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Institutional Repository [SANDBOX]
Technical University of Crete
Technical University of Crete
EN
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EL
| URI | http://purl.tuc.gr/dl/dias/3ED9D4F1-8242-4AE3-A879-8FD27CAE9E31 | - |
| Identifier | https://doi.org/10.1016/j.trc.2015.08.016 | - |
| Language | en | - |
| Extent | 22 pages | en |
| Title | Local ramp metering with distant downstream bottlenecks: a comparative study | en |
| Creator | Kan Yuheng | en |
| Creator | Wang Yibing | en |
| Creator | Papageorgiou Markos | en |
| Creator | Παπαγεωργιου Μαρκος | el |
| Creator | Papamichail Ioannis | en |
| Creator | Παπαμιχαηλ Ιωαννης | el |
| Publisher | Elsevier | en |
| Description | The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013) / ERC Grant Agreement n. 321132, project TRAMAN21. | en |
| Content Summary | The well-known feedback ramp metering algorithm ALINEA can be applied for local ramp metering or included as a key component in a coordinated ramp metering system. ALINEA uses real-time occupancy measurements from the ramp flow merging area that may be at most a few hundred meters downstream of the metered on-ramp nose. In many practical cases, however, bottlenecks with smaller capacities than the merging area may exist further downstream, which suggests using measurements from those downstream bottlenecks. Recent theoretical and simulation studies indicate that ALINEA may lead to poorly damped closed-loop behavior in this case, but PI-ALINEA, a suitable Proportional-Integral (PI) extension of ALINEA, can lead to satisfactory control performance. This paper addresses the same local ramp-metering problem in the presence of far-downstream bottlenecks, with a particular focus on the employment of PI-ALINEA to tackle three distinct cases of bottleneck that may often be encountered in practice: (1) an uphill case; (2) a lane-drop case; and (3) an un-controlled downstream on-ramp case. Extensive simulation studies are conducted on the basis of a macroscopic traffic flow model to show that ALINEA is not capable of carrying out ramp metering in these bottleneck cases, while PI-ALINEA operates satisfactorily in all cases. A field application example of PI-ALINEA is also reported with regard to a real case of far downstream bottlenecks. With its control parameters appropriately tuned beforehand, PI-ALINEA is found to be universally applicable, with little fine-tuning required for field applications. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by-nc-nd/4.0/ | en |
| Date of Item | 2017-11-13 | - |
| Date of Publication | 2016 | - |
| Subject | PI-ALINEA | en |
| Subject | ALINEA | en |
| Subject | Time delay | en |
| Subject | Distant downstream bottlenecks | en |
| Subject | Local ramp metering | en |
| Bibliographic Citation | Y. Kan, Y. Wang, M. Papageorgiou and I. Papamichail, "Local ramp metering with distant downstream bottlenecks: a comparative study," Transportation Research Part C, vol. 62, pp. 149-170, 2016. doi: 10.1016/j.trc.2015.08.016 | en |
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