Results 21 to 30 of about 194 (156)
New Type of Roundabout: Roundabout with “Depressed” Lanes for Right Turning – “Flower Roundabout”
Promet (Zagreb), 2011 Recently, many of the foreign traffic-safety analyses point out the low level of traffic safety in multi-lane roundabouts. This problem is resolved in several ways in different countries; however, the solution, whereby the number of conflict points is ...
Tomaž Tollazzi +2 more
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Estimation of Passenger Car Equivalents for Two-Lane and Turbo Roundabouts Using AIMSUN
Frontiers in Built Environment, 2020 The paper addresses issues related to Passenger Car Equivalents (PCEs) at roundabouts. Compared to other road units, the curvilinear elements of roundabout geometric design may impose greater constraints on vehicular trajectories and have a significant ...
Anna Granà +3 more
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Интеллект. Инновации. Инвестиции, 2020 In large cities, a situation often arises when roundabout intersections of highways no longer cope with the passage of traffic flows. The main reasons for this problem are the inconsistency of the potential traffic capacity of the roundabout with real ...
V. I. Rassokha , N. A. Nikitin
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Promet (Zagreb), 2017 This paper compared the performance of elliptical roundabout with turbo and modern roundabouts. It considers the effects of increasing the central island radius and speed limit on delay and capacity.
Hadi Hatami, Iman Aghayan
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Capacity of normal and turbo-roundabouts: comparative analysis [PDF]
Proceedings of the Institution of Civil Engineers - Transport, 2014 While researchers agree as to the safety benefits of turbo-roundabouts, their improvements in terms of capacity and delay remain open to discussion. This is mostly because previous research is based on capacity models that do not fully describe the complex interactions between traffic streams on multi-lane roundabouts.
Vasconcelos, Luís +2 more
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Study of driver behaviour at turbo-roundabouts
Archives of Transport, 2016 The article presents the results of preliminary research into the behaviour of drivers at turbo-roundabouts. The subject of the research included the frequency of driver behaviour against the traffic rules, and the speed at which vehicles drive through turbo-roundabouts.
Janusz Chodur, Radosław Bąk
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A safety analysis of roundabouts and turbo roundabouts based on Petri nets [PDF]
Traffic Injury Prevention, 2019 Objective: In this work, a roundabout and a turbo roundabout model are compared and previous modeling with continuous Petri nets and safety are analyzed through indicators of complexity. Petri nets are a graphic and mathematical representation that allow a faithful modeling of urban systems.
Jesús Balado +3 more
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Microsimulation-based passenger car equivalents for heavy vehicles driving turbo-roundabouts
Transport, 2016 Due to its geometric design, turbo-roundabouts impose greatest constraints to the vehicular trajectories; by consequence, one can expect a more unfavourable impact of heavy vehicles on the traffic conditions than on other types of roundabouts.
Orazio Giuffrè +3 more
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Capacity Model for Single-Lane Minor Entry at Turbo-Roundabouts
Civil and Environmental Engineering, 2021 Spirally arranged and physically separated traffic lanes in the circulatory carriageway of turbo-roundabouts force drivers to choose a particular entry lane and, subsequently, a circulatory traffic lane according to their intended destination.
Kociánová Andrea
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Performance Analysis of Basic Turbo-Roundabouts in Urban Context
Procedia - Social and Behavioral Sciences, 2012 AbstractA turbo roundabout is a new type of canalized multilane intersection in which the physical separation between lanes helps to prevent side collisions when crossing the roundabout. This paper presents an estimation of capacity, delays and level of service of basic turbo roundabouts in undersaturation conditions, considering both vehicle flow and ...
CORRIERE, Ferdinando, GUERRIERI, Marco
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