RESEARCH INTERESTS: Multi-modal Transportation Network Modeling and Optimization


  1. Xidong Pi, Wei Ma, Zhen (Sean) Qian (2018) A General Formulation for Multi-modal Dynamic Traffic Assignment Considering Multi-class vehicles, Public Transit and Parking. Submitted to the 23rd International Symposium on Transportation and Traffic Theory, ISTTT 23.
  2. Xidong Pi, Wei Ma, Zhen (Sean) Qian (2018) Data-driven Mesoscopic Network Modeling with Cars and Trucks: A Case Study in Pittsburgh. Submitted for review.
  3. Wei Ma, Xidong Pi, Zhen (Sean) Qian (2018) Estimating Multi-class Dynamic Origin-destination Demand through A Forward-backward Algorithm on the Computational Graph. Submitted to Transportation Research Part C.
  4. Shuguan Yang, Wei Ma, Xidong Pi, Zhen (Sean) Qian (2018) Parking Occupancy Prediction Incorporating Spatio-Temporal Traffic Data from Multisource. To be submitted.
  5. Xidong Pi, Aaron Steinfeld, Yun Huang, Zhen (Sean) Qian (2018) Understanding Human Perception of Bus Fullness: An Empirical Study of Crowdsourced Fullness Ratings and Automatic Passenger Count Data. Transportation Research Record, 0361198118781398.
  6. Xidong Pi, Zhen (Sean) Qian (2017) A Stochastic Optimal Control Approach for Real-time Traffic Routing Considering Demand Uncertainties and Travelers’ Choice Heterogeneity. Transportation Research Part B: Methodological 104, 710-732.
  7. Xidong Pi, Jackson Whitmore, Amy Silbermann, Zhen (Sean) Qian (2017) Understanding Transit System Performance Using AVL-APC Data: An Analytics Platform with Case Studies for the Pittsburgh Region. Journal of Public Transportation 21 (2), 2.


  1. Xidong Pi, Sean Qian. (2018) Traffic Impact of CSX Pittsburgh Intermodal Rail Terminal and Mitigation Plans for McKees Rocks.
  2. Sean Qian, Xidong Pi, and Zhangning Hu. (2016) Mobility Data Analytics Center. To U.S. Department of Transportation, University Transportation Center.


  1. A Framework for Mesoscopic Bi-modal Traffic Flow Modeling and Simulation: Theories and Applications, to U.S. Department of Transportation, University Transportation Center.


  1. Xiaomao Wang, Xidong Pi, Hongwei Yang, Yuefeng Xie. (2014) A Method for Membrane Integrity Testing (in Chinese). CN104147937B.

Carnegie Mellon University, Pittsburgh