Results 21 to 30 of about 1,473 (259)
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
Study of vehicle speed in the design of roundabouts
Građevinar, 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]
, 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
Applied SciencesThis study investigated and compared driver behaviors at signalized and non-signalized roundabouts in Qatar, focusing on turn signal usage, lane change behavior, and correct lane usage.
Mohammed Abul Fahed +2 more
doaj +1 more source
Turbo Design as a Countermeasure for Traffic Safety and Operation at Roundabouts
Journal of Engineering and Sustainable DevelopmentTurbo roundabouts have recently been developed in various nations due to their numerous benefits. The paper assesses the safety and efficiency of turbo roundabouts. Replacement is done without damaging private property.
Noor Jabbar Jihad +2 more
doaj +1 more source
Are Double-Lane Roundabouts Safe Enough? A CHAID Analysis of Unsafe Driving Behaviors
Safety, 2021 This study investigated the nature and causes of unsafe driving behavior at roundabouts through an on-road study. Four urban double-lane roundabouts with different layouts were selected for an on-road study.
Giulia Pulvirenti +3 more
doaj +1 more source
A Roundabout Way to the Niche [PDF]
Cell Stem Cell, 2011 A new player in hematopoietic stem cell (HSC)-niche interactions is introduced in this issue of Cell Stem Cell. Smith-Berdan et al. (2010) demonstrate that Robo4 is involved in HSC engraftment and mobilization and does so in cooperation with Cxcr4 to guide stem cells to and secure them in the niche.
openaire +2 more sources
Predicting Operating Speeds at Urban Multilane Roundabouts in Abu Dhabi, United Arab Emirates
Journal of Advanced Transportation, 2018 There are more than 460 multilane roundabouts located in Abu Dhabi, the capital city of the United Arab Emirates, and its surrounding areas. Most of those roundabouts have three entry/circulatory/exit lanes with large radii, which resulted in the ...
Mohammad Almoarawi, Essam Dabbour
doaj +1 more source
Methods of Crossing at Roundabouts for Visually Impaired Pedestrians: Review of Literature
International Journal of Transportation Science and Technology, 2015 Because roundabouts offer so many beneficial features to a community, it is important that they are made as safe as possible for all users and comply with the Americans with Disabilities Act Accessibility Guidelines.
Rebekka Apardian
doaj +1 more source
Modification in Hcm Delay Model for Roundabout for Mixed Traffic Conditions - a Pilot Study
Communications, 2022 Roundabouts have proven to be an effective intersection design method for smooth traffic flow movements and improved safety. Previous studies show that VISSIM, commercial traffic simulation software, can be used as a proficient tool for modeling and ...
Asir Khan +2 more
doaj +1 more source