原文传递
Empirical random phase transitions between free flow and synchronized flow at highway bottlenecks
| 题名： | Empirical random phase transitions between free flow and synchronized flow at highway bottlenecks |
| 正文语种： | 英文 |
| 作者： | Yildirim Dulgar;Sven-Eric Molzahn;Hubert Rehborn;Micha Koller;Boris S.Kerner;Dominik Wegerle;Michael Schreckenberg;Michael Menth;Sergey L. Klenov |
| 作者单位： | University of Tubingen;Institute of Physics and Technology |
| 关键词： | Empirical traffic flow; probe vehicle data; three-phase traffic theory; traffic breakdown; phase transitions between free flow and synchronized flow |
| 摘要： | Based on a study of probe vehicle data measured on different highways during different days we have revealed some common empirical microscopic characteristic features of sequences of phase transitions from free flow to synchronized flow and back from synchronized flow to free flow occurring before traffic breakdown at a highway bottleneck predicted theoretically by Kerner. Following common empirical features of sequences of these phase transitions have been found: (i) Sequences of empirical phase transitions from free flow to synchronized flow and back from synchronized flow to free flow are observed on differe nt highways at different bottle necks, (ii) Empirical seque nces of the phase transi-tions exhibit a random character, in particular, at different days very different sequences of phase transitions from free flow to synchronized flow and back from synchronized flow to free flow have bee n observed at the same bottle neck, (iii) Time durati ons betwee n the tran-sition from free flow to synchronized flow and the subsequent transition from synchronized flow to free flow within a sequenee of the phase transitions are random values. Time intervals between subsequent sequences of the phase transitions are also random values, (iv) Regions of dissolving synchronized flow that result from sequences of phase transitions from free flow to synchronized flow and back from synchronized flow to free flow exhibit random characteristics, (v) Several foliowing each other sequences of phase transitions from free flow to synchronized flow and back from synchronized flow to free flow can lead to waves of synchronized flow between free flow. |
| 出版日期： | 2020 |
| 出版年： | 2020 |
| 期刊名称： | Journal of Intelligent Transportation Systems Technology Planning and Operations |
| 卷： | Vol24 |
| 期： | No01-06 |
| 页码： | 539-555 |
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