Abstracts and papers are available upon request. (Contact Dr. Lei Zhang)

Publications in refereed journals
11. Zhang, L., Developing a positive approach to travel demand forecasting: Theory and model. Transportation and Traffic
Theory (Accepted for Publication).
10. Zhang, L., and Levinson, D., Economics of network ownership. International Journal of Sustainable Transportation (Accepted for Publication).
9. Zhang, L., and Levinson, D., Agent-based modeling of price competition, capacity choice, and product differentiation in congested networks. Journal of Transport Economics and Policy (Invited paper in a special issue on road pricing)
8. Zhang, L. (2006). The traffic diversion effect of ramp metering. Transportation Research Record: Journal of the Transportation Research Board (In Press).
7. Zhang, L., & Levinson, D. (2006) Ramp metering and freeway bottleneck capacity. Transportation Research Part A: Policy and Practice (Accepted for publication).
6. Zhang, L., & Levinson, D. (2005). Road pricing with autonomous links. Journal of the Transportation Research Board 1932: 147-155.
5. Levinson, D., & Zhang, L. (2006). Ramp meters on trial: Evidence from the Twin Cities metering holidays. Transportation Research Part A: Policy and Practice 40 (10): 810-828.
4. Zhang, L., & Levinson, D. (2005) Balancing efficiency and equity of ramp meters. ASCE Journal of Transportation Engineering 131 (6): 477-481.
3. Zhang, L., & Levinson, D. (2004). An agent-based approach to travel demand forecasting: An exploratory analysis. Journal of the Transportation Research Board 1898: 28-36.
2. Zhang, L., & Levinson, D. (2004). Some properties of flows at freeway bottlenecks. Journal of the Transportation Research Board 1883: 122-131.
1. Zhang, L., & Levinson, D. (2004). Optimal freeway ramp control without origin-destination Information. Transportation Research Part B: Methodological 38 (10): 869-887.

Book chapters
3. Levinson, D., & Zhang, L. (2002). Travel time variability after a shock, In Iida, Y. & M.G.H. Bell (Eds.), The network reliability of transport, Elsevier Science.
2. Zhang, L., & Levinson, D. (forthcoming) The economics of transportation network growth. In Coto, P., & I. Vicente (Eds.), Essays on Transportation Economics. Springer Science.
1. Levinson, D., & Zhang, L. (2004). Evaluating effectiveness of ramp meters. In Gillen, D. & D. Levinson (Eds.), Assessing the benefits and costs of ITS: Making the business case for ITS
investments. Kluwer Academic Publishers.

Under review in refereed journals
9. Zhang, L., Welfare and financial impact of unleashing private-sector investment in transportation systems. Transportation Research Part B: Methodology.
8. Zhang, L. The behavioral foundation of traffic assignment. ASCE Journal of Transportation Engineering.
7. Zhang, L., and Levinson, D., Pricing, investment, and network equilibrium. Network and Spatial Economics.
6. Zhang, L., Xie, F., and Levinson, D., Variation of the subjective value of travel time under different driving conditions. Transport Policy.
5. Zhang, L. and Levinson, D., Does traffic management strategies exacerbate urban sprawl? Transport Geography.
4. Zhang, L., and Levinson, D., Investing for reliability and security in transportation networks. ASCE Journal of Infrastructure Systems.
3. Zhang, L., A Behavioral User Equilibrium principle for traffic assignment: Theory and model. Transportation Science.
2. Zhang, L., and Levinson, D., Determinants of route choice and the value of traveler information. Transportation.
1. Zhang, L., and Levinson, D., A model of the rise and fall of roads. Journal of Regional Science.

Conference Papers and Presentations
29. Zhang, L. (2006). The co-evolution of land use and transportation network. Accepted for presentation at the 11th World Conference on Transportation Research, Berkeley, CA.
28. Zhang, L. (2006). Distance-based road user charge: The case of Oregon. Accepted for presentation at the 11th World Conference on Transportation Research, Berkeley, CA.
27. Zhang, L. (2006). Agent-based modeling of network demand, pricing, and investment dynamics. Presentated at the 2006 INFORMS annual meeting, Nov. 5~8, Pittsburgh, PA.
26. Zhang, L. (2006). Road pricing and regulation on a large mixed-ownership network. Presentated at the 2006 INFORMS annual meeting, Nov. 5~8, Pittsburgh, PA.
25. Zhang, L. (2006). A behavioral user equilibrium principle for traffic assignment: Theory and model. Presentated at the 2006 INFORMS annual meeting, Nov. 5~8, Pittsburgh, PA.
24. Zhang, L. and Levinson, D. (2006). The Economics of Road Ownership. Presented at the First International Symposium on Funding Transportation Infrastructure. Aug. 2~3, Banff, Canada.
23. Zhang, L. (2006). An agent-based model of route choice and spatial learning. Presented at the 85th Transportation Research Board Annual Meeting, Jan. 22~26, Washington, DC.
22. Zhang, L., and Levinson, D. (2006). Determinants of route choice and the value of traveler information. Presented at the 85th Transportation Research Board Annual Meeting, Jan. 22~26, Washington, DC.
21. Zhang, L., and Levinson, D. (2006). The Economics of Transportation Network Growth. Presented at the 85th Transportation Research Board Annual Meeting, Jan. 22~26, Washington, DC.
20. Zhang, L. (2005). Transportation network evolution under different ownership structures. Presented at the 52nd North America Regional Science Association Annual Meeting, Nov. 10~12, Las Vegas, NV.
19. Zhang, L., and Levinson, D. (2005). Pricing, investment, and network equilibrium. Presented at the 84th Transportation Research Board Annual Meeting, Jan 9-13, Washington, DC.
18. Zhang, L., and Levinson, D. (2005). Investing for reliability and security in transportation networks. Presented at the 84th Transportation Research Board Annual Meeting, Jan 9-13, Washington, DC.
17. Zhang, L., Xie, F., and Levinson, D. (2005). Variation of the subjective value of travel time under different driving conditions. Presented at the 84th Transportation Research Board Annual Meeting, Jan 9-13, Washington, DC.
16. Zhang, L., and Levinson, D. (2005). Road pricing with autonomous links. Presented at the 84th Transportation Research Board Annual Meeting, Jan 9-13, Washington, DC.
15. Zhang, L., and Levinson, D. (2004). Road pricing under centralized and decentralized ownership structures. Presented at the 51st North America Regional Science Council Annual Meeting, Nov. 11~13, Seattle, WA.
14. Zhang, L., and Levinson, D. (2004). Investment policy and transportation network and reliability. Presented at the 2nd International Symposium on Transportation Network, Reliability, August 20-24, Christchurch and Queenstown, New Zealand.
13. Zhang, L., and Levinson, D. (2004). An agent-based approach to travel demand forecasting. Presented at the 83rd Transportation Research Board Meeting, Jan 9-13, Washington, DC.
12. Zhang, L., and Levinson, D. (2004). Some properties of flows at freeway bottlenecks. Presented at the 83rd Transportation Research Board Annual Meeting, Jan 11-15, Washington, DC.
11. Zhang, L., and Levinson, D. (2004). Ramp metering and freeway bottleneck capacity. Presented at the 83rd Transportation Research Board Annual Meeting, Jan 11-15, Washington, DC.
10. Zhang, L., and Levinson, D. (2004). Search and learning in travel decision-making. Presented at the 10th World Conference on Transport Research, July 4-8, Istanbul, Turkey.
9. Zhang, L. (2004). An agent-based travel demand model. Presented at the 49th Western Regional Science Association Annual Meeting, Feb 25-28, Maui, HI.
8. Zhang, L., & Levinson, D. (2003). Freeway optimal ramp control without OD information. Presented at the 82nd Transportation Research Board Meeting, Washington, DC.
7. Zhang, L., and Levinson, D. (2003). A model of the rise and fall of roads. Presented at the 50th North America Regional Science Council Annual Meeting, Philadelphia, Nov 20-22.
6. Zhang, L., and Levinson, D. (2003). Balancing efficiency and equity of ramp meters. Presented at the 82nd Transportation Research Board Annual Meeting, Jan 12-16, Washington, DC.
5. Zhang, L. (2003). Prediction of freeway breakdown using Artificial Neural Network. Presented at the 14th Intelligent Transportation System America Annual Meeting, Apr 26-29, San Antonio.
4. Levinson, D., Zhang, L., Das, S., and Sheik, A. (2002). Ramp meters on trial. Presented at the 81st Transportation Research Board Annual Meeting, Jan 13-17, Washington, DC.
3. Levinson, D., and Zhang, L. (2002). Travel time variability after a shock. Presented at the 1st International Symposium on Transportation Network Reliability, July, Kyoto, Japan.
2. Zhang, L., and Levinson, D. (2002). Demand response to ramp metering. In Proceedings of the 3rdInternational Conference on Transportation and Traffic Studies. July 20-22, Guilin, China.
1. Zhang, L. and Levinson, D. (2002). Does traffic management strategies exacerbate urban sprawl? Presented at the 13th Intelligent Transportation System America Annual Meeting, May 19-22, Minneapolis, MN.

Conference Papers Submitted
5. Zhang, L., Developing a positive approach to travel demand analysis. The 17th
International Symposium on Transportation and Traffic Theory, July 23~25, 2007
London, UK (second review).
4. Zhang, L., Behavioral User Equilibrium: A model of route search and route choice with
imperfect information and adaptive spatial learning. The 11th World Conference on Transportation Research, June 24~28, 2007, Berkeley, USA.
3. Zhang, L. and Levinson, D., Economics of road ownership. The 86th Transportation Research
Board Annual Meeting, Jan. 21~25, 2007, Washington, DC.
2. Zhang, L., The traffic diversion effect of ramp metering. The 86th Transportation Research
Board Annual Meeting, Jan. 21~25, 2007, Washington, DC.
1. Zhang, L., The behavioral foundation of traffic assignment. The 86th Transportation Research
Board Annual Meeting, Jan. 21~25, 2007, Washington, DC.

Invited Talks and Seminars
3. Zhang, L. (2006). The future of advanced travel demand modeling: Positive theory, behavioral model, and process data. Center for Transportation Studies, Portland State University.
2. Zhang, L. (2006). The why and how of freeway traffic control. Department of Mechanical Engineering, Oregon State University.
1. Zhang, L., and Levinson, D. (2005). Investing for Network Reliability and Robustness. Department of Mechanical Engineering, Advanced Transportation Seminar Series, University of Minnesota.

Technical reports
3. Harder, K.A., Bloomfield, J.R., Levinson, D., & Zhang, L. (2005). Route preferences and the value of travel-time information for motorists. Minnesota Department of Transportation.
2. Levinson, D. & Zhang, L. (2004). Analysis of road growth, pricing, and investment. Prepared for the Humphrey Institute Sustainable Technologies Applied Research TEA-21 Project.
1. Levinson, D., & Zhang, L. (2002) Final report: Measuring efficiency and equity of ramp meters, Prepared for Minnesota Department of Transportation.