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JOURNAL PAPERS
    102.  Leon Allen and Steven Chien, "Rail Energy Efficiency Improvement by Combining Coasting and Regenerative Braking," The International Journal of Railway Technology, (accepted) May 2020, Reference: IJRT/2016/00519
    101.  Hezhou Qu, Xiaoyue, Xu, and Steven Chien, "Estimating Wait Time and Passenger Load in a Saturated Metro Network: A Data-driven Approach," Journal of Advanced Transportation Systems, Special Issue: Methods and Technologies for Next-Generation Public Transport Planning and Operations, (accepted) April 2020
    100.  Zhuanglin Ma, Shanshan Cui, Steven Chien, and Ying Xiong, "Benefits and Risks of the Driving Restriction Policy: A Case Study of Xi'an, China," IEEE Access, doi: 10.1109/ACCESS.2020.2994375, (accepted) May 2020
    99.   Xi Lu, Zhuanglin Ma, and Steven Chien, "Development of a Partial Proportional Odds Model for Pedestrian Injury Severity at Intersections," Journal of Promet Traffic & Transportation, (Accepted) April 2020
    98.   Ting Xu, Yanjun Hao, Shichao Cui, Xingqi Wu, Zhishun Zhang, and Steven Chien, "Crash risks assessment of off-ramps, based on Gaussian Mixture Model using video trajectories," Sustainability, https://www.mdpi.com/2071-1050/12/8/3076/pdf, April 2020
    97.   Gang Chen, Dawei Hu and Steven Chien, "Optimizing Battery-Electric-Feeder Service and Wireless Charging Locations with Nested Genetic Algorithm," IEEE Access, Volume 8, Issue 1, Issue Date: December 2020
    96.   Celina Semaan, Steven Chien, and Ching-Jung Ting, "Minimizing Cost of Highway Maintenance Considering the Impact of Vehicle Emissions: An Artificial Bee Colony Approach," Transportation Research Record, May 2020, https://doi.org/10.1177/0361198120917667
    95.   Sina Darban Khales, Steven Chien, Joyoung Lee, Branislav Dimitrijevic, "The Effect of Visibility and Warning Device on Driver Injury Severity at Highway-Rail Grade Crossings," International Journal of Injury Control and Safety Promotion, Mar 2020 (https://www.tandfonline.com/doi/full/10.1080/17457300.2020.1737139)
    94.   Liuhui Zhao, Bo Du, and Steven Chien, "Optimizing Work Zone Schedules with Floating Car Data Considering Traffic Diversion Strategies and Managed Lanes," Journal of Transportation Engineering, ASCE, Vol. 145, No. 1, pp. 04018076-1 ~ 04018076-10, January 2019, doi: 10.1061/JTEPBS.0000202.
    93.   Xiaobo Liu, Minghua Huang, Hezhou Qu, and Steven Chien, "Minimizing Metro Transfer Time with the AFCS Data Using Simulated Annealing with Parallel Computing," Journal of Advanced Transportation, Volume 2018, Article ID 4218625, 17 pages, October 2018, https://doi.org/10.1155/2018/4218625.
    92.   Md Shoaib Chowdhury and Steven Chien, "Optimizing Fare and Headway to Facilitate Timed Transfer Considering Demand Elasticity," Transportation Planning and Technology, Vol. 42, No. 1, pp. 56-69, November 2018, https://doi.org/10.1080/03081060.2018.1541282.
    91.   Liuhui Zhao, Steven Chien, Lazar Spasovic, and Xiaobo Liu "Modeling and Optimizing an Urban Bus Transit Considering Headway Variation for Cost and Service Reliability Analysis," Transportation Planning and Technology, Vol. 41, No. 7, pp 706-723, July 2018, https://doi.org/10.1080/03081060.2018.1504181.
    90.   Zhuanglin Ma, Xi Lu, Steven Chien, and Dawei Hu "Investigating Factors Influencing Pedestrian Injury Severity at Intersections," Traffic Injury Prevention, Vol. 19 No. 2, September 2017, pp 159-164.
    89.   Bo Du, Steven Chien, Joyoung Lee, and Lazar Spasovic, "Predicting Freeway Work Zone Delays and Costs with a Hybrid Machine-Learning Model," Journal of Advanced Transportation, Vol. 2017, Article ID 6937385, 8 pages, 2017. doi:10.1155/2017/6937385.
    88.   Liuhui Zhao, Joyoung Lee, Steven Chien, and Cheol Oh, "Shockwave-based Automated Vehicle Longitudinal Control Algorithm for Non-Recurrent Congestion Mitigation," Journal of Advanced Transportation, Vol. 2017, Article ID 6568135, 10 pages, 2017. doi:10.1155/2017/6568135.
    87.   Wangfang Yuan, Xing Liang, Steven Chien, Lang Wei and Shishuo Xue, "Design of Simulation-based Virtual Automobile Experiment Field," ICIC Express Letters Part B: Applications, Vol. 7, Issue 12, November 2016.
    86.   Zhuanglin Ma, Honglu Zhang, Steven Chien, Jin Wang, "Predicting expressway crash frequency using a random effect negative binomial model: A case study in China" Accident Analysis and Prevention 98, pp. 214-222, Jan. 2017
    85.   Mei Xiao, Steven Chien, and Dawei Hu, "Optimizing Coordinated Transfer with Probabilistic Vehicle Arrivals and Passenger Walking Time," Journal of Advanced Transportation, Volume 50, Issue 8, December 2016, pp. 2306-2322, DOI: 10.1002/atr.1460.
    84.   Bo Du, Steven Chien, Joyoung Lee, Lazar Spasovic, and Kyriacos Mouskos, "Artificial Neural Network Model for Estimating Temporal and Spatial Freeway Work Zone Delay Using Probe-Vehicle Data," Journal of Transportation Research Board, Transportation Research Record 2573, October 2016, pp. 164-171.
    83.   Hezhou Qu, Steven Chien, and Xiaobo Liu, Peitong Zhang, and Athanassios Bladikas, "Optimizing Bus Services with Variable Directional and Temporal Demand Usin Genetic Algorithm," Journal of Central South University, Vol.23, No.7, July 2016, pp. 1786-1798.
    82.   Ma Zhuanglin, Steven Chien, Chunjiao Dong, Dawei Hu, and Ting Xu, "Exploring Factors Affecting Injury Severity of Crashes in Freeway Tunnels" Tunnelling and Underground Space Technology 59, June 2016, pp. 100-104.
    81.   Liuhui Zhao, Steven Chien, Jay Meegoda, Zhengzhao Johnny Luo, and Xiaobo Liu, "Cost-benefit Analysis and Microclimate-based Optimization of a RWIS Network" Journal of Infrastructure Systems, ASCE, Vol. 22, No. 2, 04015021, DOI:10.1061/(ASCE)IS.1943-555X.0000278, June 2016.
    80.   Ma Zhuanglin, Wenjing Zhao, Steven Chien, and Chunjiao Dong, "Exploring Factors Contributing to Crash Injury Severity on Rural Two-lane Highways," Journal of Safety Research, http://dx.doi.org/10.1016/j.jsr.2015.09.003, Vol. 55, December 2015, pp. 171-176.
    79.   Liuhui Zhao, Steven Chien, Xiaobo Liu, and Weisong Liu, "Planning a Road Weather Information System with GIS," Journal of Modern Transportation, Vol. 23, No. 3, pp. 176-188, DOI 10.1007/s40534-015-0076-0, September 2015.
    78.   Steven Chien and Yavuz Ulusoy, "Optimal Bus Service Patterns and Frequencies Considering Transfer Demand Elasticity with Genetic Algorithm," Transportation Planning and Technology, Vol. 38, No. 4, pp. 409-424, DOI:10.1080/03081060.2015.1026101, April 2015 http://dx.doi.org/10.1080/03081060.2015.1026101.
    77.   Hong Yang, Bekir Bartin, Kaan Ozbay and Steven Chien, "Investigating Motorists' Behaviors in Response to Supplementary Traffic Control Devices at Land Surveying Work Sites," Traffic Injury Prevention (Taylor & Francis Online), Vol. 15, No. 4, pp.424-430, DOI: 10.1080/15389588.2013.823165, 2014.
    76.   Liuhui Zhao and Steven Chien, "Investigating the Impact of Stochastic Vehicle Arrivals to Optimal Stop Spacing and Headway for a Feeder Bus Route," Journal of Advanced Transportation, Vol. 49, No. 3, pp. 341-357, April 2015.
    75.   Xiaobo Liu, Steven Chien, and Mei Chen, "An Adaptive Model for Travel Time Prediction," Journal of Advanced Transportation, Vol. 48, No. 6, pp 642-654, October 2014.
    74.   Bo Du and Steven Chien, "Feasibility of Shoulder Use for Highway Work Zone Optimization," Journal of Traffic and Transportatin Engineering, Vol. 1, No. 4, pp. 235-246, August 2014.
    73.   Po-Hsin Tzeng, Tung-Yin Lin, and Steven Chien, "Investigating the Impact of Highway Electronic Toll Collection to the External Cost," Technological Forecasting & Social Change, Vol. 86, pp. 265-272, July 2014.
    72.   Layek Abdel-Malek, Steven Chien, Jay Meegoda, and Haifeng Yu, "Approach to Fleet Contracting for Snow Plowing Operations," Journal of Infrastructure Systems, ASCE, Vol. 20 No. 2, pp 04014006 - 1~7, June 2014.
    71.   Steven Chien, Shengyan Gao, Jay Meegoda, and Taha Marhaba, "Fleet Size Estimation for Spreading Operation Considering Road Geometry, Weather and Traffic Conditions," Journal of Transportation and Engineering, Vol. 1, No. 1, pp 1~12, February 2014.
    70.   Chien-hung Wei,Steven Chien, Ming-Jeng Hsu, and Der-jun Wang, "Improving Bus Terminal Operation with Internal Adaptive Traffic Control," Journal of the East Asia Society for Transportation Studies (EASTS), Vol. 10, pp. 1809~1823, December 2013.
    69.   Patricia DiJoseph and Steven Chien, "Optimizing Sustainable Feeder Bus Operation Considering Realistic Networks and Heterogeneous Demand," Journal of Advanced Transportation, Vol. 47, No. 5, pp 483~497, August 2013.
    68.   Hong Yang, Bekir Bartin, Kaan Ozbay and Steven Chien, "Investigating Motorists' Behaviors in Response to Supplementary Traffic Control Devices at Land Surveying Work Sites," Traffic Injury Prevention (Taylor & Francis Online), DOI: 10.1080/15389588.2013.823165, July 2013.
    67.   Steven Chien, Shengyan Gao, and Jay Meegoda, "Fleet Size Estimation for Snowplowing Operation Considering Road Geometry, Weather and Traffic Speed," Journal of Transportation Engineering, ASCE, Vol. 139, No. 9, pp 903~912, May 2013.
    66.   Hansong Tang, Steven Chien, Maroune Temimi, Qu Ke, and Liuhui Zhao, Cheryl Ann Blain, Simon Kraatz, "Vulnerability of Population and Transportation Infrastructure at the East Bank of Delaware Bay due to Coastal Flooding in Sea-level Rise Conditions," Natural Hazards (Journal of the International Society for the Prevention and Mitigation of Natural Hazards), April 2013, DOI 10.1007/s11069-013-0691-1. http://link.springer.com/article/10.1007%2Fs11069-013-0691-1
    65.   Chuck Feng-Ming Tsai, Steven Chien, and Louis Chien-Hung Wei, "Joint Optimization of Temporal Headway and Differential Fare for Transit Systems Considering Heterogeneous Demand Elasticity." Journal of Transportation Engineering, ASCE, Vol. 139, No. 1, pp 30~39, January 2013.
    64.   Steven Chien and Yimin Tang, "Scheduling Highway Work Zones with Genetic Algorithm Considering the Impact of Traffic Diversion," Journal of Advanced Transportation (accepted for publication), Article first published online: DOI: 10.1002/atr.213, March 2012.
    63.   Xiaobo Liu, Steven Chien, and Kitae Kim, "Evaluation of Floating Car Technologies for Travel Time Estimation", Journal of Modern Transportation, Volume, Number 1, pp 49~56, March 2012.
    62.   Steven Chien and Xiaobo Liu, "An Investigation of Measurement for Travel Time Variability,"Intelligent Transportation Systems, InTech - Open Access, pp. 21~40, March 2012.
    61.   Steven Chien and Kiran Kolluri, "Evaluation of Freeway Travel Time Variability and Reliability under Adverse Weather with TRANSMIT Data," Journal of Civil Engineering and Architecture, Vol.6, No. 1, pp 1~11, January 2012.
    60.   Md Shoaib Chowdhury and Steven Chien, "Joint Optimization of Bus Size, Headway, and Slack Time for Efficient Timed Transfer," Journal of Transportation Research Board, TRR No. 2218, pp 48~58, October 2011.
    59.   Kitae Kim and Steven Chien, "Optimal Train Operation for Minimum Energy Consumption Considering Track Alignment, Speed Limit, and Schedule Adherence," Journal of Transportation Engineering,ASCE, Vol. 137, No. 9, pp 665~674, September 2011.
    58.   Steven Chien and Jiangtao Luo, and Ching-Jung Ting, "Optimization of Dynamic Multi-ramp Metering Control with Simultaneous Perturbation Stochastic Approximation," International Journal of Operations Research, Vol. 8, No. 1, pp 23~35, January 2011.
    57.   Kitae Kim and Steven Chien, "Simulation-based Analysis of Train Controls under Various Track Alignments," Journal of Transportation Engineering, ASCE, Vol. 136, No. 11, pp 937~948, October 2010.
    56.   Steven Chien and Yavuz Ulusoy, "Optimal All-Stop, Short-Turn, and Express Transit Services under Heterogeneous Demand," Journal of the Transportation Research Board - Transportation Research Record, TRR No. 2197, pp 8~18, November 2010.
    55.   Steven Chien and Haifeng Yu, and Ching-jung Ting, "A Bi-level Programming Model for Minimum Cost Travel Time Data Collection with Time-Windows," Journal of the Transportation Research Board - Transportation Research Record, TRR No. 2197, pp 29~35, November 2010.
    54.   Yimin Tang and Steven Chien, "Create a Diversion - Combined with work-zone scheduling, traffic tactic can help reduce congestion and increase safety." Safety Today - A Supplement of ROADS & BRIDGES, pp 9~12, August 2010.
    53.   Steven Chien, Yavuz Ulusoy, and Chien-Hung Wei, "Integrated Transit Services for Minimum Cost Operation Considering Heterogeneous Demand," Transportation Planning and Technology, Vol. 33, No. 7, pp 605~624, Septembert 2010.
    52.   Steven Chien, Jongho Byun, and Athanassios Bladikas, "Optimal Stop Spacing and Headway of Congested Transit System Considering Realistic Wait Time," Transportation Planning and Technology, Vol. 33, No. 6, pp 495~513, June 2010.
    51.   Steven Chien, Keir Opie, and Kaan Ozbay, "Analysis and Modeling of Evacuation for Cape May County, New Jersey," Institute of Transportation Engineer Journal, pp 69~75, September 2009.
    50.   Yimin Tang and Steven Chien, "Genetics at Work - How to Save Time, Money, and Tempers at Roadway Workzones," Traffic Technology International, 2009 Annual Showcase, pp 34~37, March 2009.
    49.   Yimin Tang and Steven Chien, "Orange Eyes - Genetic Engineering Makes Work Zones More Efficient, Safer," Transportation Management and Engineering, Vol. 13, No. 3, pp 12~15, July 2008.
    48.   Feng-Ming Tsai, Steven Chien, and Lazar Spasovic, "Optimizing Distance - Based Fares and Headway of an Intercity Transportation System with Elastic Demand and Trip Length Differentiation," Journal of the Transportation Research Board, TRR No. 2089, pp 101~109, January 2008.
    47.   Yimin Tang and Steven Chien, "Scheduling Work Zones for Highway Maintenance Project Considering Variable Time-cost Relation," Journal of the Transportation Research Board, TRR No. 2055, pp 21~30, October 2008.
    46.   Steven Chien and Jiangtao Luo, "Optimization of Dynamic Ramp Metering Control with Simultaneous Perturbation Stochastic Approxination," International Journal of Control and Intelligent Systems, Vol. 36, No. 1, pp 57~63, January 2008. http://www.actapress.com/Content_of_Journal.aspx?JournalID=98#pages
    45.   Steven Chien and Feng-Ming Tsai, "Optimization of Fare Structure and Service Frequency for Maximum Profitability of Transit System," Journal of Transportation Planning and Technology, Vol. 30, No. 5, pp 477~500, October 2007.
    44.   Mei Chen, Jason Yaw, Steven Chien, and Xiaobo Liu, "Using AVL/APC Data in Bus Arrival Time Prediction," Journal of Advanced Transportation, Vol. 41, No. 3, pp 267~283, Fall 2007.
    43.   Steven Chien, Sunil Kumar Daripally, and Kitae Kim, "Development of a Probabilistic Model to Disseminate Bus Arrival Times," Journal of Advanced Transportation, Vol. 41, No. 2, pp 477~500, Spring 2007.
    42.   Steven Chien, and Vivek Korikanthimath, "Optimization of Staged Evacuation for Emergency Transportation Management," the Journal of Transportation Engineering, ASCE, Vol. 133, No. 3, pp 190~197, March 2007.
    41.   Steven Chien, Kitae Kim, and Janice Daniel, "Cost and Benefit Analysis for Optimized Signal Timing " Case Study: New Jersey Route 23" ITE Journal, Vol. 76, No. 10, pp 37~41, October 2006.
    40.   Steven Chien, Keir Opie, and Kaan Ozbay, "Analysis and Modeling of Evacuation for Cape May County, New Jersey," Institute of Transportation Engineer Journal, pp 69~75, 2006.
    39.   Jaykrishna Patraik, Steven Chien, and Athanassios Bladikas, "Using Data Mining Techniques on APC Data to Develop Effective Bus Scheduling Plans," Journal of Systemics, Cybernetics, and Informatics (JSCI), Vol. 4, 2006.
    38.   Steven Chien, "Optimization of Headway, Vehicle Size, and Route Choice for Minimum Cost Feeder Service," Journal of Transportation Planning and Technology, Vol. 28, No. 5, pp. 359~380, 2005.
    37.   Kaan Ozbay, Bekir Bartin, and Steven Chien, "South Jersey Real-Time Motorist Information System: Technology and Practice," Journal of the Transportation Research Board, TRR No. 1886, pp 68~75, 2004.
    36.   Janice Daniel and Steven Chien, "Truck Safety Factors on Urban Arterials," Journal of Transportation Engineering, ASCE, Vol. 130, No. 6, pp 742~752, 2004.
    35.   Mei Chen, Xiaobo Liu, Jingxin Xia, and Steven Chien, "A Dynamic Bus Arrival Time Prediction Model Based on APC Data," Journal of Computer-Aided and Infrastructure Engineering, Vol. 19, No. 5, pp 364~376, September 2004.
    34.   Steven Chien and Zhouqiong Qin, "Optimal Bus Stop Locations for Improving Transit Accessibility," Journal of Transportation Planning and Technology, Vol. 27, No. 3, pp 211~227, June 2004.
    33.   Jaikrishna Patraik, Steven Chien, and Athanassios Bladikas, "Prediction of Bus Arrival Times with AVL/APC Data," Journal of Public Transportation, Vol. 7, No. 1, pp 1~20, 2004.
    32.   Chandra Mouly Kuchipudi, and Steven Chien, "Development of a Hybrid Model for Dynamic Travel Time Prediction," Journal of the Transportation Research Board, TRR No. 1855, pp 22~31, 2003.
    31.   Steven Chien, Xiaobo Liu, and Kaan Ozbay, "Predicting Travel Times for the South Jersey Real-Time Motorist Information System," Journal of the Transportation Research Board, TRR No. 1855, pp 32~40, 2003.
    30.   Steven Chien, Chuck Tsai, and Edwin Hou, "Optimization of Multi-Route Feeder Bus Service - An Application of GIS," Journal of the Transportation Research Board, TRR No. 1857, pp 56~64, 2003.
    29.   Rajat Rajbhandari, Steven Chien, and Janice Daniel, "Development of Statistic Models for Estimating Bus Dwell Times with AVL/APC Data," Journal of the Transportation Research Board, TRR No. 1841, pp 120~127, 2003.
    28.   Steven Chien, Branislav Dimitrijevic, and Lazar Spasovic, "Bus Route Planning Optimization in Urban Commuter Networks," Journal of Public Transportation, Vol. 6, No.1, pp 53~80, 2003.
    27.   Steven Chien, and Chandra Mouly Kuchipudi, "Dynamic Travel Time Prediction with Real-time and Historical Data," Journal of Transportation Engineering, ASCE, Vol. 129, No. 6, pp 608~616, 2003.
    26.   Steven Chien and Md Shoaib Chowdhury, "Intermodal Transit System Coordination," Journal of Transportation Planning and Technology, Vol. 25, No. 4, pp 257~288, December 2002.
    25.   Janice Daniel, Feng-Ming Tsai, and Steven Chien, "Factors Influencing Truck Crashes on Roadways with Intersections," Journal of Transportation Research Board,. TRR No.1818, pp 54~59, December 2002.
    24.   Steven Chien, Guancheng Li, and Janice Daniel, "Geographic Information System - Based Truck Accident Information and Management System," Journal of Transportation Research Board, TRR No. 1818, pp 134~142, December 2002.
    23.   Steven Chien and Lazar Spasovic, "Optimization of Grid Bus Transit Systems with Elastic Demand," Journal of Advanced Transportation, Vol. 36, No. 1, pp 63~91, September 2002.
    22.   Steven Chien, Dimitrios Goulias, Shmuel Yahalom, and Md Shoaib Chowdhury, "Simulation Based Estimations of Delays at Freeway Work Zones," Journal of Advanced Transportation, Vol. 36, No. 2, pp 131~156, September 2002.
    21.   Steven Chien, Yuqing Ding, and Chien-hung Wei, "Dynamic Bus Arrival Time Prediction using Artificial Neural Networks," Journal of Transportation Engineering, ASCE, Vol. 128, No. 5, pp 429~438, September/October 2002.
    20.   Steven Chien, Yimin Tang, and Paul Schonfeld, "Optimizing Work Zones for Two-Lane Highway Maintenance Projects," Journal of Transportation Engineering, ASCE, Vol. 128, No. 2, pp 145~155, March/April 2002.
    19.   Steven Chien, Joseph Wen, Ching-Tung Ting, and Jing Qu, "Lane Occupancy Delay Estimation Systems (LODES) for Logistics Information Management," Logistics Information Management - An International Journal, Volume 15, No. 1 and 2, pp 58 ~ 71, 2002.
    18.   Mei Chen and Steven Chien, "Dynamic Freeway Travel Time Prediction Using Probe Vehicle Data: Link-Based vs. Path-Based," Journal of the Transportation Research Board, TRR No. 1768, pp. 157~161, 2002.
    17.   Steven Chien, Lazar Spasovic, Renu Chhonkar, and Spyridon Elefsiniotis, "Evaluation of Feeder Bus Systems with Probabilistic Time "Varying Demands and Non-Additive Time Costs," Journal of the Transportation Research Board, TRR No. 1760, pp. 47~55, 2002.
    16.   Steven Chien, "Evaluating Ramp Metering Control Systems Using Microsimulation for the US Interstate Highway I-80," Tamkang Journal of Science and Engineering - An International Journal, Vol. 4, No. 4, pp. 277 ~ 292, (Special Issue on Civil Engineering Technology), December 2001.
    15.   Md Shoaib Chowdhury and Steven Chien, "Dynamic Vehicle Dispatching at Intermodal Transfer Stations," Journal of the Transportation Research Board, TRR No. 1753, pp 61~68, December 2001.
    14.   Yuqing Ding and Steven Chien, "Improving Transit Service Quality and Headway Regularity with Real-Time Control," Journal of the Transportation Research Board, TRR No. 1760, pp 161 ~ 170, December 2001.
    13.   Steven Chien, Kyriacos Mouskos, and Md Shoaib Chowdhury, "Generating Driver Population for the Microscopic Simulation Model (CORSIM)," SIMULATION, Vol. 76, No.1, pp 40 ~ 45, January 2001.
    12.   Steven Chien and Paul Schonfeld, "Optimal Work Zone Lengths for Four-Lane Highways," Journal of Transportation Engineering, ASCE, Vol. 127, No. 2, pp124~131, 2001.
    11.   Steven Chien, Zhaowei Yang, and Edwin Hou, "A Genetic Algorithm Approach for Transit Route Planning and Design," Journal of Transportation Engineering, ASCE,Vol. 127, No. 3, pp 200~207, 2001.
    10.   Steven Chien, Yuqing Ding, and, Noreen Zayas, "Simulating Bus Operations with Enhanced Corridor Simulator Case Study of New Jersey Transit Bus Route #39," Journal of the Transportation Research Board , TRR No. 1731, pp. 104 ~ 111, 2001.
    9.     Mei Chen and Steven Chien, "Determining the Number of Probe Vehicles for Freeway Travel Time Estimation Using Microscopic Simulation," Journal of the Transportation Research Board, TRR No. 1719, pp 61~68, January 2001.
    8.     Eric Ho, Steven Chien, and Ching-Jung Ting, "A Hybrid Modeling Method for the Planning and Evaluation of Intelligent Transportation Systems," Journal of Transportation Planning and Technology , Vol. 24, No. 1, pp 1~23, 2000.
    7.     Steven Chien and Zhaowei Yang, "Optimal Feeder Bus Routes with Irregular Street Networks," Journal of Advanced Transportation, Vol. 34, No. 2, pp 213~248, Summer 2000.
    6.     Steven Chien, Md Shoaib Chowdhury, Kyriacos Mouskos, and Yuqing Ding, "Enhancements of the CORSIM Model in Simulating Transit Vehicle Operations," Journal of Transportation Engineering, ASCE, Vol. 126, No. 5, pp 396~404, September 2000.
    5.     Mei Chen, David Bernstein, Steven Chien, and Kyriacos Mouskos, "Simplified Formulation for the Toll Design Problems," Journal of the Transportation Research Board, TRR No. 1667, pp 88~95, 2000.
    4.     Kyriacos Mouskos, Wu Sun, Steven Chien, Arthur Eisdorfer, and Tao Qu, "Effect of Mid-Block Access Points on Traffic Acc. on State Highways in NJ," Journal of the Transportation Research Board, TRR No. 1665, pp. 75 ~ 83, 2000.
    3.     Paul Schonfeld and Steven Chien, "Optimal Work Zone Lengths for Two Lane Highways," Journal of Transportation Engineering, ASCE, Vol. 125, No. 1, pp 21~29, January 1999.
    2.     Steven Chien and Paul Schonfeld, "Joint Optimization of a Rail Transit Line and its Feeder Bus System," Journal of Advanced Transportation, Vol. 32, No. 3, pp. 253-284, Fall/Winter 1998.
    1.     Steven Chien and Paul Schonfeld, "Optimization of Urban Grid Transit System in Heterogeneous Urban Environmental," Journal of Transportation Engineering, ASCE , Vol. 123, No. 1, pp. 28~35, January/February 1997.
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