Traffic Operation and Control

Wei, D., Liu, H., Tian Z. (2014). Estimation of vehicular delay at unsignalized crosswalks with probabilistic yielding behavior. In press, Transportmetrica A: Transport Science [Preprint]
Ostrander, C., Wei, D., Kumfer, W., Liu, H., & Xu, H. (2014). The Effect of Truck Lane Restrictions on Weaving Segments of Freeways. In Transportation Research Board 93rd Annual Meeting (No. 14-4135).
Xu, H., Liu, H., Fernando H., & Senadheera, S. (2012). Volume-to-capacity estimation of signalized road networks for metropolitan transportation planning. Journal of Transportation Research Record.  2395(1), 93-102 [Preprint]
Chen, S., Liu, H., & Xu, H. (2013) Timing Oversaturated Signals: What Can We Learn from Classic and State-of-the-art Signal Control Models. Journal of Transportation Systems Engineering and Information Technology.13(1), 97-110[Preprint]
Xu, H., Liu, H., Tian, Z., & Zhang, W. (2011). Control Delay Calculation at Diverging Diamond Interchanges. Transportation Research Record: Journal of the Transportation Research Board, 2257(-1), 121-130.[Preprint]
Xu, H., Liu, H., & Tian, Z. (2010). Control delay at signalized diamond interchanges considering internal queue spillback. Transportation Research Record: Journal of the Transportation Research Board, 2173(-1), 123-132.[Preprint]
Tian Z., M. Kyte, & Liu, H. (2009). Vehicle tracking and speed measurement at signalized intersections using video-image systems, ITE Journal, 79(1), 42-46.[Preprint]
Liu, H., Balke, K. N., & Lin, W. H. (2008). A reverse causal-effect modeling approach for signal control of an oversaturated intersection. Transportation Research Part C: Emerging Technologies, 16(6), 742-754.[Preprint]
Cheng, D., Tian, Z. Z., & Liu, H. (2008). Implementing actuated signal-controlled intersection capacity analysis with pedestrians. Transportation Research Record: Journal of the Transportation Research Board, 2071(-1), 125-130.[Preprint]
Tian, Z., Mangal, V., & Liu, H. (2008). Effectiveness of Lead—Lag Phasing on Progression Bandwidth. Transportation Research Record: Journal of the Transportation Research Board, 2080(-1), 22-27.[Preprint]
Lin, W. H., & Liu, H. (2005, September). A mathematical programming module for merge control in system optimal dynamic traffic assignment. In Intelligent Transportation Systems, 2005. Proceedings. 2005 IEEE (pp. 414-419). IEEE.
Yin, Y., Liu, H., & Benouar, H. (2004, October). A note on equity of ramp metering. In Intelligent Transportation Systems, 2004. Proceedings. The 7th International IEEE Conference on (pp. 497-502). IEEE.
Liu, H., and Kuwahara, M. (2001). “An Approach on Network Traffic Signal Control Under The Real-time And Over-saturated Flow Condition.” Proceedings of Transportation Research Board 81st Annual Meeting, Preprint CD-ROM, Washington, D.C., 2001.
Liu, H. and Kuwahara, M. (2000, November). A study on real-time signal control for an isolated over-saturated signalized intersection. Proceedings of the 7th World Congress on ITS, Turin, Italy.

Intelligent Transportation System

Wei, D., Liu, H., Xu, H. & Chen, F. (2013) Adaptive margin support vector regression: theory and application to short-term traffic forecasting. Journal of Intelligent Transportation Systems. 17(4), 317-327. [Preprint]
Quddus, M. A., Ochieng, W. Y., & Liu, H. (2010). EDITORIAL: Special Issue: Intelligent Vehicle Navigation (Part 2).[Preprint]
Xu, H., Liu, H., Tan, C. W., & Bao, Y. (2010). Development and application of an enhanced Kalman filter and global positioning system error-correction approach for improved map-matching. Journal of Intelligent Transportation Systems, 14(1), 27-36.[Preprint]
Wei, H., Xu, T., & Liu, H. (2009). Route-choice models reflecting the use of travel navigation information in a vehicle-based microscopic simulation system. International Journal of Vehicle Information and Communication Systems, 2(1), 27-39.[Preprint]
Quddus, M. A., Ochieng, W. Y., & Liu, H. (2008). EDITORIAL: Special Issue: Intelligent Vehicle Navigation (Part1).[Preprint]
Liu, H., Wei, H., Xu, H., & Bao, Y. (2008, October). Simultaneous correction of GPS error and map error for improved map-matching: algorithm and application. In Proc. of SPIE Vol (Vol. 7145, pp. 71452S-1).
Xu, H., Liu, H., Bao, Y. (2008). An enhanced Kalman filter approach for improved map-matching.” Presented at the 87th Transportation Research Board Annual Meeting, Washington D.C., Jan 13-17.
Liu, H., Xu, H., Scott Norville, H., & Bao, Y. (2008). A Virtual Differential Map-Matching Algorithm with Improved Accuracy and Computational Efficiency. Journal of Navigation, 61(03), 421-434.[Preprint]
Li, L., Lin, W. H., & Liu, H. (2006, March). Type-2 fuzzy logic approach for short-term traffic forecasting. In Intelligent Transport Systems, IEE Proceedings (Vol. 153, No. 1, pp. 33-40). IET. [Preprint]
Zhu, L., Song, J., Huang, Q., Zhang, M., & Liu, H. (2005, June). A novel module of tracking vehicles with occlusion. In Intelligent Vehicles Symposium, 2005. Proceedings. IEEE (pp. 894-899). IEEE.

Public Transit

Sun, L., Rong, J., Yao, L., Xu, H., & Liu, H. (2012). Entropy-based estimation of transfers in a terminal. Transportation Planning and Technology, 35(3), 303-315.[Preprint]
Eugene, D. H., Liu, H., & Machemehl, R.B. (2011) Assessing the Feasibility of Converting Two Way Left Turn Lane into Bus Rapid Transit Lane. Transportation Research Record, No. 2218, 39-47.[Preprint]
Galicia, L. D., Cheu, R. L., Machemehl, R. B., & Liu, H. (2009). Bus rapid transit features and deployment phases for US cities. Journal of Public Transportation, 12(2), 23-28.[Preprint]
Tan, C. W., Park, S., Liu, H., Xu, Q., & Lau, P. (2008). Prediction of Transit Vehicle Arrival Time for Signal Priority Control: Algorithm and Performance. Intelligent Transportation Systems, IEEE Transactions on, 9(4), 688-696.[Preprint]
Tan, C. W., Li, M., Park, S., Liu, H., Lau, P., & Xu, Q. (2008). A supply-demand model for communication of transit signal priority requests. International Journal of Vehicle Information and Communication Systems, 1(3), 249-267.[Preprint]
Tan, C-W, M. Li, S. Park, P. Lau, and H. Liu (2008). Communication of Transit Signal Priority Requests. International Journal of Vehicle Information and Communication Systems, 1(3/4), 249-267.[Preprint]
Liu, H., ZHANG, J., & CHENG, D. (2008). Analytical approach to evaluating transit signal priority. Journal of Transportation Systems Engineering and Information Technology, 8(2), 48-57.[Preprint]
Liu, H., Lin, W. H., & Tan, C. W. (2007). Operational Strategy for Advanced Vehicle Location System–Based Transit Signal Priority. Journal of Transportation Engineering, 133(9), 513-522.[Preprint]
Liu, H., Skabardonis, A., & Li, M. (2006). Simulation of transit signal priority using the NTCIP architecture. Journal of Public Transportation, 9(3), 117.[Preprint]
Tan, C. W., Park, S., Zhou, K., Liu, H., Lau, P., Li, M., & Zhang, W. B. (2006). Prediction of transit vehicle arrival times at signalised intersections for signal priority control. In Intelligent Transportation Systems Conference, 2006. ITSC'06. IEEE (pp. 1477-1482). IEEE.
Li, L., Lin, W. H., & Liu, H. (2005, September). Traffic signal priority/preemption control with colored petri nets. In Intelligent Transportation Systems, 2005. Proceedings. 2005 IEEE (pp. 694-699). IEEE.
Li, M., Yin, Y., Zhou, K., Zhang, W. B., Liu, H., & Tan, C. W. (2005, January). Adaptive transit signal priority on actuated signalized corridors. In 84th Annual Meeting of the Transportation Research Board, Washington, DC.
Liu, H., Alex, Skabardonis, Zhang, W.B, and Lee, M. (2004). “Optimal Location of Detectors for Transit Signal Priority.” Journal of Transportation Research Record, No. 1867, 144-150.
Liu, H., Skabardonis, A., Zhang, W. B., & Li, M. (2004). Optimal detector location for bus signal priority. Transportation Research Record: Journal of the Transportation Research Board, 1867(-1), 144-150.[Preprint]
Liu, H. C., Skabardonis, A., & Zhang, W. B. (2003, January). A dynamic model for adaptive bus signal priority. In Preprint CD-ROM, 82nd Transportation Research Board Annual Meeting, Washington, DC.

Traffic flow theory

Xu, H., Liu, H., & Gong, H. (2013). Modeling the asymmetry in traffic flow (a): microscopic approach. Applied Mathematical Modelling.[Preprint]
Liu, H., Xu, H., & Gong, H. (2013). Modeling the asymmetry in traffic flow (b): Macroscopic approach. Applied Mathematical Modelling.[Preprint]
Wei, D., & Liu, H. (2013). Analysis of asymmetric driving behavior using a self-learning approach. Transportation Research Part B: Methodological, 47, 1-14.[Preprint]
Lin, W. H., & Liu, H. (2010). Enhancing realism in modeling merge junctions in analytical models for system-optimal dynamic traffic assignment. Intelligent Transportation Systems, IEEE Transactions on, 11(4), 838-845.[Preprint]
Gong, H., Liu, H., & Wang, B. H. (2008). An asymmetric full velocity difference car-following model. Physica A: Statistical Mechanics and its Applications, 387(11), 2595-2602.
Liu, H., Song, J., & Yin, Y. (2005, June). A simplified method for estimation of back of queue and its application in macroscopic simulation. In Intelligent Vehicles Symposium, 2005. Proceedings. IEEE (pp. 662-668). IEEE.
Liu, H., Kuwahara, M., and Yoshii, T. (1999). A Traffic Flow Simulation Model for Network Signal Control. Infrastructure Planning, Japan Society of Civil Engineers, Vol.22, No.1, 611-614.

Traffic Safety

Chen, S., Liu, H., Tian, Z. Z., & Hart, J. D. (2009). Surrogate Safety Assessment for a Tight Urban Diamond Interchange Using Micro-Simulation. Advances in Transportation Studies, 18.[Preprint]

Miscellaneous

Chen, Y., He, J., King, M., Liu, H., & Zhang, W. (2012). Dynamic Load-sharing of Longitudinal-connected Air Suspensions of a Tri-Axle Semi-Trailer. In press, Transportation Research Record.[Preprint]