Lei YU, Ph.D., P.E.
Professor and Chairman
Department of Transportation Studies

• Office: Technology Building 125
• Telephone: (713) 313-7282
• Fax: (713) 313-1856
• E-mail: yu_lx@tsu.edu

RESEARCH INTERESTS

• Transportation Security Evaluation and Technologies
• ITS Related Technologies and Applications
• Emissions Testing and Modeling
• Dynamic Traffic Network Modeling and Simulation
• Travel Demand Forecasting and Modeling
• Traffic Controls and Operations

EDUCATION

• Ph.D., Civil Engineering, Queen's University, Canada, 1994
• M.A.Sc., Production and Systems Engineering, Nagoya Institute of Technology, Japan, 1988
• B.A.Sc., Transportation Engineering, Northern Jiaotong University, China, 1984

POSITIONS HELD

• Chair/Interim Chair (9/98 – Present), Professor (9/02 -Present), Tenure (9/99 – Present), Associate Professor (9/96 – 8/02), and Assistant Professor (9/94 – 8/96), Department of Transportation Studies, Texas Southern University, Houston, Texas.
• Yangtze River Scholar in Transportation Planning and Management, Beijing Jiaotong University 12/2000 – Present.

TEACHING ASSIGNMENTS

• Highway Traffic Operations
• Travel Demand Forecasting and Analysis

SELECTED RESEARCH FUNDING

• PI: PEMS-based Approach to Developing and Evaluating Driving Cycles for Air Quality Assessment (SWUTC, $33,500, 2008-2009).
• CO-PI: Driver Understanding of Congestion-Based Pricing Messages (TxDOT 0-6173, $328,641, 2008-2010).
• CO-PI: Characterization of Exhaust Emissions from Heavy Duty Diesel Vehicles in the HGB Area (TxDOT 0-6237, Total Project Budget $424,401, TSU Budget $70,000, 2008-2010).
• CO-PI: National Transportation Security Center of Excellence, (U.S. Congress through Department of Homeland Security, $18,000,000 per year, 2007-2011).  Establish a National Transportation Security Center of Excellence based on the U.S. Congress House Rule XXI, clause 9(a)(4), Section 1205, jointly with other six institutions.
• CO-PI: Development of Left-Turn Operations Guidelines at Signalized Intersections (TxDOT 0-5840, $228,905, 2006-2008). 
• CO-PI: Develop Emissions, Truck Trips and Railcars Estimation Methodology for Major Texas Ports (TxDOT 0-5515, $290,000, 2006-2008). 
• CO-PI: Vehicle Infrastructure Integration (VII) Based Road-Condition Warning System For Highway Collision Prevention (SWUTC 473700-00056, $20,000, 2006-2007).  
• CO-PI: Computer Simulation-Based Algorithm For Optimizing Evacuation Plans In Major Trip Generator (SWUTC, $20,000, 2006-2007).  
• Key-Investigator: Radio Frequency (RF) Sensor Technology Thrust: Subtask 2.3.8.1- Data Compression of Geolocation Signals (AFRL/UTC-Clarkson Aerospace Minority Leaders Program Sensors Technical Thrust, $180,000, 2006-2008).
• PI: Left-Turn Lane Design and Operation (TxDOT 0-5290, $290,000, 2005-2007). 
• CO-PI: ITS Data Compression by Using Advanced Signal Processing Techniques (SWUTC 167651, $55,200, 2004-2005).  
• PI: Analyzing Truck Idling Emission Characteristics under Altered Testing Conditions (SWUTC 167650, $20,000, 2004-2005). 
•  PI: 2003 TxDOT Parking Lot Survey (TxDOT 52-4XXIA009, $99,970, 2003-2004). 
• PI: Collection and Evaluation of On-Road Vehicle Emission Data and Activity Data (HARC H-8B, $99,993, 2003-2004).
• PI: Measurement and Evaluation of On-Road Vehicle Emissions at Signalized Intersections (SWUTC 473700-00049, $35000, 2003-2004).
• PI: How do Changes in Goods Movements Impact Disadvantaged Population  (FHWA DTFH61-02-X-000112, $100,000, 2002-2003).
• PI: Evaluation of Highway Safety Improvement Projects  (FHWA DTFH61-02-X-000106, $37,500, 2002-2003).
•  PI: Probability Generation of Frequency and Severity of Nonrecurring Congestion due to Accidents to Improve Emissions Analysis (TxDOT 0-4073, $87,000, 2002-2003). 
• PI: Evaluation and Combined Use of TRANSYT-7F and CORSIM in Traffic Signal Optimization and Simulation (SWUTC 473700-00045, $57,000, 2001-2003).
• PI: Synthesis Report on Changeable Message Signs that Depict Symbols and Words  (FHWA DTFH61-01-R-000126, $62,500, 2001-2002). 
• PI: Pavement Smoothness Strategies (FHWA DTFH61-01-R-000111, $56,250, 2001-2002).
• PI: Yellow and Red Intervals to Improve Signal Timing Plans for Left-Turn Movement  ( TxDOT 0-4273, $175,000, 2001-2003). 
• PI: Airport-Related Traffic and Mobile Emission Implications  ( TxDOT 0-4317, $145,000, 2001-2003). 
• CO-PI: Using Real-Time Traffic Data for Transportation Planning ( TxDOT 0-4054 $245,000, 2000-2002).
• PI: Forecasting Traffic Characteristics for Air Quality Analyses ( TxDOT 0-4142 $204,753, 2000-2002). 
• PI: Electronic Energy Storage and Future Transportation (NIST 70NANB0H0107, $85,250, 2000-2001). 
• PI: Using ITS Technology to Improve Highway-Rail Crossing Safety (FHWA DTFH61-00-R-00089, $62,500, 2000-2001).
• PI: Transportation Expertise Pool (FHWA DTFH61-00-R-00095, $112,500, 2000-2002).
• PI: A Comparative Study of Travel Demand Forecasting Models using Real-World Networks: EMME/2 vs. QRS II (SWUTC 167901, $40,000, 1999-2000).
• PI: Collection and Evaluation of Modal Traffic Data for Determination of On-Road Vehicle Emission Rates Under Certain Driving Conditions (TxDOT and FHWA, $200,000, 1995-1997).
• PI: Evaluation of Traffic Simulation Models for Supporting ITS Development (SWUTC167602, $50,000, 1998-1999).
• PI: Modeling for Estimating the Vehicle Exhaust Emissions from the Remote Vehicle Emission Data Collection (SWUTC #467600, $99,000, 1996-1998).
• PI: Quantitatively Estimating Air Quality Improvements and Energy Savings of Alternative Traffic Control Strategies (SWUTC #467203, $45,000, 1995-1996).
• PI: Improve the Modeling Logic Of Vehicles’ Progression to Optimize the Coordinated Traffic Signal Timings in ATMS Networks (SWUTC # 472840-00044, $24,000, 1995-1996).
• PI: New Technologies and Methodologies for Evaluating and Analyzing the Implications of Various New Transportation Objectives (SWUTC # 466060, $55,000, 1994-1995).  

SCIENTIFIC JOURNAL PAPERS

• Yu, L., Z. Wang, F. Qiao, and Y. Qi. Vehicle Emission Characteristics-based Approach to the Development and Evaluation of Driving Cycles for Classified Roads. Forthcoming. In Transportation Research Record: Journal of Transportation Research Board series, TRB, National Research Council, 2008.
• Song, G., L. Yu, and X. Zhang. Emission Analysis at a Toll Station in Beijing Using PEMS' Measurements. Forthcoming. In Transportation Research Record: Journal of Transportation Research Board series, TRB, National Research Council, 2008.
• Chen, X., L. Yu, L. Zhu, L. Yu, and G. Guo. Microscopic Simulation Approach to Effectiveness Analysis of Transit Signal Priority for Bus Rapid Transit: Case Study of Beijing. Forthcoming. In Transportation Research Record: Journal of Transportation Research Board series, TRB, National Research Council, 2008.
• Chen, K. and L. Yu. Traffic-Emission Simulation and Case Study for Evaluation of Traffic Control Strategies Authors. Journal of Transportation Systems Engineering and Information Technology, Vol. 7, Issue: 1, pp. 93-99, February 2007.
• Zhao, N., L. Yu., Y. Geng and X. Chen. Support Vector Machine-Based Approach to Data-Layer Multi-Source ITS Data Fusion. Journal of Transportation Systems Engineering and Information Technology, Vol. 7, Issue: 2, pp. 32-38, April 2007.
• Qi, Y., L. Yu and M. Azimi. Determination Of Storage Lengths Of Left-Turn Lanes At Signalized Intersections. In Transportation Research Record: Journal of Transportation Research Board series, No. 2023, TRB, National Research Council, 2007, pp. 102-111.
• Yu, L. and D. Bell. Signal Timing Data Collection. The UMAP Journal ILAP: Tools for Teaching, The Consortium for Mathematics and Its Applications, Inc., Suite 210, 57 Bedford St., Lexington, MA 02420, ISBN 0-912843-72-1, 2006, pp. 77-100.
• Yu, L., X. Li, and W. Zhuo. A Generic Algorithm-Based Calibration of VISSIM Using GPS Data. Advances in Transportation Studies an international Journal Section B 8, 2006, pp. 57-69.
• Yu, L. L. Yu, X. Chen, T. Wan and J. Guo. Calibration of VISSIM for Bus Rapid Transit Systems in Beijing Using GPS Data. Journal of Public Transportation, Vol. 9, No. 3, pp. 239-257, 2006.
• Qiao, F., H. Liu and L. Yu. Incorporating Wavelet Decomposition Technique to Compress TransGuide ITS Data. In Transportation Research Record: Journal of Transportation Research Board series, No. 1968, TRB, National Research Council, 2006, pp. 63-74.
• Chen, X., G. Lin, and L. Yu. Evaluation Analysis on an Integrated Fare Initiative in Beijing. Journal of Public Transportation, Vol. 8, No. 3, 2005, pp. 33-55.
• Yu, L., F. Qiao, and Y. Zhang. Improved Framework and Systematic Calibration for Left-Turn Change Intervals. In Transportation Research Record: Journal of Transportation Research Board series, No. 1925, TRB, National Research Council, 2005, pp. 112-122.
• Qiao, F. and L. Yu. Collection and Evaluation of On-Road Emission and Activity Data in Houston. In Transportation Research Record: Journal of Transportation Research Board series, No. 1941, TRB, National Research Council, 2005, pp. 60-71.
• Yang, F., L. Yu, and G. Song. Application of Small Sampling Approach to Estimating Vehicle Mileage Accumulations for Beijing, China. In Transportation Research Record: Journal of Transportation Research Board series, No. 1880, TRB, National Research Council, 2004, pp. 77-82.
• Yu, L., L. Munghor, P. Yi, and H. Teng. Simulation-based Evaluation of Applications of Electronic Energy Storage Devices in Buses for Reducing Emissions. In Transportation Research Record: Journal of Transportation Research Board series, No. 1887, TRB, National Research Council, 2004, pp. 109-116.
• Yu, L., F. Qiao, Y. Zhang, and Z. Tian. Improved Red-Clearance Intervals Based-on Observed Turning Times for Left-Turn Movement. In Transportation Research Record: Journal of the Transportation Research Board, No. 1862, TRB, National Research Council, Washington, D.C., 2004, pp. 36-43.
• Qiao, F., X. Wang, and L. Yu. Double-Sizes Optimization of Aggregation Level for ITS Data. In Transportation Research Record: Journal of Transportation Research Board series, No. 1879, TRB, National Research Council, 2004, 80-88.
• Yi, P., S. Li, and L. Yu. Feature Extraction to Improve Volume Adjustment Factors for Rural Roads with Wavelet Transform. In Transportation Research Record: Journal of Transportation Research Board series, No. 1879, TRB, National Research Council, 2004, pp. 24-29.
• Yu, L., F. Qiao, L. Xu, X. Chen, Y. Geng, J. Wu, and Z. Yuan. ITS Data Archiving Strategy Based-on Sampling Approach. Journal of Transportation Systems Engineering and Information. Vol. 3, No. 4, pp. 16-26, 2003.
• Qi, Y., H. Teng and L. Yu, Microscale Emission Models Incorporating Acceleration and Deceleration. Journal of Transportation Engineering, ASCE, Vol. 130, No. 3, MAY/JUNE 2004: 348-359.
• Qiao, F., X. Wang and L. Yu. Optimizing Aggregation Level for ITS Data based on Wavelet Decomposition. In Transportation Research Record 1840: Journal of Transportation Research Board series, TRB, National Research Council, 2003, pp. 10-20.
• Yu, L. and K. Ohno. A Theoretical Approach to Optimizing Offsets of Coordinated Traffic Signal Controls. Journal of Transportation Systems Engineering and Information. Vol. 2, No. 4, pp. 29-39, 2002.
• Yu, L. and P. Yue. A Comparative Study of EMME/2 and QRS II for Small Community. In Transportation Research Record 1858: Journal of Transportation Research Board series, TRB, National Research Council, 2003, pp. 103-111.
• Liu, C., L. Yu, Saksit, K. and H. Oey. Determination of Left-Turn Yellow Change and Red Clearance Interval. Journal of Transportation Engineering, Vol. 128, No. 5, 2002: pp. 452-457.
• Yu, L. Calibration of Platoon Dispersion Parameters based on Link Travel Time Statistics. In Transportation Research Record 1727: Journal of Transportation Research Board series, TRB, National Research Council, Washington, D.C., 2000, pp. 89-94.
• Yu, L. and D. Small. Vehicle Emissions. The UMAP Journal ILAP: Tools for Teaching, The Consortium for Mathematics and Its Applications, Inc., Suite 210, 57 Bedford St., Lexington, MA 02420, ISBN 0-912843-75-6, 2004, pp. 111-132.
• Yu, L. and C. Steward. Ramp Metering of Freeways. The UMAP Journal ILAP: Tools for Teaching, The Consortium for Mathematics and Its Applications, Inc., Suite 210, 57 Bedford St., Lexington, MA 02420, 2001, pp. 63-86.
• Yu, L. and D. Bell. Travel Demand Forecasting and Analysis for South Texas. The UMAP Journal ILAP: Tools for Teaching, The Consortium for Mathematics and Its Applications, Inc., Suite 210, 57 Bedford St., Lexington, MA 02420, ISBN 0-912843-72-1, 2001, pp. 125-144.
• Yu, L. Remote Vehicle Exhaust Emission Sensing for Traffic Simulation and Optimization Models. Journal of Transportation Research Part D: Transport and Environment, Vol. 3, 1998, pp. 337-347.
• Yu, L. A Mathematical Programming Based Approach to Macroscopic Traffic Assignment in a Dynamic Network with Queues. Journal of Transportation Research Part A, Vol. 30, January 1996.
   

SCIENTIFIC JOURNAL PAPERS PUBLISHED IN CHINESE

• Hao, Y., L. Yu, C. Shao, and X. Liu. A Comparative Study of PM Emissions for Before- and After- Installation of DFP for Diesel Vehicles. Accepted for Publication in Journal of Automobile Engineering, 2008.6.
• Song, G., L. Yu, F. Mo, and X. Zhang. PEMS-based Examination of Real-World Emissions. Accepted for Publication in Journal of Automobile Engineering, 2007.
• Yu, L., L. Yu, T. Wan, and X. Chen. A Simulation Study of Traffic Signal Optimizations based on an Integrated Factors of Environment and Delays. Journal of Systems Simulation, 2008, 20(11): 3016-3019.
• Song, G., L. Yu, and X. Zhang. Emission Modeling and Analysis at a Toll Station based on PEMS. Journal of Transportation Systems Engineering and Information, 2008 8 (3): 49-57.
• Teng, H., L. Yu, H. Zhao, and Y. Jiang. A Case Study of Mesoscopic Traffic Simulation Using INTEGRATION. Journal of Transportation Standardization, 2008, 1: 148-153.
• Song, G. and L. Yu. Methods and Practices of Environmental Assessment in Urban Transportation Planning. Journal of Safety and Environmental Engineering, 2007, 14(3): 6-10.
• Song, G., L. Yu, F. Mo, and X. Zhang. A Comparative Study of Emissions for Hybrid Vehicles and Gasoline Vehicles. Journal of Automobile Engineering, 2007, 29 (10): 865-869.
• Qiu, H., L. Yu, B. Han., and G. Song. A Comprehensive Approach to the Assessment of Benefits of Emission Control Strategies. Journal of Environmental Protection Science, 2007, 33(4): 91-93.
• Hao, Y., L. Yu, B. Han, and G. Song. A Review of Emission Dispersion Models at Intersections. Journal of Environmental Pollution and Protection, 2007, 30(4): 103-105.
• Chen, K. and L. Yu. Microscopic Traffic-Emission Simulation and Case Study for Evaluation of Traffic Control Strategies. Journal of Transportation Systems Engineering and Information, Forthcoming, 2006.
• Wan, T., L. Yu, L. Yu., and G. Song. Development and Application of Basic Traffic and Emission Database System for Beijing. Journal of Transportation and Computers, 2006, 24(5): 28-30.
• Mo, F., L. Yu., and G. Song. A Review of PEMS Related Research. Journal of Vehicles and Power, 2006, 104(4): 57-62.
• Zhang, X., L. Yu., and G. Song. PEMS-based Characteristics Analysis of Emissions at Intersections. Journal of Safety and Environmental Engineering. Vol. 13, No. 3, pp. 50-54, 2006.
• Guo, J., L. Yu., and M. Liu. Database Design for the Evaluation of Congestion Mitigation of Beijing City. Scientific Information. No. 10, pp. 9-7, 2006.
• Qiu, H., B. Han., L. Yu, and G. Song. A Comparative Study of Real-Time Emissions from Dual-Fuel Vehicles. Journal of Safety and Environmental Engineering. Vol. 6, No. 1, pp. 121-124, 2006.
• Chen, X., L. Yu., Y. Geng, and Y. Gao. A Case Study on the Regional ITS Architecture Development. Journal of Chinese Highways. Vol. 19, No. 1, pp. 84-88, 2006.
• Geng, Y., L. Yu., and W. Qiao. A Review of Real-Time ITS Data Management and Demand Analysis. Journal of Transportation Systems Engineering and Information. Vol. 5(6), pp. 47-53, 2005.
• Liu, Y., B. Han., L. Yu, and G. Song. Analysis of Real-Time Emission Data on Fukang Vehicles. Journal of Safety and Environmental Engineering. Vol. 12, No. 4, 2005.
• Wang, T. and L. Yu. Comparative Study of Real-World Emission Factors with MOBILE 6 for Jieda Vehicles. Journal of Transportation and Environmental Protection. Vol. 26, No. 2, pp. 11-14, 2005.
• Gao, Y., L. Yu, X. Chen, and Q. Chu. Exploratory Application of Experimental Traffic Engineering Methods – Application of Microscopic Simulation Techniques to Support the Design of Traffic Flow Organization. Journal of Transportation Systems Engineering and Information. Vol. 5, No. 4, pp. 46-52, 2005.
• Chen, X., L. Yu, and G. Lin. Impact Analysis of ITS Technologies on Urban Integrated Public Transportation Systems Coordination. Journal of Transportation Systems Engineering and Information. Vol. 3, No. 3, pp. 13-17, 2005.
• Yang, F., L. Yu., and G. Song. Survival Probability-Based Dynamic Vehicle Age Distribution Model. Journal of Chinese Safety Science. Vol. 15, No. 6, 2005.
• Yu, L., F. Qiao, and J. Liu. Vehicle Miles Traveled (VMT) Estimation Model based-on the Sampled Traffic Counts and Link Characteristics. Journal of Transportation Systems Engineering and Information. Vol. 5, No. 1, pp. 38-46, February 2005.
• Yu, L., F. Qiao, and J. Liu. Development of VMT Model for Forecasting Vehicle Emissions. Journal of Transportation and Environment, Vol. 26, No. 1, pp. 7-9, 22, February 2005.
• Geng, Y., L. Yu, and H. Zhao. ITS Data Quality Control Techniques and Applications. Journal of Chinese Safety Science. Vol. 15, No. 1, pp. 82-87, January 2005.
• Geng, Y., and L. Yu. Real-Time ITS Data Management and Demand Analysis. Journal of Transportation Systems Engineering and Information. Vol. 5, No. 5, 2005.
• Wang, W., L. Yu, J. Liu, and G. Song. Comparative Study of Real-Time Emission Factors of Mid-Size Bus with Predictions from MOBILE6. Journal of Transportation and Environment, Vol. 26, Vol. 3, June 2005.
• Wang, W., L. Yu, W. Pei, and F. Yang. Review of Emission Dispersion Models based on Gaussian Line-Source Model. Journal of Transportation and Environment, Vol. 25, No. 5, pp. 7-10, October 2004.
• Liu, J. and L. Yu. The Exploratory Application of Real-Time Vehicle Emission Data Collection in Beijing. Journal of Transportation and Environment, Vol. 25, No. 6, pp. 13-15, December 2004.
• Yang, F., and L. Yu. Adjusting Vehicle Mileage Accumulative Rates in Beijing Making Use of Small Sample Survey. Journal of Northern Jiaotong University, Vol. 28, 2004: 82-85.
• Yu, L., X. Chen, Y. Geng, F. Qiao, X. Wang, M. Liu, Z. Yuan. ITS Data Aggregation Based-on Wavelet Transformation. Journal of Tsinghua University (Sci & Tech). Vol. 44, No. 2, 2004.
• Wu, J., L. Yu, Z. Yuan, Y. Geng, and M. Liu. Applications of Real-Time ITS Data Sampling Techniques and Case Analysis. Journal of Transportation Systems Engineering and Information. Vol. 4, No. 2. May 2004, pp. 31-41.
• Chen X., L. Yu, J. Guo, and Y. Quan. A Comparison and Analysis of ITS Development in U.S, Europe and Japan. Journal of Urban Planning. Vol. 28, No. 7, 2004:75-79.
• Pei, W., L. Yu, F. Yang, W. Wang, and G. Song. Application of On-board Emission Measurement System OEM. Journal of Transportation and Environment. Vol. 25, No. 1, pp. 18-22. February 2004.
• Wang, W., L. Yu, F. Yang, W. Pei, and G. Song. Development of OEM-based Vehicle Driving Cycles. Journal of Transportation and Environment. Vol. 25, No. 2, pp. 14-17. April 2004.
• Pei, W., L. Yu, F. Yang, W. Wang, and G. Song. Development of Vehicle Driving Cycles for Beijing. Journal of Transportation and Environment. Vol. 25 No. 3, pp. 14-17, June 2004.
• Chen, X., L. Yu, J. Guo, and Y. Quan. Recent Development of ITS in U.S. Journal of World Highways. Vol. 23, No. 2, 2003: 9-12.
• Huang, Q., L. Yu, F. Yang, and G. Song. Summary of Vehicle Emission Evaluation Models. Journal of Transportation and Environment. Vol. 24, No. 6, pp. 18-22. December 2003.
• Yuan, Z., M. Liu, and L. Yu. Analysis of Development of ITS Data Management Techniques. Journal of Science and Technology Guidance. No. 1, 2003.
• Gao, Y., L. Yu, Z. Wang, and X. Chen. Application of ITS Systems Architecture in the Design of ITS Projects. Journal of Intelligent Transportation Systems. April 2003, pp. 30-34, Tsinghua University, Beijing, China.
• Yu, L. and X. Chen. Data Management Techniques under ITS Common Information Platform. Journal of Intelligent Transportation Systems, Vol. 13, October 2002, Tsinghua University, China: pp. 42-46.
• Gazis, D.C., Liu, C. and Yu, L. Development and Prospect of ITS and Traveler Information Systems. Journal of Intelligent Transportation Systems, Vol. 2, December 1999, China.
   

PEER-REVIEWED CONFERENCE PROCEEDING PAPERS

• Hao, Y., L. Yu, C. Shao, and X. Liu. A Comparative Study of PM Emissions for Before- and After- Installation of DFP for Diesel Vehicles. Accepted for Publication in Journal of Automobile Engineering, 2008.6.
• Yu, L., X. Liu, and X. Chen. Data Compression for Emitter Location Finding in Sensor Networks. Proceedings of The 5th International Conference on Information Technology: New Generations, Las Vegas, Nevada, April 7-9, 2008, pp. 1210-1215.
• Yu, L., S. Jia, F. Qiao, and Y. Qi. Research On Transportation Related Emissions: Current Status And Future Directions. 87th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2008.
• Yu, L., Z. Wang, F. Qiao, and Y. Qi. Vehicle Emission Characteristics-based Approach to the Development and Evaluation of Driving Cycles for Classified Roads. 87th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2008.
• Qi, Y., L. Yu, and C. Guo. The Impacts Of Signal Phasing Sequence On Left-turn Operation. 87th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2008.
• Song, G., L. Yu, and Z. Wang. A Practical Model for Evaluation of Fuel Efficiency for Road Traffic. 87th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2008.
• Song, G., L. Yu, and X. Zhang. Emission Analysis at a Toll Station in Beijing Using PEMS' Measurements. 87th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2008.
• Qiao, F., X. Liu and L. Yu. Modeling Lane Change Distance For Sign Placement. 87th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2008.
• Chen, X., L. Yu, L. Zhu, L. Yu, and G. Guo. Microscopic Simulation Approach to Effectiveness Analysis of Transit Signal Priority for Bus Rapid Transit: Case Study of Beijing. 87th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2008.
• Qiao, F., X. Liu, and L. Yu. Arrow Exit Sign Placement on Highway Using Fuzzy Table Look-Up Scheme. 12th Online World Conference on Soft Computing in Industrial Application, Oct. 16-26th, 2007.
• Qiao, F., X. Liu, and L. Yu. Using Driving Simulator for Advance Placement of Guide Sign Design for Exits along Highways. Driving Simulation Conference, North America, Iowa, Sept. 12-14th, 2007.
• Qiao, F., H. Wang, X. Liu, and L. Yu. Using Driving Simulator for Logo and Symbol Design at Interchanges for Major Traffic Generator. Driving Simulation Conference, North America, Iowa. Sept. 12-14th, 2007.
• Qiao, F., and L. Yu. Potential Applications of Radio Frequency Identification (RFID) in Transportation Operation and Intelligent Transportation System (ITS). The 4th International Conference on Cybernetics and Information Technologies, Systems and Applications: CITSA 2007, jointly with The 5th International Conference on Computing, Communications and Control Technologies: CCCT 2007, Orlando, Florida, USA, July 12-15, 2007.
• Liu, Y., L. Yu, and X. Chen. Benefit Analysis on Bus Rapid Transit Exclusive Lanes. The Proceedings of the First International Conference of Transportation Engineering (ICTE’2007), Chengdu, China 2007:2518-2523.
• Song, G., and L. Yu. PEMS-Based Comparative Study on On-Road Emissions from a Hybrid Electric Vehicle vs. a Gasoline Vehicle. The Proceedings of the First International Conference of Transportation Engineering (ICTE’2007), Chengdu, China. 2007: 1747-1752.
• Chen, X., L. Yu, L. Yu, and S. Guo. Impact of Exclusive Lanes and Signal Priority on Bus Rapid Transit Effectiveness. The First International Conference of Transportation Engineering (ICTE'2007), Chengdu, China. 2007:364-369.
• Liu, M., L. Yu, J. Guo, S. Guo, J. Guo, and H. Wen .Fuzzy Logic-Based Urban Traffic Congestion Evaluation Models and Applications. The Proceedings of the First International Conference of Transportation Engineering (ICTE’2007), Chengdu, 2007: 1169-1174
• Chen, K., L. Yu, H. Zhao, J. Guo, and H. Wen. Simulation-based Assessment of the Effect of Large-Scale Events on Urban Road Network Reliability. The Proceedings of the First International Conference of Transportation Engineering (ICTE’2007), Chengdu, 2007: 388-393.
• Yang, F., and L. Yu. A Microscopic Emission Model for the Light Duty Vehicles Based on PEMS Data. The First International Conference of Transportation Engineering (ICTE'2007), Chengdu, China, 2007: 2306-2312.
• Yu, L., F. Qiao, and L. Li. Bayesian-based Approach for Updating Characteristics of Crash Data: Frequency, Duration and Lanes Blocked. 86th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2007.
• Chen, X., L. Yu, L. Yu and J.Guo. VISSIM-Based Simulation Approach to Analysis of Synchronization Between Operation and Traffic Controls in Beijing BRT System. 86th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2007.
• Chen, K. and L. Yu. Characteristics Analysis Of Road Network Reliability In Beijing Based-On The Data Logs From Taxis. 86th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2007.
• Qiao, F., L. Yu, and Z. Wang. On-Road Vehicle Emissions in Beijing, China: An Experimental Study Using PEMS. 86th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2007.
• Qiao, F. and L. Yu. Estimating the Impact of Nonrecurring Congestions on Vehicle Emissions. 86th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2007.
• Yu, L., F. Qiao, and V. Soltani. Characteristics of Truck Idling Emissions Under Real-World Conditions. 85th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2006.
• Qiao, F., H. Liu, and L. Yu. Incorporating Wavelet Decomposition Technique to Compress TransGuide ITS Data. 85th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2006.
• Qiao, F., L. Xu, and L. Yu. Neuro-Fuzzy Logic-Based Model for Assessment of Freight Transportation Implications on Communities. 85th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, Jan 2006.
• Yu, L., W. Pei, F. Yang, G. Song, W. Wang, J. Liu, Q. Huang, and T. Wan. Advanced Research in Emission Controls at Beijing Jiaotong University in China. Proceedings of the 2005 ASCE International Conference on Computing in Civil Engineering, Lucio Soibelman, Feniosky Peña-Mora - Editors, Cancun, Mexico, July 12–15, 2005,.
• Yu, L. and G. Song. Strategic Development of Transportation Environment Research. Proceedings of Strategic Development on Construction, Environment, and Civil Engineering, National Natural Science Foundation, Beijing, China, pp. 173-190, 2005.
• Guo, J., M. Sun, L. Yu, X. Chen, and L. Yu. Microscopic Simulation on Operation Organization and Signal Coordination for Nanzhongzhou BRT System. Proceedings of 21st Symposium 2005 Chinese Urban Transportation Planning Committee, Beijing, China, pp. 1-7, December 2005.
• Zhao, H., L. Yu, X. Chen, and Y. Geng. A Case Study of Real-Time ITS Data Quality Control Techniques. Proceedings of 1st Chinese ITS Annual Meeting, Shanghai, China, pp. 123-130, December 2005.
• Chen, X., L. Yu, and L. Yu. A Review of ITS Development Abroad and Enlightenment to Beijing. Proceedings of 1st Chinese ITS Annual Meeting, Shanghai, China, pp. 1056-1065, December 20
• Geng, Y., L. Yu, M. Liu, J. Wu, and H. Zhao. ITS Data Management Techniques and Strategies. Proceedings of the 1st National Ph.D.’s Academic Forum, Beijing, China, pp. 440-447, July 2005.
• Zhao, H., L. Yu, and Y. Geng. A Comparative Analysis of Real-Time Traffic Flow Data Quality Controls. Proceedings of the 1st National Ph.D.’s Academic Forum, Beijing, China, pp. 393-400, July 2005.
• Liu, M., L. Yu, and Y. Geng. Sensitivity Analysis of Wavelet-Based Aggregation on Traffic Flow Data. Proceedings of the 1st National Ph.D.’s Academic Forum, Beijing, China, pp. 101-106, July 2005.
• Geng, Y., L. Yu, and L. Sun. A Signal Processing Technique-based Approach to the ITS Data Compression. Proceedings of the 2005 ASCE International Conference on Computing in Civil Engineering, Cancun, Mexico, July 12-15 2005.
• Yu, L., W. Pei, F. Yang, G. Song, W. Wang, J. Liu, Q. Huang, and T. Wan. Advanced Research in Emission Controls at Beijing Jiaotong University in China. Proceedings of the 2005 ASCE International Conference on Computing in Civil Engineering, Cancun, Mexico, July 12-15 2005.
• Qiao, F., L. Yu, and M. Djimde. Processing On-Road Truck Emission Data for Comparison with the Computer Model MOBILE6.2. Proceedings of the 2005 ASCE International Conference on Computing in Civil Engineering, Cancun, Mexico, July 12-15 2005.
• Yu, L., W. Pei, F. Yang, G. Song, W. Wang, J. Liu, Q. Huang, and T. Wan. Improving Environment during a High Economic Growth: A Comprehensive Research Agenda in Mobile Emission Controls at Beijing Jiaotong University. Proceedings of The Second Expert Meeting on Social Capacity for Environmental Management (SCEM) Capacity Indicators and Development Process Modeling, Hiroshima University, Hiroshima, Japan, January 11, 2005, pp. 243-258.
• Yu, L., F. Qiao, and Y. Zhang. Improved Framework and Systematic Calibration for Left-Turn Change Intervals. 84th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, 2005.
• Yu, L., X. Li, and W. Zhuo. GA-Based Calibration of VISSIM for Intercontinental Airport of Houston (IAH) Network Using GPS Data. 84th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, 2005.
• Yu, L., X. Chen, and J. Guo. ITS Regional Architecture for Beijing. Proceedings of High-Level Symposium on ITS and Transportation Information Management in the 7th Beijing International Science and Technology Exhibition:．Beijing, China, May 2004: 1-8.
• Liu, X., Y. Quan, L. Yu, X. Chen, and H. Wen. Beijing ITS Planning and Development Strategies. Proceedings of High-Level Symposium on ITS and Transportation Information Management in the 7th Beijing International Science and Technology Exhibition. Beijing, China, May 2004: 9-13.
• Qiao, F. and L. Yu. Collection and Evaluation of On-Road Emission and Activity Data in Houston. 84th Transportation Research Board Annual Meeting CD-ROM, Washington, DC, 2005.
• Yu, L., X. Li, and Z. Zhuo. A Genetic Algorithm-Based Approach to the Calibration of VISSIM Using GPS Data. Proceedings of the Eighth International Conference on Applications of Advanced Technologies in Transportation Engineering (AATT2004), Beijing, China, May 26-28, 2004: 406-411.
• Li, X., L. Yu, and V. Garg. Evaluation of the Overall Effectiveness of Highway Safety Improvement Projects. Proceedings of the Eighth International Conference on Applications of Advanced Technologies in Transportation Engineering (AATT2004), Beijing, China, May 26-28, 2004: 120-124.
•  Teng, H., L. Yu, L. Xu, and J. Guan. An Evaluation of Advanced Changeable Message Signs. Proceedings of the Eighth International Conference on Applications of Advanced Technologies in Transportation Engineering (AATT2004), Beijing, China, May 26-28, 2004: 223-227.
• Yang, F., L. Yu, G. Song, W. Wang, and W. Pei. Vehicle Age Distribution Model and Application for Beijing, China. 83rd Transportation Research Board Annual Meeting CD-ROM, Washington, DC, January 2004.
• Yang, F., L. Yu, and G. Song. Application of Small Sampling Approach to Estimating Vehicle Mileage Accumulations for Beijing, China. 83rd Transportation Research Board Annual Meeting CD-ROM, Washington, DC, January 2004.
• Yu, L., L. Munghor, P. Yi, and H. Teng. Simulation-based Evaluation of Applications of Electronic Energy Storage Devices in Buses for Reducing Emissions. 83rd Transportation Research Board Annual Meeting CD-ROM, Washington, DC, January 2004.
• Yu, L., F. Qiao, Y. Zhang, and Z. Tian. Improved Red-Clearance Intervals Based-on Observed Turning Times for Left-Turn Movement. 83rd Transportation Research Board Annual Meeting CD-ROM, Washington, DC, January 2004.
• Qiao, F., X. Wang, and L. Yu. Double-Sizes Optimization of Aggregation Level for ITS Data. 83rd Transportation Research Board Annual Meeting CD-ROM, Washington, DC, January 2004.
• Qiao, F. and L. Yu. An Alternative Approach to VMT Estimation: Combining Traffic Count and Link Attributes. 83rd Transportation Research Board Annual Meeting CD-ROM, Washington, DC, January 2004.
• Yi, P., S. Li, and L. Yu. Feature Extraction to Improve Volume Adjustment Factors for Rural Roads with Wavelet Transform. 83rd Transportation Research Board Annual Meeting CD-ROM, Washington, DC, January 2004.
•  Pei, W., C. Shao and L. Yu, A Dynamic Model for Vehicle Emission in Beijing Streets, Proceedings of the Second International Symposium on Social Capacity Development for Environmental Management and International Cooperation in Developing Countries, Hiroshima University, Japan, Jan 2004: 180-188.
• Pei, W., C. Shao and L. Yu, A Dynamic Model for Vehicle Emission in Beijing Streets, Proceedings of the Second International Symposium on Social Capacity Development for Environmental Management and International Cooperation in Developing Countries, Hiroshima University, Japan, Jan 2004: 180-188.
• Yang, F., L. Yu, G. Song, W. Wang, and W. Pei. Modeling Dynamic Vehicle Age Distribution in Beijing. Proceedings of the 6th IEEE International Conference on Intelligent Transportation Systems. ISBN 0-7803-8126-2. Shanghai, China, October 12-15, 2003.
•  Liu, M., L. Yu, and Z. Yuan. Improved Aggregation Levels of ITS Data via Wavelet Decomposition and Fast Fourier Transform Algorithm. Proceedings of the 6th IEEE International Conference on Intelligent Transportation Systems. ISBN 0-7803-8126-2. Shanghai, China, October 12-15, 2003.
• Chen, X., L. Yu, G. G. Guo, Y. Quan, Y. Geng, and Y. Gao. Development of Beijing Regional Intelligent Transportation Systems Architecture. Proceedings of the 6th IEEE International Conference on Intelligent Transportation Systems. ISBN 0-7803-8126-2. Shanghai, China, October 12-15, 2003.
• Qiao, F., X. Wang and L. Yu. Optimizing Aggregation Level for ITS Data based on Wavelet Decomposition. TRB 2003 Annual Meeting CD-ROM, Washington, DC, January 2003.
• Yu, L. and P. Yue. A Comparative Study of EMME/2 and QRS II for Small Community. TRB 2003 Annual Meeting CD-ROM, Washington, DC, January 2003.
• Qiao, F., G. Li and L. Yu. Adjusting Vehicle Mileage Accumulation Rates based on Small Sample Survey. TRB 2003 Annual Meeting CD-ROM, Washington, DC, January 2003.
• Li, X., L. Yu and W. Wang. Derivation of Emission Factors for Nanjing, China Using MOBILE5. TRB 2003 Annual Meeting CD-ROM, Washington, DC, January 2003.
• Yu, L., F. Qiao, L. Munghor, X. Wang, and A. Changpradith. Survey on Using ITS Technology to Improve Highway-Rail Grade Crossing. TRB 2003 Annual Meeting CD-ROM, Washington, DC, January 2003.
• Qiao, F., L. Yu and X. Wang. Time-Scale Domain Analysis of ITS Data via Transformation. Proceedings of 3rd International Conference on Traffic and Transportation Studies (ICTSS’2002), Guilin, China, July 2002, pp. 1232-1239.
• Yu, L., F. Qiao, L. Munghor, X. Wang, and A. Changpradith. Application of ITS Technology to Improve Highway-Rail Grade Crossing Safety. Proceedings of 3rd International Conference on Traffic and Transportation Studies (ICTTS’2002), Guilin, China, July 2002, pp. 1298-1305.
• Yang, Z., H. Li, X. Jiang, L. Yu, J. Miao, and P. Du. A Study of Railway Transportation Simulation System. Proceedings of 3rd International Conference on Traffic and Transportation Studies (ICTTS’2002), Guilin, China, July 2002, pp. 1385-1392.
• Qiao, F. , L. Yu, G. Li, and X. Wang. Modeling Vehicle Age Distribution for Air Quality Analysis. Proceedings of 3rd International Conference on Traffic and Transportation Studies (ICTTS’2002), Guilin, China, July 2002, pp. 17-24.
• Qiao, F, X. Wang and L. Yu. Determining Aggregation Level for ITS Data Via Wavelet Transformation. Proceedings of the 12th ITS America Annual Meeting (CD-ROM), Long Beach, California, April 29-May 2, 2002.
• Qiao, F., L. Yu, G. Li, and X. Wang. Modeling Vehicle Age Distribution For Air Quality Analysis. 81st Transportation Research Board Annual Meeting CD-ROM, Washington, D.C., January 2002.
• Yu, L., P. Yue, and L. Chiu. Modeling a Small Network for Traffic Impact Study. 81st Transportation Research Board Annual Meeting CD-ROM, Washington, D.C., January 2002.
• Teng H., L. Yu. and Y. Qi. Statistical Microscale Emission Models Incorporating Acceleration and Deceleration 81st Annual Meeting of Transportation Research Board CD-ROM, Washington, D.C., January 2002.
• Ohno, K. and L. Yu. Stochastic Process-Based Approach to Determining the Offset of Coordinated Traffic Signals. 80th Transportation Research Board Annual Meeting CD-ROM, 01-2281, Washington, D.C., January 2001.
• Liu, C, K. Saksit, H. Oey, and L. Yu. Determination of Left-Turn Yellow and Red Intervals. 80th Transportation Research Board Annual Meeting CD-ROM, 01-0591, Washington, D.C., January 2001.
•  Liu, C, and L. Yu. Assessing Transportation Network Quality from Vehicle Emission, Fuel Consumption, and Traffic Congestion Perspectives. 80th Transportation Research Board Annual Meeting CD-ROM, 01-0183, Washington, D.C., January 2001.
• Yu, L. Calibration of Platoon Dispersion Parameters based on Link Travel Time Statistics. 79th Transportation Research Board Annual Meeting CD-ROM, Washington, D.C., January 2000.
• Yu, L. Remote Vehicle Exhaust Emission Sensing for Traffic Simulation and Optimization Models. 78th Transportation Research Board Annual Meeting CD-ROM, Paper # 990081, Washington, D.C., January 1999.
• Yu, L., Lede', N.W. and Godazi, K. Remote Sensing of Vehicle Exhaust Emissions for the On-Road Emission Estimation and Emission Model Evaluation. Proceedings of 1998 ASCE International Conference on Traffic and Transportation Studies (ICTTS’98), Beijing, China, July 1998, pp. 898-907.
• Yu, L., and Van Aerde, M. DYNAMIC: A Queuing Based Dynamic Macroscopic Traffic Assignment/Simulation Model. Proceedings of 1998 ASCE International Conference on Traffic and Transportation Studies (ICTTS’98), Beijing, China, July 1998, pp. 300-309.
• Yu, L. Examination of Tree Building and Weight Selection Strategies for a Discrete Dynamic Traffic Assignment Model. Proceedings of 5th International Conference on Applications of Advanced Technologies in Transportation Engineering, Newport Beach, California, 1998, pp. 207-216.
• Yu, L. and Williams, G.L. Collection and Evaluation of On-Road Vehicle Emission Data Using a Remote Emission Sensor Proceedings of the ASCE Conference on Transportation, Land Use and Air Quality, Portland, Oregon, 1998, pp. 444-453.
• Williams, G.L. and Yu, L. Vehicle Emission Impacts of Alternative Traffic Control Strategies. Proceedings of the ASCE Conference on Transportation, Land Use and Air Quality, Portland, Oregon, 1998, pp. 346-354.
• Yu, L. Air Quality Based Approach for Traffic Management Strategies,” Proceedings of 1997 ASCE Traffic Congestion and Traffic Safety in the 21st Century Conference, Chicago, Illinois, June 1997, pp. 479-485.
• Yu, L. Platoon Dispersion and Calibration under Advanced Traffic Control Strategies. Proceedings of 1997 ASCE Traffic Congestion and Traffic Safety in the 21st Century Conference, Chicago, Illinois, June 1997, pp. 507-513.
• Yu, L., “Remote Vehicle Emission Sensing for Evaluating ATMS Strategies,” Proceedings of Eighth ITS America Annual Meeting (CD-ROM), Washington, D.C., 1997.
• Yu, L. and Van Aerde, M. Dynamic Modeling of Traffic Networks in Route Guidance for System Time Optimal and User Time Equilibrium. Proceedings of the Seventh ITS America Annual Meeting, Houston, Texas, 1996, pp. 198-209.
• Yu, L. A Practical Algorithm for Solving the Dynamic Traffic Assignment Problems for Complex Networks. Proceedings of Annual International Conference on Industrial Engineering Applications and Practice, Houston, Texas, 1996, pp. 488-493.
• Yu ,L. and Burrier, S. Vehicle Emission Sensing and Evaluation Using the Smog Dog in Houston. SPIE: Transportation Sensors and Controls: Collision Avoidance, Traffic Management, and ITS, Volume 2902, Boston, MA, 1996, pp. 219-230.
• Yu, L. and Stewart, J.A. A New Methodology for Routing Vehicles in IVHS with Environmental Objectives. Proceedings of the Sixth ITS America Annual Meeting, Washington, D.C., 1995, pp. 1147-1160.
• Yu, L. and Van Aerde, M. Implementing TRANSYT's Macroscopic Platoon Dispersion in Microscopic Simulation Models. 1995 Transportation Research Board Annual Meeting, Paper # 950803, Washington, D.C., 1995.
• Yu, L. Modeling the Environmental Impacts of the Deployment of the Intelligent Transportation Systems. Proceedings of the 29th International Symposium on Automotive Technology & Automation, Florence, Italy, 1996.
• Van Aerde, M., Hellinga, B., Yu, L. and Rakha, H. Vehicle Probes as real-time ATMS Sources of Dynamic O-D and Link Travel Time Data. Proceedings of the Advanced Traffic Management Conference, St-Petersburg Beach, Florida, 1993, pp. 207-230.
• Yu, L., Van Aerde, M. and Rilett, L. An Overview of the DYNAMIC Traffic Assignment Method. Canadian ITE '93 Annual Conference Compendium, Edmonton, Canada, 1993, pp. 125-144.

PRESENTATIONS

• “Data Compression for Emitter Location Finding in Sensor Networks.” Presented at The 5th International Conference on Information Technology: New Generations, Las Vegas, Nevada, April 7-9, 2008.
• “Research On Transportation Related Emissions: Current Status And Future Directions.” Presented at 87th Transportation Research Board Annual Meeting, Washington, DC, Jan 2008.
• “Vehicle Emission Characteristics-based Approach to the Development and Evaluation of Driving Cycles for Classified Roads.” Presented at 87th Transportation Research Board Annual Meeting, Washington, DC, Jan 2008.
• “The Impacts Of Signal Phasing Sequence On Left-turn Operation.” Presented at 87th Transportation Research Board Annual Meeting, Washington, DC, Jan 2008
• “A Practical Model for Evaluation of Fuel Efficiency for Road Traffic.” Presented at 87th Transportation Research Board Annual Meeting, Washington, DC, Jan 2008.
• “Emission Analysis at a Toll Station in Beijing Using PEMS' Measurements.” Presented at 87th Transportation Research Board Annual Meeting, Washington, DC, Jan 2008.
• “Modeling Lane Change Distance For Sign Placement.” Presented at 87th Transportation Research Board Annual Meeting, Washington, DC, Jan 2008.
• “Microscopic Simulation Approach to Effectiveness Analysis of Transit Signal Priority for Bus Rapid Transit: Case Study of Beijing.” Presented at 87th Transportation Research Board Annual Meeting, Washington, DC, Jan 2008.
• “Arrow Exit Sign Placement on Highway Using Fuzzy Table Look-Up Scheme.” Presented at 12th Online World Conference on Soft Computing in Industrial Application, Oct. 16-26th, 2007.
• “Using Driving Simulator for Advance Placement of Guide Sign Design for Exits along Highways.” Presented at Driving Simulation Conference, North America, Iowa, Sept. 12-14th, 2007.
• “Using Driving Simulator for Logo and Symbol Design at Interchanges for Major Traffic Generator.” Presented at Driving Simulation Conference, North America, Iowa. Sept. 12-14th, 2007.
• “Potential Applications of Radio Frequency Identification (RFID) in Transportation Operation and Intelligent Transportation System (ITS).” Presented at The 4th International Conference on Cybernetics and Information Technologies, Systems and Applications: CITSA 2007, jointly with The 5th International Conference on Computing, Communications and Control Technologies: CCCT 2007, Orlando, Florida, USA, July 12-15, 2007.
• “Benefit Analysis on Bus Rapid Transit Exclusive Lanes.” Presented at the First International Conference of Transportation Engineering (ICTE’2007), Chengdu, China, 2007.
• “PEMS-Based Comparative Study on On-Road Emissions from a Hybrid Electric Vehicle vs. a Gasoline Vehicle.” Presented at the First International Conference of Transportation Engineering (ICTE’2007), Chengdu, China, 2007.
• “Impact of Exclusive Lanes and Signal Priority on Bus Rapid Transit Effectiveness.” Presented at the First International Conference of Transportation Engineering (ICTE’2007), Chengdu, China, 2007.
• “Fuzzy Logic-Based Urban Traffic Congestion Evaluation Models and Applications.” Presented at the First International Conference of Transportation Engineering (ICTE’2007), Chengdu, China, 2007.
• “Simulation-based Assessment of the Effect of Large-Scale Events on Urban Road Network Reliability.” Presented at the First International Conference of Transportation Engineering (ICTE’2007), Chengdu, China, 2007.
• “A Microscopic Emission Model for the Light Duty Vehicles Based on PEMS Data.” Presented at the First International Conference of Transportation Engineering (ICTE’2007), Chengdu, China, 2007.
• “Bayesian-based Approach for Updating Characteristics of Crash Data: Frequency, Duration and Lanes Blocked.” Presentation at 86th Transportation Research Board Annual Meeting, Washington, DC, January 21-25, 2007.
• “VISSIM-Based Simulation Approach to Analysis of Synchronization Between Operation and Traffic Controls in Beijing BRT System.” Presentation at 86th Transportation Research Board Annual Meeting, Washington, DC, January 21-25, 2007.
• “Characteristics Analysis Of Road Network Reliability In Beijing Based-On The Data Logs From Taxis.” Presentation at 86th Transportation Research Board Annual Meeting, Washington, DC, January 21-25, 2007.
• “On-Road Vehicle Emissions in Beijing, China: An Experimental Study Using PEMS.” Presentation at 86th Transportation Research Board Annual Meeting, Washington, DC, January 21-25, 2007.
• “Estimating the Impact of Nonrecurring Congestions on Vehicle Emissions.” Presentation at 86th Transportation Research Board Annual Meeting, Washington, DC, January 21-25, 2007.
• “Characteristics of Truck Idling Emissions Under Real-World Conditions.” Presentation at 85th Transportation Research Board Annual Meeting, Washington, DC, January 22-26, 2006.
• “Incorporating Wavelet Decomposition Technique to Compress TransGuide ITS Data.” Presentation at 85th Transportation Research Board Annual Meeting, Washington, DC, January 22-26, 2006.
• “Neuro-Fuzzy Logic-Based Model for Assessment of Freight Transportation Implications on Communities.” Presentation at 85th Transportation Research Board Annual Meeting, Washington, DC, January 22-26, 2006.
• “Wavelet-Based Determination of Aggregation Levels for ITS Data.” Invited speaker at the workshop #118 at 84th Transportation Research Board Annual Meeting, Washington, DC, Jan 9-13, 2005.
• “Improving Environment during a High Economic Growth: A Comprehensive Research Agenda in Mobile Emission Controls at Beijing Jiaotong University.” Presented at 2nd COE Expert Meeting Organized by Hiroshima University, Renmin University, Beijing, China, November 2-3, 2004.
• “Improved Framework and Systematic Calibration for Left-Turn Change Intervals.” Presentation at 84th Transportation Research Board Annual Meeting, Washington, DC, Jan 9-13,2005.
• “GA-Based Calibration of VISSIM for Intercontinental Airport of Houston (IAH) Network Using GPS Data.” Presentation at 84th Transportation Research Board Annual Meeting, Washington, DC, Jan 9-13,2005.
• “Collection and Evaluation of On-Road Emission and Activity Data in Houston.” Presentation at 84th Transportation Research Board Annual Meeting, Washington, DC, Jan 9-13,2005.
• “Development of Regional ITS Architecture for Beijing.” Invited Speaker at Beijing High-Level Symposium on ITS and Transportation Information Management, Beijing, China, May 23-24, 2004.
• “Vehicle Age Distribution Model and Application for Beijing, China.” Presentation at 83rd Transportation Research Board Annual Meeting, Washington, DC, January 2004.
• “Application of Small Sampling Approach to Estimating Vehicle Mileage Accumulations for Beijing, China.” Presentation at 83rd Transportation Research Board Annual Meeting, Washington, DC, January 2004.
• “Simulation-based Evaluation of Applications of Electronic Energy Storage Devices in Buses for Reducing Emissions.” Presentation at 83rd Transportation Research Board Annual Meeting, Washington, DC, January 2004.
• “Improved Red-Clearance Intervals Based-on Observed Turning Times for Left-Turn Movement.” Presentation at 83rd Transportation Research Board Annual Meeting, Washington, DC, January 2004.
• “Double-Sizes Optimization of Aggregation Level for ITS Data.” Presentation at 83rd Transportation Research Board Annual Meeting, Washington, DC, January 2004.
• “An Alternative Approach to VMT Estimation: Combining Traffic Count and Link Attributes.” Presentation at 83rd Transportation Research Board Annual Meeting, Washington, DC, January 2004.
• “Vehicle Age Distribution Model and Application for Beijing, China.” Presented at 83rd Transportation Research Board Annual Meeting CD-ROM, Washington, DC, January 2004.
• “ITS Development in Houston, Texas.” Invited Speaker at Second ITS High-Level Forum, Beijing, China, December 26, 2003.
• “On-Road Vehicle Emission Monitoring Technology and its Applications.” Presentation at the 3rd International Conference of Young Chinese Transportation Professionals, Beijing, China, December 10-12, 2003.
• “Optimizing Aggregation Level for ITS Data based on Wavelet Decomposition.” Presentation at 82nd Transportation Research Board Annual Meeting, Washington, DC, January 2003.
• “Adjusting Vehicle Mileage Accumulation Rates based on Small Sample Survey.” Presentation at 82nd Transportation Research Board Annual Meeting, Washington, DC, January 2003.
• “Derivation of Emission Factors for Nanjing, China Using MOBILE5.” Presentation at 82nd Transportation Research Board Annual Meeting, Washington, DC, January 2003.
• “A Comparative Study of EMME/2 and QRS II for Small Community.” Presentation at 82nd Transportation Research Board Annual Meeting, Washington, DC, January 2003.
• “Survey on Using ITS Technology to Improve Highway-Rail Grade Crossing.” Presentation at 82nd Transportation Research Board Annual Meeting, Washington, DC, January 2003.
• “Data Management Techniques in ITS Common Information Platform.” Presentation at 2nd Beijing ITS International Symposium, Beijing, September 2002.
• “ITS Data Archiving and Aggregation.” Presentation at the 2nd International Conference of Young Chinese Transportation Professionals, Nanjing, China, August 6-7, 2002.
• “Time-Scale Domain Analysis of ITS Data via Transformation.” Presentation at 3rd International Conference on Traffic and Transportation Studies (ICTTS’2002), Guilin, China, July 2002.
• “Application of ITS Technology to Improve Highway-Rail Grade Crossing Safety.” Presentation at 3rd International Conference on Traffic and Transportation Studies (ICTTS’2002), Guilin, China, July 2002.
• “A Study of Railway Transportation Simulation System.” Keynote Speech at 3rd International Conference on Traffic and Transportation Studies (ICTTS’2002), Guilin, China, July 2002.
• “Modeling Vehicle Age Distribution for Air Quality Analysis.” Presentation at 3rd International Conference on Traffic and Transportation Studies (ICTTS’2002), Guilin, China, July 2002.
• “Modeling Vehicle Age Distribution For Air Quality Analysis.” Presentation at 81st Transportation Research Board Annual Meeting, Washington, D.C., January 2002.
• “Modeling a Small Network for Traffic Impact Study.” Presentation at 81st Transportation Research Board Annual Meeting, Washington, D.C., January 2002.
• “Statistical Microscale Emission Models Incorporating Acceleration and Deceleration.” Presentation at 81st Annual Meeting of Transportation Research Board, Washington, D.C., January 2002.
• “Mobile Source Emission Modeling and Control Strategies: Experience and Problems.” Presentation at the 1st International Conference of Young Chinese Transportation Professionals, Shanghai, China, July, 2001.
• “Stochastic Process-Based Approach to Determining the Offset of Coordinated Traffic Signals.” Presentation at 80th Transportation Research Board Annual Meeting, 01-2281, Washington, D.C., January 2001.
• “Determination of Left-Turn Yellow and Red Intervals.” Presentation at 80th Transportation Research Board Annual Meeting, Washington, D.C., January 2001.
• “Assessing Transportation Network Quality from Vehicle Emission, Fuel Consumption, and Traffic Congestion Perspectives.” Presentation at 80th Transportation Research Board Annual Meeting, Washington, D.C., January 2001.
• “Calibration of Platoon Dispersion Parameters based on Link Travel Time Statistics.” Presentation at 79th Transportation Research Board Annual Meeting, Washington, D.C., January 2000.
• “ITS and Environment.” Invited Speaker at Texas Summer Transportation Institute (TSTI) organized by Texas Transportation Institute (TTI) and Sponsored by US Department of Transportation, June 2000 at Houston Session.
• “A Comparative Study of EMME/2 and QRS II for Modeling a Small Urban Networks.” Presentation at The 14th Annual EMME/2 International Users’ Group Conference, Chicago, Illinois, October 20-22, 1999.
• “Highway Traffic Operations with Applications of Intelligent Transportation Systems (ITS) Technologies.” Invited lecturer by the Graduate School of Tsinghua University for its Summer Graduate Teaching Program, Tsinghua University, Beijing, China, August 16-26, 1999.
• “Highway Planning Methods.” Provided training to a group of six planners from Hunan Provincial Department of Transportation, People’s Republic of China sponsored by the World Bank, Houston, Texas, June 30-July 12, 1999.
• “ITS and Environment.” Invited Speaker at Summer Transportation Institute (STI) organized by Texas Transportation Institute (TTI) and Sponsored by US Department of Transportation, July 16, 1999 at Houston Session and July 30, 1999 at Dallas Session.
• “Remote Vehicle Exhaust Emission Sensing for Traffic Simulation and Optimization Models.” Presentation at 78th Transportation Research Board Annual Meeting, Washington, D.C., January 1999.
• “Remote Sensing of Vehicle Exhaust Emissions for the On-Road Emission Estimation and Emission Model Evaluation.” Presentation at 1998 ASCE International Conference on Traffic and Transportation Studies (ICTTS’98), Beijing, China, July 1998.
• “DYNAMIC: A Queuing Based Dynamic Macroscopic Traffic Assignment/Simulation Model.” Presentation at 1998 ASCE International Conference on Traffic and Transportation Studies (ICTTS’98), Beijing, China, July 1998.
• “ITS Development Strategy.” Invited Speaker at ’98 Symposium on Harbin Roadway Development Strategy, Harbin, China, July 25, 1998.
• “American Transportation Systems and its ITS Development.” Invited Speaker at Center for ITS Research and Development of Northern Jiaotong University, Beijing, China, July 29, 1998.
• “Examination of Tree Building and Weight Selection Strategies for a Discrete Dynamic Traffic Assignment Model.” Presentation at 5th International Conference on Applications of Advanced Technologies in Transportation Engineering, Newport Beach, California, 1998.
• “Collection and Evaluation of On-Road Vehicle Emission Data Using a Remote Emission Sensor.” Presentation at the ASCE Conference on Transportation, Land Use and Air Quality, Portland, Oregon, 1998.
• “Vehicle Emission Impacts of Alternative Traffic Control Strategies.” Presentation at the ASCE Conference on Transportation, Land Use and Air Quality, Portland, Oregon, 1998.
• “Air Quality Based Approach for Traffic Management Strategies.” Presentation at 1997 ASCE Traffic Congestion and Traffic Safety in the 21st Century Conference, Chicago, Illinois, June 1997.
• “Platoon Dispersion and Calibration under Advanced Traffic Control Strategies.” Presentation at 1997 ASCE Traffic Congestion and Traffic Safety in the 21st Century Conference, Chicago, Illinois, June 1997.
• “Remote Vehicle Emission Sensing for Evaluating ATMS Strategies.” Presentation at Eighth ITS America Annual Meeting, Washington, D.C., 1997.
• “Advanced Transportation Management Systems.” Distinguished Lecturer for the Chinese Delegations of Transportation Executives and Administrators from the Yunnan Province, Houston, Texas, October 30 - November 3, 1996, March 19-22, 1997, and December 7-9, 1998.
• “A Practical Algorithm for Solving the Dynamic Traffic Assignment Problems for Complex Networks.” Presentation at Annual International Conference on Industrial Engineering Applications and Practice, Houston, Texas, 1996.
• “Vehicle Emission Sensing and Evaluation Using the Smog Dog in Houston.” Presentation at SPIE Conference: Transportation Sensors and Controls: Collision Avoidance, Traffic Management, and ITS, Boston, MA, 1996.
• “A New Methodology for Routing Vehicles in IVHS with Environmental Objectives.” Presentation at the Sixth ITS America Annual Meeting, Washington, D.C., 1995.
  “Implementing TRANSYT's Macroscopic Platoon Dispersion in Microscopic Simulation Models.” Presentation at 1995 Transportation Research Board Annual Meeting, Washington, D.C., 1995.
• “Vehicle Probes as real-time ATMS Sources of Dynamic O-D and Link Travel Time Data.” Presentation at the Advanced Traffic Management Conference, St-Petersburg Beach, Florida, 1993, pp. 207-230.
• “An Overview of the DYNAMIC Traffic Assignment Method.” Presentation at Canadian ITE '93 Annual Conference, Edmonton, Canada, 1993.

TECHNICAL REPORTS PUBLISHED

• Yu, L., S. Jia, and Q. Shi. A Synthesis of Transportation Emissions Research: Current Status and Future Directions. Research Report for the SWUTC-05-473700-00049, Center for Transportation Training and Research (CTTR), Texas Southern University, 2008 (140 Pages).
• Yu, L., Y. Qi, M. Azimi, C. Guo, and L. Guo. Left-Turn Lane Design and Operations. Research Report for the TxDOT 0-5290, Texas Department of Transportation, 2007 (219 Pages).
• Yu, L., F. Qiao, and F. Soltani. Testing and Modeling of Truck Emissions While Idling. Research Report for the SWUTC-05-167650-1, Center for Transportation Training and Research (CTTR), Texas Southern University, 2005 (84 Pages).
• Yu, L., F. Qiao, and Z. Song. Evaluation and Combined Use of TRANSYT-7F and CORSIM in Traffic Signal Optimization and Simulation. Research Report for the SWUTC-05-473700-00045, Center for Transportation Training and Research (CTTR),Texas Southern University, 2005 (115 Pages).
• Yu, L., F. Qiao, and L. Li. Probability Generation of Frequency and Severity of Nonrecurring Congestion due to Accidents to Improve Emission Analysis. Research Report TxDOT 0-4073, Texas Department of Transportation. January 2004.
• Yu, L., X. Li, and W. Zhuo. Airport-Related Traffic and Mobile Implications. Research Report TxDOT 0-4317, Texas Department of Transportation. January 2004.
• Li, X., V. Garg and L. Yu. Evaluation of Highway Safety Improvement Projects. Research Report for the DTFH61-02-X-00106, Federal Highway Administration, 2003.
• Yu, L., F. Qiao, Y. Zhang, Z. Tian, and N. Chaudhary. Yellow and Red Intervals to Improve Signal Timing Plans for Left-Turn Movements. Research Report TxDOT 0-4273, Texas Department of Transportation, January 2004.
• Yu, L., F. Qiao and G. Li. Forecasting Traffic Characteristics for Air Quality Analyses. Research Report TxDOT 0-4142, Texas Department of Transportation, 2002.
• Yu, L., F. Qiao, X. Wang and L. Xu. Using Real-Time Traffic Data for Transportation Planning. Technical Report TxDOT 0-4054, Texas Department of Transportation, 2002.
• Teng, H. L., L. Xu and L. Yu. Synthesis Report on Changeable Message Signs that Depict Symbols and Words. Research Report for the DTFH61-01-X-00126, Federal Highway Administration, 2002.
• Yu, L., R. Daniel and X. Wang. Pavement Smoothness Strategies. Research Report for the DTFH61-01-X-00111, Federal Highway Administration, 2002.
• Teng, H. L., L. Yu and Y. Qi. Analytical Tool for Measuring Emission Impact of Acceleration and Deceleration Lanes. Final Report for New Jersey Department of Transportation and Federal Highway Administration, September 2001.
• Yu, L. Transportation Expertise Pool. Research Report for the DTFH61-00-X-00095, Federal Highway Administration, 2001.
• Yu, L., F. Qiao, L. Munghor, X. Wang and A. Changpradith ITS Technology to improve Highway-Rail Grade Crossing Safety. Research Report for the DTFH61-00-X-00089, Federal Highway Administration, 2001.
• Williams, L. and Yu, L. A Conceptual Examination of the Impact of Traffic Control Strategies on Vehicle Emission and Fuel Consumption. Research Report for the SWUTC-01-467203-1, Center for Transportation Training and Research (CTTR), Texas Southern University, 2001 (72 Pages).
• Boxill S. and Yu,L. Evaluation of Traffic Simulation Models for Supporting ITS Development. Research Report for the SWUTC-00-167602-1, Center for Transportation Training and Research (CTTR), Texas Southern University, 2000 (104 Pages).
• Yu,L. Effects of High Emitter Vehicles on the On-Road Vehicle Emission Modeling. Research Report for the SWUTC-00-467600-1, Center for Transportation Training and Research (CTTR), Texas Southern University, 2000 (117 Pages).
• Yue, P. and Yu,L. Travel Demand Forecasting Models: A Comparison of EMME/2 and QRS II Using a Real-World Network. Research Report for the SWUTC-00-167901-1, Center for Transportation Training and Research (CTTR), Texas Southern University, 2000 (117 Pages).
• Yu,L. Real-Time Calibration of Platoon Dispersion Model to Optimize the Coordinated Traffic Signal Timings in ATMS Networks. Research Report for the SWUTC/99/Project # 472840-00044-1, Center for Transportation Training and Research (CTTR), Texas Southern University, 1999 (57 Pages).
• Didikiri, R. and Yu, L. Traffic Counts and Intersection Analysis of Hidalgo and Post Oak Boulevard. Consulting Report Prepared for Harris County Improvement District #1, Center for Transportation Training and Research (CTTR), Texas Southern University, August 1998 (61 Pages).
• Lede’, W. L., Yu, L., Lewis, C.A., and Godazi, K. A Manual for Evaluating Personalized Public Transit Systems. Report prepared for the Dallas Area Rapid Transit (DART) for the Project “Personalized Public Transit System (PPTS) Operational Test” sponsored by FTA and DART, Center for Transportation Training and Research (CTTR), Texas Southern University, 1998 (110 Pages).
• Yu, L. Collection and Evaluation of Modal Traffic Data for Determination of Vehicle Emission Rates Under Certain Driving Conditions. Research Report 1485-1 (105 Pages), 1485-2 (96 Pages) and 1485-3F (67 Pages) for TxDOT Project No. 0-1485, Center for Transportation Training and Research, Texas Southern University (1998).
• Yu, L. and Lede’, W. N. New Technologies and Methodologies for Evaluating and Analyzing the Implications of Various New Transportation Objectives. Research Report for the SWUTC Project - 466060, Center for Transportation Training and Research, Texas Southern University, 1996 (47 Pages).
   

OTHER SERVICES AND MEMBERSHIPS

• Executive Committee Member, Southwest Region University Transportation Center (SWUTC), 1999-Present.
• Registered Professional Engineer (#88414) in Texas, U.S.
• 2001 Eisenhower Graduate Transportation Fellowships Panelist, Universities & Grants Programs, U.S. Department of Transportation, 2001.
• Co-Chairman of Organization Committee, The 2005 International Workshop on Urban Road Network Reliability, Beijing, China, December 19-20, 2005.
• Technical Advisory Panel in Traffic Operations Committee of TxDOT (RMC 4)
• Member of Institute of Transportation Engineers (# 21803)
• Member of American Society of Civil Engineers (# 35150)
• Member of Transportation Research Board (# 042504-00)
• TRB Transportation and Air Quality Committee (ADC20).
• Steering Committee Member of ITS: Incorporating the Consumer Conference, Feb 19 & 20, 1998, Houston, Texas.
• International Scientific Committee member of the 1998 International Conference on Traffic and Transportation Studies (ICTTS’98), July 27-29, Beijing, China.
• Chair of The 4th Technical Symposium on Important Issues of Transportation Development in China, NACOTA in Association with TRB Annual Meeting, January 7, 2001, Washington, DC.
• Chair of The 5th Technical Symposium on Important Issues of Transportation Development in China, NACOTA in Association with TRB Annual Meeting, January, 2002, Washington, DC.
• President-Elect of North America China Overseas Transportation Association (NACOTA), 2001-2003.