Results 31 to 40 of about 5,725 (291)
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
Determinations of critical gap and follow-up time at roundabouts in Jordan
Roads and Bridges, 2019 Critical gap and follow-up times are two important fundamental traffic parameters used in the design and operational analysis of roundabouts and un-signalized intersections.
Nabil Hazim +4 more
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
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
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
Moving from Conventional Roundabouts to Turbo-roundabouts
Procedia - Social and Behavioral Sciences, 2014 AbstractThis paper introduces the turbo-roundabout concept and compares its performance with the conventional double-lane roundabout in terms of safety and capacity. While researchers agree as to the safety benefits of turbo-roundabouts, improvement in terms of capacity is still open to discussion. The application of a new calculation method shows that
Silva, Ana Bastos +2 more
openaire +1 more source
Video-Analysis of Conflict Situations on Selected Roundabouts in the Czech Republic
, 2011 The paper deals with video-analysis of conflict situations in road traffic and presents results of researches which were performed on selected roundabouts in the Czech Republic.
Vladislav Krivda
core +1 more source
Artificial molecular machines and motors—Design and control of nanoscale motion
FEBS Letters, EarlyView.Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley +1 more source