Results 11 to 20 of about 14,477 (290)

New Type of Roundabout: Roundabout with “Depressed” Lanes for Right Turning – “Flower Roundabout” [PDF]

open access: yesPromet (Zagreb), 2011
Recently, many of the foreign traffic-safety analyses point out the low level of traffic safety in multi-lane roundabouts. This problem is resolved in several ways in different countries; however, the solution, whereby the number of conflict points is ...
Tomaž Tollazzi   +2 more
doaj   +4 more sources

A computer simulation study of the effects of flaring and turning movements on roundabout entry performance. [PDF]

open access: yes, 1982
This thesis reports on an investigation carried out to study the effect of flaring and turning movements on the performance of roundabout entries. A computer simulation program was developed to carry out the investigation.
Natsinas, Theodoros
core   +6 more sources

ROUNDABOUT.

open access: yes, 1912
Patent for a roundabout ride with an improved method of turning the seats and the seat ...
LUSSE ROBERT, LUSSE JOSEPH
openaire   +2 more sources

Multi-criteria comparative assessment of unconventional roundabout designs

open access: yesInternational Journal of Transportation Science and Technology, 2022
Roundabout design has been evolving to include versatile types that target specific characteristics of each considered location. They started addressing maneuverability issues and directional splits, among other factors.
Abdul Razak Alozi, Mohamed Hussein
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

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

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

‘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

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