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Development and Field Evaluation of a Real-Time Travel Time Prediction System. Final Report.
| 题名： | Development and Field Evaluation of a Real-Time Travel Time Prediction System. Final Report. |
| 作者： | Chang, G.; Wang, J.; Zou, N. |
| 关键词： | Detectors; Forecasting; Freeways; Highways; Implementation; Location; Maryland; Metropolitan Areas; Missing Data; Optimization; Performance Evaluation; Real Time Operations; Travel Patterns; Travel Ti |
| 摘要： | This study has developed a real-time travel time prediction system for a highway segment with sparsely-distributed detectors. The entire system consists of the following principal modules: detector location optimization model, travel time estimation models, missing data imputation model, accident detection models, and travel time prediction models. A field demonstration of the developed system was implemented on the I-70 freeway segment connected to I-695 in the Baltimore metropolitan area. Its performance in providing a reliable travel time prediction was evaluated independently by a consulting firm working for the Maryland Highway Administration. The evaluation results revealed that it is likely to develop a reliable travel time prediction system for commuting corridors if all carefully calibrated detectors have been deployed at proper locations and sufficient historical traffic pattern data have been collected and modeled in advance. The field demonstration has also indicated the need to contend with the critical missing data issues incurred frequently in the real-time operations, especially using the wireless communication systems. |
| 报告类型： | 科技报告 |
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