Results 21 to 30 of about 5,725 (291)

Capacity Limits of Basic Turbo-Roundabouts

open access: yesCommunications, 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
doaj   +1 more source

Multi-lane Roundabout Capacity Evaluation

open access: yesFrontiers 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
doaj   +1 more source

Group Gap Acceptance: A New Method to Analyze Driver Behavior and Estimate the Critical Gap at Multilane Roundabouts

open access: yesJournal of Advanced Transportation, 2018
The operations of multilane roundabouts, especially three-lane roundabouts, are unique and more complicated than any other type of roundabouts. This study aims to analyze driver behavior and estimate the critical gap at three-lane roundabouts. Video data
Khaled Shaaban, Hassan Hamad
doaj   +1 more source

New Type of Roundabout: Dual One-Lane Roundabouts on Two Levels with Right-Hand Turning Bypasses – ’’Target Roundabout’’

open access: yesPromet (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
doaj   +1 more source

Evaluation of the Safety Performance of Turbo Roundabouts by Means of a Potential Accident Rate Mode

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2015
Turbo roundabouts are a particular road intersection layout, designed to increase the safety of double-lane roundabouts, while maintaining their excellent capacity.
Raffaele Mauro   +2 more
doaj   +1 more source

Modelling unsignalised traffic flow with reference to urban and interurban networks [PDF]

open access: yes, 2003
A new variant of cellular automata (CA) models is proposed, based on Minimum Acceptable Space (MAP) rules, to study unsignalised traffic flow at two-way stop-controlled (TWSC) intersections and roundabouts in urban and interurban networks ...
Wang, Ruili
core   +2 more sources

Traffic Reorganisation in Large Roundabouts of Vilnius and its Influence on Traffic Safety

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2020
Historically, there are several large roundabouts in Vilnius with traffic organisation and safety problems. Vilnius City Administration initiated changes on these large roundabouts in 2016, by introducing new traffic organisation schemes and using ...
Vytautas Grigonis   +2 more
doaj   +1 more source

Combined Phase Design Model for Multileg Roundabout Intersections

open access: yesJournal of Advanced Transportation, 2022
Multileg roundabout intersections are widely used in urban areas worldwide. However, its traffic organization and signal control are very complicated in the case of large traffic flow, and the signal optimization methods for conventional intersections ...
Chengyuan Mao   +5 more
doaj   +1 more source

Study of vehicle speed in the design of roundabouts

open access: yesGrađevinar, 2014
Some roundabout design elements significantly influence the vehicle driving speed, i.e. the trajectory of vehicles at roundabouts, which is directly responsible for the level of service and traffic safety at roundabouts.
Hrvoje Pilko   +2 more
doaj   +1 more source

A Roundabout Way to Cancer [PDF]

open access: yes, 2012
The Slit family of secreted proteins and their transmembrane receptor, Robo, were originally identified in the nervous system where they function as axon guidance cues and branching factors during development. Since their discovery, a great number of additional roles have been attributed to Slit/Robo signaling, including regulating the critical ...
Mimmi S, Ballard, Lindsay, Hinck
openaire   +2 more sources

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