1. Sean Qian, Shuguan Yang, 2018, A non-sensor solution for effective and inexpensive parking management: payment, reservation, and dynamic pricing (provisional)
  2. Sean Qian, Pinchao Zhang, 2019, Using time-of-day electricity usage data to predict morning roadway congestion (provisional)


  1. Sean Qian, Shuguan Yang, Allison Plummer (2019) "High-resolution Traffic Sensing with Autonomous Vehicles", White Paper. [PDF]

Journal Publications

  1. Corey Harper, Sean Qian, Costa Samaras, (2020) "Improving Short-term Travel Speed Prediction with High Resolution Spatial and Temporal Rainfall Data",  ASCE Journal of Transportation Engineering, accepted and forthcoming.
  2. Rick Grahn, Chris Hendrickson, Sean Qian, Corey Harper, (2020) "Societal impacts of a complete street project in a mixed urban corridor: A case study in Pittsburgh, PA", ASCE Journal of Infrastructure Systems, accepted and forthcoming.
  3. Kan Guo, Yongli Hu, Zhen Qian, Yanfeng Sun, Junbin Gao, Baocai Yin, (2020) "Dynamic Graph Convolution Network for Traffic Forecasting Based on Latent Network of Laplace Matrix Estimation", accepted and forthcoming, IEEE Transactions on Intelligent Transportation Systems. [URL]
  4. Wei Ma, Xidong Pi, Sean Qian, (2020) "Estimating multi-class dynamic origin-destination demand through a forward-backward algorithm on computational graphs", Transportation Research Part C, Vol.119, 102747. [URL]
  5. Weiran Yao, Sean Qian. (2020) "Learning to Recommend Signal Plans Under Incidents With Real-time Traffic Prediction", Transportation Research Record, Vol.2674 (6), pp.45-59. [URL]
  6. Pinchao Zhang, Sean Qian, (2020) "Path-based system optimal dynamic traffic assignment: a subgradient approach", Transportation Research Part B, Vol.134, pp.41-63. [URL]
  7. Xia Zhao, Yong Zhang, Yongli Hu, Shun Wang, Yunhui Li, Sean Qian, Baocai Yin, (2020) "Interactive Visual Exploration of Human Mobility Correlation Based on Smart Card Data", accepted and forthcoming, IEEE Transactions on Intelligent Transportation Systems. [URL]
  8. Xia Zhao, Yong Zhang, Yongli Hu, Sean Qian, Hao Liu, Baocai Yin, (2020) "Modeling Relation Proximity of Passengers Using Public Transit Smart Card Data", accepted and forthcoming, IEEE Transactions on Intelligent Transportation Systems. [URL]
  9. Kan Guo, Yongli Hu, Sean Qian, Yanfeng Sun, Junbin Gao, Baocai Yin, (2020) "An Optimized Temporal-Spatial Gated Graph Convolution Network for Traffic Forecasting", accepted and forthcoming, IEEE Transactions on Intelligent Transportation Systems. [URL]
  10. Kan Guo, Yongli Hu, Zhen Qian, Hao Liu, Ke Zhang, Yanfeng Sun, Junbin Gao, Baocai Yin, (2020) "Optimized Graph Convolution Recurrent Neural Network for Traffic Prediction", accepted and forthcoming, IEEE Transactions on Intelligent Transportation Systems. [URL]
  11. Rick Grahn, Sean Qian, Chris Hendrickson, Scott Matthews, (2020) "Are travelers substituting between transportation network companies (TNC) and public buses? A case study in Pittsburgh", accepted and forthcoming, Transportation. [URL] 
  12. Wei Ma, Sean Qian, (2020) "Measuring and reducing the disequilibrium levels of dynamic networks with ride-sourcing vehicle data", Transportation Research Part C, Vol. 110, pp.222-246. [URL]
  13. Amir Ghiasi, Omar Hussain, Zhen (Sean) Qian, Xiaopeng Li, (2020) "Lane Management with Variable Lane Width and Model Calibration for Connected Automated Vehicles", Journal of Transportation Engineering, Part A: Systems, Vol.146 (3) 04019075 [URL]
  14. Pinchao Zhang, Sean Qian, (2019) "Managing traffic with raffles", Transportation Research Part C, Vol. 107, pp.490-509 [URL]
  15. Matthew Battifarano, Sean Qian, (2019) "Predicting real-time surge pricing of ride-sourcing companies",  Transportation Research Part C, Vol.107, pp. 444-462 [URL]
  16. Shuguan Yang, Wei Ma, Xidong Pi, Sean Qian, (2019) "A deep learning approach to real-time parking occupancy prediction in transportation networks incorporating multiple spatio-temporal data sources",  Transportation Research Part C, Vol.107, pp. 248-265 [URL]
  17. Xidong Pi, Wei Ma, Sean Qian, (2019) "A general formulation for multi-modal dynamic traffic assignment considering multi-class vehicles, public transit and parking", Transportation Research Part C, Vol.104, pp. 369-389 [URL]
  18. Rick Grahn, Corey Harper, Chris Hendrickson, Sean Qian, Scott Matthews. (2019) "Socioeconomic and Usage Characteristics of Transportation Network Company (TNC) Riders", Transportation, accepted and forthcoming [URL]
  19. Yang Wang, Yong Zhang, Sean Qian, Shaofan Wang, Yongli Hu, Baocai Yin, (2019) "Multi-Source Traffic Data Reconstruction Using Joint Low-Rank and Fundamental Diagram Constraints", IEEE Intelligent Transportation Systems Magazine, Vol. 3, pp.221-234 [URL]
  20. Shuguan Yang, Sean Qian. (2019) "Understanding and predicting highway travel time with spatio-temporal features of network traffic flow, weather and incidents", IEEE Intelligent Transportation Systems Magazine, Vol. 3, pp.12-28 [URL]
  21. Xia Zhao, Yong Zhang, Hao Liu, Shaofan Wang, Sean Qian, Yongli Hu, Baocai Yin, (2019) "Detecting Pickpocketing Gangs on Buses with Smart Card Data", IEEE Intelligent Transportation Systems Magazine, Vol. 3, pp.181-199 [URL]
  22. Guohui Zhang, Cong Chen, Panos Prevedouros, Qiong Wu, Sean Qian, Tianwei Ma, Zhenning Li, Yusheng Ci, (2019) "Investigation of driver injury severities in rural single-vehicle crashes under rain conditions using mixed logit and latent class models", Accident Analysis and Prevention, Vol.124, 219-229 [URL]
  23. Wei Ma, Sean Qian. (2018) "Estimating multi-year 24/7 origin-destination demand using high-granular multi-source traffic data", Transportation Research Part C, Vol.96, pp.96-121. [URL]
  24. Zhenning Li, Cong Chen, Yusheng Ci, Guohui Zhang, Qiong Wu, Cathy Liu, Sean Qian. (2018) "Examining driver injury severity in intersection-related crashes using cluster analysis and hierarchical Bayesian models", Accident Analysis and Prevention, Vol. 120, pp 139-151 [URL]
  25. Pinchao Zhang, Sean Qian. (2018) "User-centric interdependent urban systems: using time-of-day electricity usage data to predict morning roadway congestion", Transportation Research Part C, Vol.92, pp.392-411. [URL]
  26. Wei Ma, Sean Qian. (2018) "Statistical inference of probabilistic origin-destination demand using day-to-day traffic data", Transportation Research Part C, Vol.88, pp. 227-256. [URL]
  27. Xidong Pi, Sean Qian, Aaron Steinfeld, Yun Huang. (2018) "Understanding Human Perception of Bus Fullness: An Empirical Study of Crowdsourced Fullness Ratings and Automatic Passenger Counter Data", Transportation Research Record, Vol.2672(8), pp.475-484. [URL]
  28. Wei Ma, Sean Qian. (2018) "A Generalized Single-Level Formulation for Origin–Destination Estimation Under Stochastic User Equilibrium", Transportation Research Record, Vol. 2672(48), pp.58-68. [URL]
  29. Xidong Pi, Mark Egge, Jackson Whitmore, Amy Silbermann, Sean Qian. (2018) "Understanding Transit System Performance Using APC/AVL Data: a Transit Data Analytics Platform With a Case Study for the Pittsburgh Region",  Journal of Public Transportation, Vol. 21(2), pp. 19-40 [URL]
  30. Amir Ghiasi, Omar Hussain, Sean Qian, Xiaopeng Li. (2017) "A Mixed Traffic Capacity Analysis and Lane Management Model for Connected Automated Vehicles: A Markov Chain Method", Transportation Research Part B, Vol.106, pp. 266-292. [URL]
  31. Xidong Pi, Sean Qian. (2017) "A Stochastic Optimal Control Approach for Real-time Traffic Routing Considering Demand Uncertainties and Travelers’ Choice Heterogeneity." Transportation Research Part B, Vol.104, pp.710-732. [URL] 
  32. Wei Ma, Sean Qian. (2017) "On the Variance of Recurrent Traffic Flow for Statistical Traffic Assignment", Transportation Research Part C, Vol.81, pp.57-82. [URL]
  33. Shuguan Yang, Sean Qian. (2017) "Turning meter transactions data into occupancy and payment behavioral information for on-street parking". Transportation Research Part C, Vol.78, pp.165-182. [URL]
  34. Yiming Gu, Sean Qian, Guohui Zhang. (2017) "Traffic State Estimation for Urban Road Networks Using A Link Queue Model." Transportation Research Record, Vol.2623, pp.29-39. [URL]
  35. Sean Qian, Jia Li, Xiaopeng Li, Michael Zhang, Haizhong Wang. (2017) "Modeling heterogeneous traffic flow: a pragmatic approach." Transportation Research Part B, Vol.99, pp. 183-204. [URL]
  36. Mark Egge, Sean Qian, Amy Silbermann. (2017) "Effect of Fare Policies on Dwell Time: Case Study for the Pittsburgh Region", Transportation Research Record, Vol. 2649, pp. 20-27. [URL]
  37. Yingjie Zhang, Sean Qian, Beibei Li, Frances Sprei. (2016) "The impact of car specifications, prices, and incentives for electric vehicles in Norway: choices of heterogeneous consumers", Transportation Research Part C, Vol. 69, pp. 386–401. [URL]
  38. Avi Mersky, Frances Sprei, Costantine Samaras, Zhen (Sean) Qian. (2016) "Effectiveness of incentives on electric vehicles adoption in Norway", Transportation Research Part D, Vol.46, pp. 56-68. [URL]
  39. Cong Chen, Guohui Zhang, Zhen Qian, Rafigul Tarefder. Zong Tian, (2016) "Investigating Driver Injury Severity Patterns in Rollover Crashes Using Support Vector Machine Models". Accident Analysis & Prevention, Vol.90, pp. 128-139. [URL]
  40. Yiming Gu, Sean Qian, Feng Chen. (2016) "From Twitter to Detector: Real-time incident detection using social media data", Transportation Research Part C, Vol. 67, pp.321-342. [URL]
  41. Xiao Chen, Sean Qian, Ram Rajagopal, Todd Stiers, Christopher Flores, Robert Kavaler, Floyd Williams (2016) "A Parking Sensing and Information System: Sensors, Deployment, and Evaluation", Transportation Research Record, Vol. 2559, pp.81-89. [URL]
  42. Yiming Gu, Sean Qian, Xiao-feng Xie, Stephen Smith. (2016) "An unsupervised learning approach for analyzing traffic impacts under arterial road closures: case study of East Liberty in Pittsburgh". Journal of Transportation Engineering ASCE, Vol.142 (9). [URL]
  43. Haizhong Wang, Lu Liu, Shanjiang Dong, Zhen (Sean) Qian, Heng Wei (2015), "A novel work zone short-term vehicle-type specific traffic speed prediction model through the hybrid EMDARIMA framework", Transportmetrica B: Transport Dynamics, Vol. 4(3), pp.159-186. [URL]
  44. Arbi Tamarazian, Zhen (Sean) Qian, Ram Rajagopal, (2015) "Where is my parking spot? On-line and off-line prediction of time-varying parking occupancy", Transportation Research Record: Journal of the Transportation Research Board, Vol. 2489, pp. 77-85. [URL]
  45. Zhen (Sean) Qian and Ram Rajagopal. (2015) "Optimal dynamic pricing for morning commute parking", Transpormetrica A: Transport Science, Vol. 4(11), pp 291-316. [URL]
  46. Yongxi Huang, Shengyin Li, Zhen (Sean) Qian, (2015) "Optimal Deployment of Alternative Fueling Stations on Transportation Networks Considering Deviation Paths", Network and Spatial Economics, Vol 15, pp.183-204 [URL]
  47. Zhen (Sean) Qian, Ram Rajagopal, (2014) “Optimal dynamic parking pricing for morning commute considering expected cruising time”, Transportation Research Part C,  Vol. 48, pp. 468-490 (also accepted for poster presentations in the 20th International Symposium on Transportation and Traffic Theory, a prestigious peer-viewed series since 1959). [URL]
  48. Robert Lim, Zhen (Sean) Qian, Michael Zhang. (2014) "Development of a Freight Generation Model With an Application to California", International Journal of Transportation Science and Technology, Vol.3(1), pp.19-38. [URL]
  49. Zhen (Sean) Qian, Ram Rajagopal. (2014) "Optimal occupancy-driven parking pricing under demand uncertainties and traveler heterogeneity: a stochastic control approach", Transportation Research Part B, Vol.67, pp.144-165. [URL]
  50. Haizhong Wang, Lu Liu, Zhen (Sean) Qian, Heng Wei, Shanjiang Dong (2014), "Empirical Mode Decomposition-Autoregressive Integrated Moving Average Hybrid Short-Term Traffic Speed Prediction Model", Transportation Research Record, Vol. 2460 pp. 66-76 [URL]
  51. Feng Xiao, Zhen (Sean) Qian, Michael Zhang, (2013) “Managing bottleneck congestion with tradable credits.”,  Transportation Research Part B, Vol 56, pp. 1-14 [URL]
  52. Michael Zhang, Marco Nie and Zhen (Sean) Qian, (2013) "Modeling network flow with and without link interactions: the cases of point queue, spatial queue and CTM", Transportmetrica B: Transport Dynamics, Vol. 1(1), pp. 33-51 [URL]
  53. Zhen (Sean) Qian, Michael Zhang, (2013) “The morning commute problem with heterogeneous travelers: the case of continuously distributed parameters”, Transportmetrica,  Vol. 9(2) [URL]
  54. Zhen (Sean) Qian, Michael Zhang, (2013) “A hybrid route choice model for dynamic traffic assignment”, Networks and Spatial Economics,  Vol.13(2), pp 183-203  [URL]
  55. Zhen (Sean) Qian, Michael Zhang, (2013), "Full Closure or Partial Closure? Evaluation of Construction Plans for the I-5 Closure in Downtown Sacramento.", Journal of Transportation Engineering ASCE, Vol. 139(3), pp 273-286 [URL]
  56. Zhen (Sean) Qian, Michael Zhang, (2012) “On centroid connectors in static traffic assignment: their effects on flow patterns and how to optimize their selections”, Transportation Research Part B, Vol. 46(10), pp 1489-1503 [URL]
  57. Zhen (Sean) Qian, Feng Xiao, Michael Zhang(2012) “Managing morning commute with parking”, Transportation Research Part B, Vol.46(7), pp. 894-916 [URL]
  58. Zhen (Sean) Qian, Wei Shen, Michael Zhang, (2012) “System-optimal dynamic traffic assignment with and without queue spillback: its path-based formulation and solution via approximate path marginal cost”, Transportation Research Part B, Vol.46(7), pp. 874-893 [URL]
  59. Michael Zhang, Yi-ru Chen, Robert Lim, Zhen (Sean) Qian, (2012), "What happens when a major freeway is closed for repair? The case of Fix-I5 in downtown Sacramento", Transportation Research Record, Vol. 2278, pp.134-144 [URL]
  60. Zhen (Sean) Qian, Michael Zhang, (2011), “The economics of parking provision for the morning commute”, Transportation Research Part A, Vol.45(9), pp. 861-879 (also presented in the 19th International Symposium on Transportation and Traffic Theory, a prestigious peer-viewed series since 1959) [URL]
  61. Zhen (Sean) Qian, Michael Zhang, (2011) “Modeling multimodal morning commute in a one-to-one corridor network”, Transportation Research Part C, Vol. 19(2), pp254-269  [URL]
  62. Zhen (Sean) Qian, Michael Zhang, (2011) “Computing individual path marginal cost in networks with queue spillbacks”, Transportation Research Record, Vol.2263, pp. 9-18 [URL]
  63.  Feng Xiao, Zhen (Sean) Qian, Michael Zhang, (2010) “The morning commute problem with coarse toll and non-identical commuters”, Networks and Spatial Economics,Vol.11, pp.343-369 [URL]
  64. Michael Zhang, Yu Nie, Zhen Qian, (2008) “Estimating time-dependent freeway O-D demands with different data coverage: a sensitivity analysis”, Transportation Research Record, Vol. 2047, pp 91-99 [URL]
  65. Qian Zhen, Lu Huapu, (2005) “An assignment method in transit network and its practicality research”, Journal of Tsinghua University Science and Technology, Vol.45,No.9 (in Chinese)
  66. Qian Zhen, Lu Huapu,Xu Wei, (2005) “Research on the framework of GIS-based transit planning software”, Computer and Communications, vol.23(1), pp.19-22 (in Chinese)
  67. Lu Huapu, Qian Zhen, (2005) “Primary research of urban comprehensive traffic planning method based on TOD mode”, Urban Transport, pp.24-27 (in Chinese)
  68. Huang Shan, Lu Huapu, Qian Zhen, (2005) “Data management modes of intercity traffic information platform software”, Computer and Communications, vol.27(1), pp.1-4 (in Chinese)

Selected Peer-reviewed Conference Proceedings

Almost all the journal publications were also peer-viewed and/or presented in Transportation Research Board Annual Meetings and other relevant IEEE/ASCE/INFORMS conferences. Here are some additional conference papers.

  1. Xuan Li, Pine Liu, Sean Qian, (2017) Towards An Occupancy-enhanced Building HVAC Control Strategy Using Wi-Fi Probe Request Information, Proceedings of the 2017 International Workshop on Computing in Civil Engineering. [URL]
  2. Konstantinos Pelechrinis, Beibei Li, Sean Qian, (2016) Bike Sharing and Car Trips in the City: The Case of Healthy Ride Pittsburgh, proceedings of Workshop on Information Technology and Systems (WITS) 2016, [URL]
  3. Po-ta Chen, Feng Chen, Sean Qian. (2014) "Non-recurrent Traffic Monitoring Based on Social Media with Hinge-loss Markov Random Fields", IEEE International Conference in Data Mining. [URL]
  4. Zhen (Sean) Qian, Ram Rajagopal. (2013) "Data-driven active parking management", Proceedings of Computing in Civil Engineering: pp. 395-402. [URL]
  5. Zhen Qian, Lu Huapu, Liu Chong. (2005) "Research on urban transit planning and management system based on GIS". International IEEE Conference on Intelligent Transportation Systems. [URL]
  6. Ruimin Li, Huapu Lu, Zhen Qian, Qixin Shi. (2005) Research in the integrated transportation information platform based on XML. International IEEE Conference on Intelligent Transportation Systems. [URL]

Selected Peer-reviewed Technical Reports

  1. Wei Ma and Sean Qian, (2016) Dynamic network analysis, traffic prediction and optimal dynamic messages for the Philadelphia region. Pennsylvania Department of Transportation technical report  [URL]
  2. Yiming Gu and Sean Qian, (2016) Real-time Incident Detection Using Social Media Data (Twitter), Pennsylvania Department of Transportation technical report [URL]
  3. Wei Ma and Sean Qian, (2015) Traffic impact of the Greenfield Bridge closure. The Public Works of Pittsburgh technical report 
  4. Sean Qian, (2014) Regional Traveler Information System for Power of 32 Region. Benedum Foundation technical report
  5. Michael Zhang, Zhen Qian (2011), Integrated Work Zone Traffic Management, Phase I: Functional Enhancement, Phase II: GUI Enhancement, Model Validation and Training Workshop, California Department of Transportation technical report 
  6. Zhen Qian, Michael Zhang (2011), Users' Manual and Tutorial of Integrated Work Zone Analysis Software, California Department of Transportation technical report 
  7. Michael Zhang, Zhen Qian , Robert Lim, (2011), Evaluation of the alternative work zone plans for the I-5 closure in Downtown Sacramento, California Department of Transportation (Caltrans) technical report
  8. Michael Zhang, Zhen Qian, Yi-ru Chen, Rachel Carpenter, Robert Lim, (2010), Evaluation of the I-5 Closure in Downtown Sacramento, California Department of Transportation technical report
  9. Michael Zhang, Shikai Tang, Zhen Qian, (2010), Visual PFE Software Enhancement for Planning Applications in Small Sized Community (UC Davis), California Department of Transportation technical report
  10. Michael Zhang, Yu Nie, Zhen Qian, (2008), The Variational Inequality Approach for Dynamic OD Estimation for Freeways, California Department of Transportation technical report