Results 11 to 20 of about 6,503 (261)

Analyzing the relationship between the efficiency and safety of a turbo roundabout by the factor analysis method [PDF]

open access: yesHeliyon
The construction of cities and economic development lead to more and more serious environmental pollution, and the concept of green and low-carbon city has been proposed. Therefore, a series of requirements have been put forward for transportation.
Qinghua He   +7 more
doaj   +2 more sources

Barite as an industrial mineral in Nigeria: occurrence, utilization, challenges and future prospects

open access: yesHeliyon, 2021
Barite is a non-metallic mineral which is simply barium sulfate (BaSO4) and is largely used by the oil and gas industry as a weighting agent in drilling mud during drilling operations.
Abraham Ighoro Ebunu   +4 more
doaj   +1 more source

ANALYSIS OF SUN GLARE ON ROUNDABOUTS WITH AERIAL LASER SCANNING DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Road geometry and sun glares play an important role concerning road safety. In this research, the direct sunlight in a roundabout sited in Ávila (Spain) is analysed using Aerial Laser Scanning (ALS) point clouds.
S. M. González-Collazo   +3 more
doaj   +1 more source

Comparison of Single-Lane Roundabout Entry Degree of Saturation Estimations from Analytical and Regression Models

open access: yesAlgorithms, 2023
Roundabout design is an iterative process consisting of a preliminary geometry design, geometry performance checks, and the estimation of intersection functionality (based on the results of analytical or regression models). Since both roundabout geometry
Ana Čudina Ivančev   +3 more
doaj   +1 more source

Performance Evaluation of a Hybrid Roundabout Using a Microscopic Simulation

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2021
Roundabouts are one of the safest types of intersections. There are a number of roundabout types in literature. Each roundabout type is distinguished by some characteristics.
Yavuz User   +2 more
doaj   +1 more source

Geometric Design of Suburban Roundabouts

open access: yesEncyclopedia, 2021
A modern roundabout is an intersection with a circulatory roadway at which the vehicle speed is low, and the traffic is continuous and circulating in one direction around the central island towards the exits at the approach legs. Modern roundabout design
Saša Ahac, Vesna Dragčević
doaj   +1 more source

Bi-Level Coordinated Merging of Connected and Automated Vehicles at Roundabouts

open access: yesSensors, 2021
Traditional uncoordinated traffic flows in a roundabout can lead to severe traffic congestion, travel delay, and the increased fuel consumption of vehicles.
A. S. M. Bakibillah   +5 more
doaj   +1 more source

The magic roundabout [PDF]

open access: yesBMJ, 2006
It is 2015, and what goes around has come around several times in the past 10 years. Back in 2005, Zebedee, or whoever it was who spun the magic roundabout from the Department of Health, seemed confused about the difference between change and progress. Change produced instant good-news stories but constant disruption within the health service. Progress
openaire   +2 more sources

‘Fix Crash Corner’ – a Roundabout Story

open access: yesJournal of Road Safety, 2022
In 2020, a new roundabout was constructed at the intersection of Church and Victoria Streets, Auckland, New Zealand. It replaced a ‘Stop’ controlled cross-roads junction with adverse crash history, nicknamed ‘crash corner’ by locals, having 54 crashes ...
Bruno Royce
doaj   +1 more source

A Speed Optimization Strategy for Smooth Merging of Connected and Automated Vehicles at T-Shape Roundabout

open access: yesIEEE Access, 2022
This paper establishes a novel holistic T-shape roundabout coordination system (TCS) that addresses the connected and automated vehicles (CAVs) flow at a typically isolated T-shape roundabout.
Khurrum Jalil   +3 more
doaj   +1 more source

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