New Type of Roundabout: Dual One-Lane Roundabouts on Two Levels with Right-Hand Turning Bypasses – ’’Target Roundabout’’ [PDF]
Promet (Zagreb), 2013 The problems of low level traffic safety on multi-lane roundabouts have been resolved in various ways in different countries, usually by using alternative types of roundabouts that reduce the number of conflict points.
Tomaž Tollazzi +2 more
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Multi-lane Roundabout Capacity Evaluation [PDF]
Frontiers in Built Environment, 2017 Although two-lane roundabouts theoretically exhibit excellent operating performance, in practice, safety problems arise because of inappropriate driving behavior.
Ammar Šarić, Ivan Lovrić
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New Type of Roundabout: Roundabout with “Depressed” Lanes for Right Turning – “Flower Roundabout” [PDF]
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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A computer simulation study of the effects of flaring and turning movements on roundabout entry performance. [PDF]
, 1982 This thesis reports on an investigation carried out to study the effect of flaring and turning movements on the performance of roundabout entries. A computer simulation program was developed to carry out the investigation.
Natsinas, Theodoros
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Comparative Evaluation of Roundabout Capacities Methods for Single-lane and Multi-lane Roundabout [PDF]
, 2023 A roundabout is a highway engineering concept meant to calm traffic, increase safety, reduce stop-and-go travel, reduce accidents and congestion, and decrease traffic delays. It is circular and facilitates one-way traffic flow around a central point. The
Hezha Khalaf Mohammed Ali +1 more
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Effect of vehicle composition and delay on roundabout capacity under mixed traffic conditions [PDF]
Archives of Transport, 2016 Roundabouts are replacing conventional unsignalized intersections in many parts of the world (Polus and Shmueli, 1997). Capacity estimation is necessary for designing a new roundabout, to analyze and improve the existing roundabout facilities.
Dodappaneni Abhigna +2 more
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Capacity Limits of Basic Turbo-Roundabouts
Communications, 2016 Turbo-roundabouts with their specific design characteristics have become a suitable solution of a single-lane roundabouts capacity problem and a standard two-lane roundabouts safety problem.
Andrea Kocianova
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Traffic Circulation Efficiency of Elliptical Roundabouts
ARO-The Scientific Journal of Koya University, 2023 This paper investigates the impact of geometry of central island of roundabout on operational performance in terms of delay and capacity measures. A roundabout with an elliptical central island having major and minor axes of 63 and 44m respectively was ...
Hardi S. Fathullah +5 more
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Two Stop-Line Method for Modern T-Shape Roundabout: Evaluation of Capacity and Optimal Signal Cycle
Journal of Advanced Transportation, 2022 Uncoordinated traffic flows at the traditional roundabouts, especially with a small circumference and fewer lanes, are often heavily affected by congestion, which escalates fuel consumption, CO2 emissions, idling, and travel delay.
Khurrum Jalil +3 more
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A simulation of traffic noise emissions at a roundabout based on a cellular automaton model
Acta Acustica, 2021 The calculation and evaluation of traffic noise is an important task in urban road design. Roundabouts are a common form of urban road intersection. The complexity of traffic operations makes the calculation of traffic noise near a roundabout challenging.
Du Canyi, Qiu Xinfa, Li Feng, Cai Ming
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