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Analytical traffic models for roundabouts with pedestrian crossings
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- Bergman, Astrid (författare)
- Trivector Traffic, Lund, Sweden
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- Olstam, Johan, 1979- (författare)
- Statens väg- och transportforskningsinstitut,Trafikanalys och logistik, TAL,Linköpings universitet, Kommunikations- och transportsystem,Kommunikations- och transportsystem,Tekniska högskolan,Trafiksystem
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- Allström, Andreas (författare)
- Linköpings universitet,Kommunikations- och transportsystem,Tekniska högskolan,Trafiksystem
- (creator_code:org_t)
- Elsevier BV, 2011
- 2011
- Engelska.
- Serie: Procedia - Social and Behavioral Sciences, 1877-0428 ; 16
- Ingår i: Procedia - Social and Behavioral Sciences. - : Elsevier BV. - 1877-0428. ; 16, s. 697-708
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Roundabouts have become a more common type of intersection in Sweden over the last 30 years. In order to evaluate the roundabout level-of-service both analytical models and simulation models are being used. Analytical traffic models for intersections, such as the Swedish capacity model Capcal, has difficulties estimating the level-of-service of a roundabout if there are pedestrians and cyclists at crossings located close to the roundabout. It is well known that a crossing located after a roundabout exit can cause an up-stream blocking effect that affects the performance of the roundabout. But how the upstream blocking effect depends on the different flows of vehicles and pedestrians is not known. In this paper an existing analytical model by Rodegerdts and Blackwelder has been investigated and compared to simulations in VISSIM and measurements from Swedish roundabouts. The purpose of this investigation is to examine if the model by Rodegerdts and Blackwelder is suitable for implementing into existing analytical models such as Capcal. The results show that the model by Rodegerdts and Blackwelder can estimate if a capacity loss will occur, but the magnitude of this loss is more difficult to evaluate. The conclusion and recommendation is that the model by Rodegerdts and Blackwelder should be implemented into the Swedish capacity model Capcal. The model by Rodegerdts and Blackwelder is to be used as a warning system if the results in Capcal are too uncertain to use for analysis of the roundabout performance.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
Nyckelord
- Level of service
- Roundabout
- Sweden
- Pedestrian
- Road: Traffic theory
- Road: Traffic theory
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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