Results 91 to 100 of about 5,733 (291)

Basic Turbo Roundabouts as an Alternative to Conventional Double-lane Roundabouts: Operational Performance Evaluation [PDF]

, 2019
Conventional roundabouts have been prevalent worldwide since the emergence of modern roundabouts in 1966. An innovative design of multilane roundabouts known as turbo roundabouts, however, has been recently introduced as an alternative to conventional ...
Elhassy, Zuhair
core  

Modern Roundabouts: More Than Just an Intersection [PDF]

, 2012
This session includes updates on all that\u27s new about roundabouts. We will cover the update to the FHWA Publication Roundabouts: An Informational Guide (NCHRP 672) and emerging roundabout issues such as multi-lane roundabouts, mini roundabouts ...
Engstrom, Dave
core   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

Development of safety performance measures for different crashes severity at urban roundabouts

Results in Engineering
Roundabouts are widely utilized due to their perceived safety benefits compared to other unsignalized intersections. Studies have demonstrated that roundabouts are effective in reducing the frequency and severity of traffic crashes.
Taqwa I. Alhadidi, Mohammad Nour Al-Marafi, Asma Alazimi   +2 more
doaj   +1 more source

Two‐Step Thermal Upcycling of Flexible Printed Circuit Board Waste Into Metallic Copper Nanoparticles: Synthesis and Characterization

Advanced Materials Technologies, EarlyView.
A two‐step thermal upcycling process converts flexible printed circuit board waste into high‐purity copper nanoparticles using polymer degradation and arc discharge. The synthesized nanoparticles exhibit controlled morphology and high metal purity.
Bikesh S. Ghinangju, Rumana Hossain, Veena Sahajwalla   +2 more
wiley   +1 more source

Safety Effectiveness of Converting Conventional Intersections to Roundabouts: Case Study in the City of Niš

Promet (Zagreb), 2016
Intersections present a big safety problem in traffic since there has been an increased risk of crashes because of conflicts in the flows intersecting.
Milan Vujanić, Milan Savićević, Boris Antić, Dalibor Pešić   +3 more
doaj   +1 more source

The Implications of Converting a High-Volume Multilane Roundabout into a Turbo Roundabout

Journal of Advanced Transportation, 2020
With the growing number of vehicles utilizing roads in the city of Doha, Qatar, most intersections, particularly multilane roundabouts, have been facing traffic congestion dilemma, where traffic demand exceeds capacity.
Zuhair Elhassy, Hatem Abou-Senna, Khaled Shaaban, Essam Radwan   +3 more
doaj   +1 more source

Examination of the geometric design parameters contributing to heavy vehicle stability and rollover effects at roundabouts in high-speed areas [PDF]

Roundabouts in rural locations typically have high approach speeds and are often criticised for catastrophic incidents. This report reviews the literature on heavy vehicle rollovers at roundabouts, covering the most frequently cited papers.
Arndt, Owen, Somasundaraswaran, Kathirgamalingam   +1 more
core   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

Advanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang, J. An, X. Zheng, D. Wang, S. Wang, X. Wang, P. Zhu, J. Pei, S. Li, J. Paripurana, Y. Han, Z. Tang, X. Gan, Q. He, X. Ma   +14 more
wiley   +1 more source

Determinants of crash numbers and constellations at turbo roundabouts in Germany

Traffic Safety Research
Turbo roundabouts are a relatively new design. Thus far, research on their safety has focused on comparisons with other types of intersection and the effects of physical lane dividers.
Armin Kollascheck, Martin Bärwolff, Julian Schmitz, Justin Geistefeldt, Sebastian Hantschel, Regine Gerike   +5 more
doaj   +1 more source