| Optimize the settings of variable speed limit system to improve the performance of freeway traffic H Liu, L Zhang, D Sun, D Wang IEEE Transactions on Intelligent Transportation Systems 16 (6), 3249-3257, 2015 | 44 | 2015 |
| Comparison and optimization of cordon and area pricings for managing travel demand L Zhang, H Liu, D Sun Transport 29 (3), 248-259, 2014 | 11 | 2014 |
| The optimal unit green extension—considering different demand patterns J Cai, HY Liu, LH Zhang, Z Wang Applied Mechanics and Materials 409, 1357-1365, 2013 | 6 | 2013 |
| Variable speed limit strategy to improve the safety and environmental impact of freeway traffic L Zhang, H Liu, J Sun, D Wang Transportation Research Board 94th Annual MeetingTransportation Research Board, 2015 | 5 | 2015 |
| Nebraska Rail Crossing Safety Research A Khattak, Y Kang, H Liu Nebraska. Department of Transportation, 2020 | 4 | 2020 |
| Updating annual average daily traffic estimates at highway-rail grade crossings with geographically weighted poisson regression H Liu, M Lee, AJ Khattak Transportation research record 2673 (10), 105-117, 2019 | 3 | 2019 |
| Improving Crash Predictions–A More Relevant Exposure Measure than AADT for Highway-Rail Grade Crossing Safety Models A Khattak, H Liu University of Nebraska-Lincoln. University Transportation Center for Railway …, 2018 | 2 | 2018 |
| A Method for Better Estimation of Motor Vehicle Crash Exposure at Highway–Rail Grade Crossings H Liu, AJ Khattak Transportation Research Board 97th Annual MeetingTransportation Research Board, 2018 | 2 | 2018 |
| A Utility-Based Method for Urban Transportation System Multi-Modal Level of Service Evaluation Z Wang, M Zhang, H Liu CICTP 2014: Safe, Smart, and Sustainable Multimodal Transportation Systems …, 2014 | 2 | 2014 |
| Estimation of Vehicular Exposure at Highway-Rail Grade Crossings H Liu The University of Nebraska-Lincoln, 2020 | | 2020 |
| 考虑环境影响的可变限速控制研究 刘慧元 大连理工大学, 2014 | | 2014 |
