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Effects of variable speed limits on motorway traffic flow

Kosmatopoulos Ilias, Papageorgiou Markos, Ioannis Papamichail

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URIhttp://purl.tuc.gr/dl/dias/2F1B2194-2133-401A-BA03-7825A51DADC0-
Languageen-
TitleEffects of variable speed limits on motorway traffic flowen
CreatorKosmatopoulos Iliasen
CreatorΚοσματοπουλος Ηλιαςel
CreatorPapageorgiou Markosen
CreatorΠαπαγεωργιου Μαρκοςel
CreatorIoannis Papamichailen
PublisherNRC Research Pressen
Content SummaryVariable speed limits (VSLs) displayed on roadside variable message signs (VMSs) have emerged as a widespread traffic control measure on motorways in many countries, leading to substantial traffic safety benefits; however, there is no clear evidence of improved traffic flow efficiency in operational VSL systems. The available information on VSL impact on aggregate traffic flow behavior is summarized, and the issue is investigated in more detail with real traffic data from a European motorway. It is found that VSLs decrease the slope of the now-occupancy diagram at undercritical conditions, shift the critical occupancy to higher values, and enable higher flows at the same occupancy values in overcritical conditions. Implications of the derived findings for more efficient VSL control strategies are discussed. en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-10-23-
Date of Publication2008-
Bibliographic CitationPapageorgiou M., Kosmatopoulos E. and Papamichail I. "Effects of variable speed limits on motorway traffic flow" Transportation Research Record: Journal of the Transportation Research Board, No. no. 2047, pp. 37-48, 2008. DOI: 10.3141/2047-05en

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