Results 21 to 30 of about 194 (151)
Comparing Performances of Turbo-roundabouts and Double-lane Roundabouts
Modern Applied Science, 2012 Starting from assumptions regarding the arrival process of circulating streams and according to models based on the gap-acceptance theory, the paper is aimed at comparing operational performances between basic turbo-roundabouts and double-lane roundabouts.
Orazio Giuffrè +2 more
openaire +3 more sources
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
doaj +1 more source
Turbo-roundabouts vs Roundabouts Performance Level
Procedia - Social and Behavioral Sciences, 2012 AbstractIn this paper the performance level of basic turbo-roundabouts and double-lane roundabouts are compared. Cowan's M3 headway distribution was chosen to take into account bunched vehicles moving along each circulating lane; the Hagring model was adopted to evaluate entry capacity both at turbo-roundabout and at double-lane roundabout.The ...
GIUFFRE', Orazio +2 more
openaire +2 more sources
Comparative Analysis of "Turbo", "Reduced-Turbo", "Flower" and "Semi-Turbo" Roundabout
Tehnički vjesnik, 2020 A growing number of studies, presented in scientific and professional literature, point out a poor traffic safety characteristic of "standard" two-lane roundabouts, and lower capacity than expected. These problems are resolved in different ways in different countries; however, the most successful solution has proven to be reducing the number of ...
Tollazzi, Tomaž +3 more
openaire +4 more sources
Conversion of Existing Roundabouts into Turbo-Roundabouts: Case Studies from Real World [PDF]
Journal of Civil Engineering and Architecture, 2012 Compared with roundabouts the main advantages of turbo-roundabouts are the reduction in the number of potential conflicting points and the lower speed of vehicles passing through the intersection, they both can improve safety conditions at the junction. Moreover, the physical delimitation among lanes limits the side-by-side accident risk. These aspects
GIUFFRE' O, GUERRIERI M, GRANA' A.
openaire +3 more sources
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
doaj +1 more source
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
doaj +1 more source
The Surrogate Safety Appraisal of the Unconventional Elliptical and Turbo Roundabouts
Journal of Advanced Transportation, 2018 Double-lane roundabouts have been created in many European countries over the past few centuries and are now characterized by an unsafe geometric development and by a low sustainability capacity or level.
Giovanni Tesoriere +3 more
doaj +1 more source
Assessing the Environmental Performances of Urban Roundabouts Using the VSP Methodology and AIMSUN
Energies, 2022 In line with globally shared environmental sustainability goals, the shift towards citizen-friendly mobility is changing the way people move through cities and road user behaviour.
Francesco Acuto +5 more
doaj +1 more source
Energies, 2021 Urban agglomerations close to road infrastructure are particularly exposed to harmful exhaust emissions from motor vehicles and this problem is exacerbated at road intersections.
Maksymilian Mądziel +3 more
doaj +1 more source