2017). Identifying drunk driving behavior through a support vector machine model based on particle swarm algorithm. Advances in Mechanical Engineering, 9 (6)10.1177/1687814017704154
  • Li, D., Ranjitkar, P., Zhao, Y., Yi, H., & Rashidi, S. (2017). Analyzing pedestrian crash injury severity under different weather conditions. Traffic Injury Prevention, 18 (4), 427-430. 10.1080/15389588.2016.1207762
  • Bezuidenhout, J. J., Ranjitkar, P., & Dunn, R. (2016). Combining driver response with cyclical queue optimisation over selected corridors. Journal of Advanced Transportation, 50 (5), 857-876. 10.1002/atr.1379
    URL: http://hdl.handle.net/2292/30119
  • Li, D., Ranjitkar, P., & Zhao, Y. (2016). Efficiency and equity performance of a coordinated ramp metering algorithm. PROMET - Traffic&Transportation, 28 (5), 507-515. 10.7307/ptt.v28i5.2033
  • Li, D., Ranjitkar, P., & Rashidi, S. (2015). Analyzing mobility benefits of variable speed limits motorways. Traffic Engineering and Control, 56 (4), 305-309. Related URL.
  • Li, D., & Ranjitkar, P. (2015). A fuzzy logic-based variable speed limit controller. Journal of Advanced Transportation, 49 (8), 913-927. 10.1002/atr.1320
    URL: http://hdl.handle.net/2292/30121
  • Rashidi, S., & Ranjitkar, P. (2015). Bus dwell time modeling using gene expression programming. Computer-Aided Civil and Infrastructure Engineering, 30 (6), 478-489. 10.1111/mice.12125

Contact details

Primary office location

New Zealand