Results 21 to 30 of about 14,477 (290)

The magic roundabout [PDF]

open access: yesBMJ, 2006
It is 2015, and what goes around has come around several times in the past 10 years. Back in 2005, Zebedee, or whoever it was who spun the magic roundabout from the Department of Health, seemed confused about the difference between change and progress. Change produced instant good-news stories but constant disruption within the health service. Progress
openaire   +2 more sources

Physical-Mechanical properties of wood based composite reinforced with recycled polypropylene and cowpea (Vigna unguiculata Walp.) husk

open access: yesCleaner Materials, 2022
The need for a sustainable environment and biomass valorization has encouraged research on the recycling of agro and industrial wastes into roofing tiles, ceiling boards, particleboards and furniture. In this study, eco-friendly panels were produced from
Esther Nneka Anosike-Francis   +6 more
doaj   +1 more source

A Speed Optimization Strategy for Smooth Merging of Connected and Automated Vehicles at T-Shape Roundabout

open access: yesIEEE Access, 2022
This paper establishes a novel holistic T-shape roundabout coordination system (TCS) that addresses the connected and automated vehicles (CAVs) flow at a typically isolated T-shape roundabout.
Khurrum Jalil   +3 more
doaj   +1 more source

Effect of vehicle composition and delay on roundabout capacity under mixed traffic conditions [PDF]

open access: yesArchives 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
doaj   +1 more source

Improving the traffic safety by converting an existing conventional multilane traffic roundabout to a look-a-like turbine roundabout (case study) [PDF]

open access: yesPrzegląd Komunikacyjny, 2023
: The article addresses the issue of converting existing conventional multilane roundabout to a look-a-like turbine traffic roundabout. A case has been proposed by reviewing different solutions of traffic control devices on existing conventional ...
Alicja Sołowczuk, Anna Olszewska
doaj   +1 more source

Intersection Sight Distance Characteristics of Turbo Roundabouts

open access: yesDesigns, 2021
A turbo roundabout uses spiral circulatory roads for effectively counteracting the problems faced in modern multilane roundabouts. First developed in 1996, the turbo roundabout has an advantage over the conventional roundabout regarding capacity and ...
Akshay Salwan   +3 more
doaj   +1 more source

Traffic Circulation Efficiency of Elliptical Roundabouts

open access: yesARO-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
doaj   +1 more source

A safety analysis of roundabouts and turbo roundabouts based on Petri nets [PDF]

open access: yesTraffic 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
openaire   +3 more sources

Evaluating the operational and the environmental benefits of a smart roundabout

open access: yesSouth African Journal of Industrial Engineering, 2015
Vehicle fuel consumption and emission rates in Kuwait have increased considerably over recent decades, and are now causing health and economic problems.
Alkhaledi, Khaled Ali
doaj   +1 more source

Cooperative Roundabout Control Strategy for Connected and Autonomous Vehicles

open access: yesApplied Sciences, 2022
Intersections in the urban network are potential sources of traffic flow inefficiency. Existing intersection control mostly adopts the “cross” flow pattern model, while the use of the roundabout circular flow pattern is rather sparse.
Chaojie Wang, Yu Wang, Srinivas Peeta
doaj   +1 more source

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