Faculty Directory

Schonfeld, Paul M.

Schonfeld, Paul M.

Civil and Environmental Engineering
3134 Jeong H. Kim Engineering Building


  • Ph.D., University of California, Berkeley, 1978
  • M.S., Massachusetts Institute of Technology, 1974
  • B.S., Massachusetts Institute of Technology, 1974



  • Transportation Engineering
  • Urban Public Transportation Systems
  • Freight Logistics
  • Road Location and Design
  • Air Transportation 
  • Inland Waterways
  • Maintenance Planning an dScheduling 

1.        Kim, M. and Schonfeld, P. “Conventional, Flexible and Variable-type Bus Services,” J. of Transp. Engineering, ASCE, 138-3, March 2012, pp. 263-273.

2.        Kang, M., Jha, M. and Schonfeld, P. “Applicability of Highway Alignment Optimization Models,” Transp. Research Part C: Emerging Technologies, 21-1C, Apr. 2012, pp. 257-286.

3.        Wang, S. and Schonfeld, P. “Simulation-based Scheduling of Mutually Exclusive Projects with Precedence and Regional Budget Constraints,” Transp. Res. Record 2273, 2012, pp. 1-9.

4.        Lai, X. and Schonfeld, P. “Optimization of Rail Transit Alignments Considering Vehicle Dynamics,” Transp. Res. Record 2275, 2012, pp. 77-87.

5.        Kim, M., Schonfeld, P. and Kim, E. “Comparison of Vertical Alignments for Rail Transit,” J. of Transp. Engineering, 139-2, ASCE, Feb. 2013, pp. 230-238.

6.        Markovic, N. and Schonfeld, P. “Stochastic Scheduling for a Single-Terminal Transfer System with Poisson Arrivals,” Strojniski Vestnik (Slovenian J. of Mechanical Eng.), 59-9, Sept. 2013, pp. 564-572.

7.        Kim, M. and Schonfeld, P. “Integrating Bus Services with Mixed Fleets,” Transp. Research Part B: Methodological, 55B, Sept. 2013, pp. 227-244.

8.        Kim, M., Schonfeld, P. and Kim, E. “Simulation–based Rail Transit Optimization Model,” Transp. Res. Record 2374, Dec. 2013, pp. 143-153.

9.        Juster, R. and Schonfeld, P. “Personal Rapid Transit as Urban Transportation,” Transp. Res. Record 2350, Dec. 2013, pp. 128-135.

10.     Markovic, B., Milinkovic, S., Schonfeld, P. and Drobnjak, Z. “Planning Dial-a-Ride Services: Statistical and Metamodeling Approach,” Transp. Res. Record 2352, Dec. 2013, pp. 120-127.

11.     Yang, N., Kang, M., Schonfeld, P. and Jha, M. “Multi-objective Optimization of Highway Alignments Incorporating Preference Information,” Transportation Research Part C: Emerging Technologies, 40C-12, March 2014, pp. 36-48.

12.     Markovic, N., Drobnjak, Z. and Schonfeld, P. “Dispatching Trucks for Drayage Operations,” Transportation Research Part E: Logistics and Transp. Review, 70E-1, Oct. 2014, pp. 99-111.

13.     Kim, M. and Schonfeld, P.  “Integration of Conventional and Flexible Bus Services with Timed Transfers,” Transp. Research Part B: Methodological, 68B-2, Oct. 2014, pp. 76-97.

14.     Feng, L., Miller-Hooks, E., Schonfeld, P. and Mohebbi, M. “Optimizing Ridesharing Services for Airport Access,” Transp. Res. Record 2467, Dec. 2014, pp. 157-176.

15.     Markovic, N., Ryzhov, I. and Schonfeld, P. “Evasive Flow Capture: Optimal Location of Weigh-in-Motion Systems, Tollbooths, and Security Checkpoints,” Networks, 65-1, Jan. 2015, pp. 22-42. (Winner of the Glover-Klingman Prize for the best paper published in Networks in 2015)

16.     Li, Z. and Schonfeld, P. “Hybrid Simulated Annealing and Genetic Algorithm for Optimizing Arterial Signal Timings under Oversaturated Traffic Conditions,” J. of Advanced Transp., 49-1, Jan. 2015, pp. 153-170.

17.     Yang, N., Wang, S. and Schonfeld, P. “Simulation-Based Optimization of Waterway Projects using a Parallel Genetic Algorithm,” International J. of Operations Research and Information Systems, 6-1, Jan.-March 2015, pp. 49-63.

18.     Markovic, N., Nair, R., Schonfeld, P., Miller-Hooks, E. and Mohebbi, M. “Optimizing Dial-a-Ride Services in Maryland: Benefits of Computerized Routing and Scheduling,” Transp. Res. Part C: Emerging Technologies, vol. 55, Jan. 2015, pp. 156-165.

19.     Markovic, N., Milinkovic, S., Tikhonov, K.S. and Schonfeld, P. “Analyzing Passenger Train Arrival Delays with Support Vector Regression,” Transp. Res. Part C: Emerging Technologies, vol. 56, July 2015, pp. 251-262.

20.     Vodopivec, N., Tobias, D., Miller-Hooks, E., Schonfeld, P. and Mohebbi, M. “Taxis as a Recourse Option for Ridesharing Services,” Transp. Res. Record 2536, Sept. 2015, pp 86-97.

21.     Xin, W., Li, Q., Yuan, J. and Schonfeld, P. “Metro Passengers’ Behaviors and their Relation to Metro Incident Involvement,” Accident Analysis & Prevention, v82, Sep. 2015, pp 90-100.

22.     Sun, Y. and Schonfeld, P. “Stochastic Capacity Expansion Models for Airport Facilities,” Transp. Res. Part B, v80, Oct. 2015, pp1-18.

23.     Kim, M. and Schonfeld, P. “Maximizing Net Benefits for Conventional and Flexible Bus Services,” Transp. Research Part A: Policy and Practice, v80, Oct. 2015, pp 116-133.

24.     Sun, Y. and Schonfeld, P. “Optimization Models for Public Transportation Operations under Subsidization and Regulation,” Transp. Res. Record 2530, Dec. 2015, pp 44-54.

25.     Kastrouni, E., Shayanfar, E., Schonfeld, P., Mahapatra, S. and Zhang, L. “Statewide Assessment of the Broader Economic Benefits from Transportation Investment: A Practical Approach Integrating Travel Demand Models and SHRP2 C11 Tools with Applications in Maryland,” Transp. Res. Record 2531, 2015, pp 17-25.

26.     Cheng, W. and Schonfeld, P. “A Method for Optimizing the Phased Development of Rail Transit Lines,” Urban Rail Transit, 1-4, Dec. 2015, pp 227-237.

27.     Sun, Y. and Schonfeld, P. “Schedule-based Route Choice Estimation for Rail Transit Passengers using Automatic Fare Collection Data,” J. of Transp. Engineering, ASCE, 142-1, Jan. 2016, 04015037.  DOI:   10.1061/(ASCE)TE.1943-5436.0000812.

28.     Chen, C.C. and Schonfeld, P. “A Dispatching Decision Support System for Countering Delay Propagation in Intermodal Logistics Networks,” Transp. Planning and Technology, 39-3, March 2016, pp 254-268.

29.     Lai, X. and Schonfeld, P. “Concurrent Optimization of Rail Transit Alignment and Stations,” Urban Rail Transit, 2-1, March 2016, pp 1-15.

30.     Chen, L., Schonfeld, P. and Miller-Hooks, E. “Welfare Maximization for Bus Transit Systems with Timed Transfers and Financial Constraints,” J. of Advanced Transp. 50-4, June 2016, pp 421-433.

31.     Shayanfar, E., Abianeh, A.S., Schonfeld, P. and Zhang, L. “Prioritizing Interrelated Road Projects Using Metaheuristics,” J. of Infrastructure Systems, 22-2, ASCE, June 2016, 04016004.  DOI: 10.1061/(ASCE)IS.1943-555X.0000293.

32.     Markovic, N., Kim, M. and Schonfeld, P. “Statistical and Machine Learning Approach for Planning Dial-A-Ride Services,” Transp. Res. Part A: Policy and Practice, v89, July 2016, pp 41-55.

33.     Hao, P. Wei, L., Schonfeld, P., Zhang, H. and Zheng, X. “Methodology for Optimizing Constrained 3-dimensional Railway Alignments in Mountainous Terrain,” Transp. Research Part C: Emerging Technologies, v68, July 2016, pp 549-565.

34.     Sun, Y. and Schonfeld, P. “Holding Decisions for Correlated Vehicle Arrivals at Intermodal Freight Transfer Terminals,” Transp. Research Part B: Methodological, v90, Aug. 2016, pp 218-240.

35.     Sun, Y., Schonfeld, P., Lu, Y., and Zhou, M. “Redesigning Rail Transit Short Turn Operations for Congestion Mitigation: A Case Study of Line 2 of Shanghai Metro,” Transp. Res. Record 2540, 2016, pp 46-55.

36.     Sun, Y. Guo, Q., Schonfeld, P. and Li, Z. “Implications of the Cost of Public Funds in Public Transit Subsidization and Regulation,” Transp. Research Part A: Policy and Practice, v91, Sep. 2016, pp 236-250.

37.     Chen, C.C., Tsai, Y.H. and Schonfeld, P. “Schedule Coordination, Delay Propagation, and Disruptions Resilience in Intermodal Logistic Networks,” Transp. Res. Record 2548-2, 2016, pp 16-23.

38.     Markovic, N., Ryzhov, I. and Schonfeld, P. “Evasive Flow Capture: A Multi-period Stochastic Facility Location Problem with Independent Demand,” European J. of Operations Research, 257-2, March 2017, pp 687-703.    

39.     Chen, C.C. and Schonfeld, P. “A Hybrid Heuristic Technique for Optimal Coordination in Intermodal Logistics Scheduling,” International J. of Shipping and Transport Logistics, 9-4, 2017, pp 475-499.

40.     Sun, Y., Fan, W. and Schonfeld, P. “Static Parking Choice Model Considering Parking Duration,” Transp. Res. Record 2543, 2016, pp 134-142.

41.     Sun, Y. Shi, J. and Schonfeld, P. “Identifying Passenger Flow Characteristics and Evaluating Travel Time Reliability by Visualizing AFC Data: A Case Study of Shanghai Metro,” Public Transport, v8, Aug. 2016, pp 341-363.

42.     Xin, W., Schonfeld, P., and Li, Q. “What Factors Determine Metro Passengers’ Risky Riding Behavior? An Approach Based on an Extended Theory of Planned Behavior,” Transp. Res. Part F: Traffic Psychology and Behaviour, Part 1 v42, Oct. 2016, pp 125-139.

43.     Sun, Y. and Schonfeld, P. “Capacity Investment Model for Airport Facilities under Demand Uncertainty,” J. of Advanced Transp., 50-8, Dec. 2016, pp 1896-1911.

44.     Sun, Y., Guo, Q., Schonfeld, P. and Li, Z. “Evolution of Public Transportation Modes in a Commuter Corridor,” Transp. Research Part C: Emerging Technologies, v75, Feb. 2017, pp 84-102.

45.     Sun, Y. and Schonfeld, P. “Coordinated Airport Facility Development under Uncertainty,” Transp. Res. Record 2603, 2017, pp 78-88.

46.     Li, W., Pu, H., Schonfeld, P., Yang, J., Zhang, H., Wang, L. and Xiong, J. “Mountain Railway Alignment Optimization with Bidirectional Distance Transform and Genetic Algorithm”, Computer-Aided Civil and Infrastructure Engineering, v. 32, 2017, pp 691-709.

47.     Shi, J., Sun, Y., Schonfeld, P. and Qi, J. “Joint Optimization of Tram Timetables and Signal Timing Adjustments at Intersections,“  Transp. Research Part C: Emerging Technologies, v83, Oct. 2017, pp 104-119.

48.     Shayanfar, E. and Schonfeld, P. “Selecting and Scheduling Interrelated Projects: Application in Urban Road Network Investment,” International J. of Logistics Systems and Management, 29-4, 2018, pp 436-454.

49.     Guo, Q., Chow, J. Y. J. and Schonfeld, P. “Stochastic Dynamic Switching in Fixed and Flexible Transit Services as Market Entry-exit Real Options,“ accepted for Transp. Research Part C: Emerging Technologies, Aug. 2017.

50.     Jovanovic, U., Shayanfar, E. and Schonfeld, P. “Selecting and Scheduling Link and Intersection Improvements in Urban Networks,” accepted for the Transportation Research Record, Oct. 2017.

51.     Sun, Y. and Schonfeld, P. “Optimal Extension of Rail Transit Lines,” accepted for International J. of Sustainable Transportation, Jan. 2018.

52.     Huang, H., Li, K. and Schonfeld, P. “Real-time Energy-saving Metro Train Rescheduling with Primary Delay Identification,” accepted for PLOS ONE, Feb. 2018.

53.     Kim, M., Schonfeld, P. and Kim, E. “Switching Service Types for Multi-region Bus Systems,” accepted for Transp. Planning and Technology, March 2018.

UMD Presents New Research at TRB Annual Meeting

Papers and poster sessions addressed topics ranging from crash data analysis to tracking the outcomes of major highway projects.

MTI Announces Seed Grant Awardees

Five new proposals have been selected for seed grants under a program designed to support interdisciplinary research.

Highway Project Database Provides “One-Stop Shop”

A team at UMD’s Maryland Transportation Institute has pulled together key data on major projects nationwide.

CEE Shows Strong Presence at TRB 98th Annual Meeting

Department faculty, staff, and students were highly active at the Transportation Research Board (TRB) Annual Meeting.

MTI and Battelle to Build Database for Public-Private Partnerships

The database will help state and local governments know when and how to best engage in P3s.

Schonfeld Receives ASCE’s James Laurie Prize

The award recognizes significant contributions to the advancement of transportation engineering.

CEE Experts Active at TRB 97th Annual Meeting

Faculty, staff, and students gave more than 50 presentations during the four-day event.

Schonfeld, Ryzhov team up for NSF EAGER grant

The researchers will determine the amount of data that should be purchased for statistically estimating the coefficients of optimization models for specific transportation problems.

UMD Transportation Experts to Evaluate Economic Benefits of Infrastructure Investments

The project could help officials save taxpayer money while maximizing economic benefits of transportation infrastructure projects

UMD Experts Tackle Critical Topics at Transportation Research Board Annual Meeting

Faculty, staff, and student involvment exemplified the theme "Transportation Innovation: Leading the Way in an Era of Rapid Change."

CEE Transportation Researchers Tackle Critical Topics at 95th TRB Annual Meeting

Areas include visualization, resilience, high-speed rail, and green vehicles.

UMD graduate student Mr. Yanshuo Sun wins Louis T. Klauder Scholarship

2014 Louis T. Klauder Scholarship by the American Public Transportation Foundation (APTF)

UMD Team Awarded Grant to Support International Collaboration

New grant supports research between UMD and Politecnico di Torino, Italy in sustainable, safe, and smart infrastructures.

New Center for Integrated Transportation Systems Management

Establishment of the new Center for Integrated Transportation Systems Management (CITSM)