Results 21 to 30 of about 809 (160)
Assessment of vehicle emissions at roundabouts: a comparative study of PEMS data and microscale emission model [PDF]
Archives of Transport, 2022 Energy efficiency has a central role to play in achieving decarbonisation targets in the transport system by changing the demand for mobility (eg. by influencing on peoples behaviors) and improving the performance of the fleet.
Maksymilian Mądziel, Tiziana Campisi
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Conversion of a Semi-two Lanes Roundabout into a Turbo-roundabout: A Performance Comparison
Procedia Computer Science, 2016 AbstractIn the last years, as regards the functional design of at-grade intersections, near to classic layouts (signal-controlled junctions, roundabouts, etc.) a new solution has born: the “turbo-roundabout”. It is a canalized multilane oval intersection with a non-traversable or partially traversable center island and with a spiral circulatory ...
Vincenzo Gallelli +2 more
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Effect of vehicle composition and delay on roundabout capacity under mixed traffic conditions [PDF]
Archives of Transport, 2016 Roundabouts are replacing conventional unsignalized intersections in many parts of the world (Polus and Shmueli, 1997). Capacity estimation is necessary for designing a new roundabout, to analyze and improve the existing roundabout facilities.
Dodappaneni Abhigna +2 more
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Capacity Limits of Basic Turbo-Roundabouts
Communications, 2016 Turbo-roundabouts with their specific design characteristics have become a suitable solution of a single-lane roundabouts capacity problem and a standard two-lane roundabouts safety problem.
Andrea Kocianova
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Two Stop-Line Method for Modern T-Shape Roundabout: Evaluation of Capacity and Optimal Signal Cycle
Journal of Advanced Transportation, 2022 Uncoordinated traffic flows at the traditional roundabouts, especially with a small circumference and fewer lanes, are often heavily affected by congestion, which escalates fuel consumption, CO2 emissions, idling, and travel delay.
Khurrum Jalil +3 more
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Traffic Circulation Efficiency of Elliptical Roundabouts
ARO-The Scientific Journal of Koya University, 2023 This paper investigates the impact of geometry of central island of roundabout on operational performance in terms of delay and capacity measures. A roundabout with an elliptical central island having major and minor axes of 63 and 44m respectively was ...
Hardi S. Fathullah +5 more
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Interaction between motor vehicles and bicycles at two-lane roundabouts: a driving volatility-based analysis [PDF]
International Journal of Injury Control and Safety Promotion, 2019 Drivers' instantaneous decisions regarding speed and acceleration/deceleration, as well as the time rate of acceleration change (jerk) can result in a volatility driving behaviour with significant impact on cyclist safety. The contribution of this article is the assessment of driving volatility in motor vehicle (MV)-bicycle interactions at two-lane ...
Bahmankhah, Behnam +3 more
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A simulation of traffic noise emissions at a roundabout based on a cellular automaton model
Acta Acustica, 2021 The calculation and evaluation of traffic noise is an important task in urban road design. Roundabouts are a common form of urban road intersection. The complexity of traffic operations makes the calculation of traffic noise near a roundabout challenging.
Du Canyi, Qiu Xinfa, Li Feng, Cai Ming
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Promet (Zagreb), 2017 This paper compared the performance of elliptical roundabout with turbo and modern roundabouts. It considers the effects of increasing the central island radius and speed limit on delay and capacity.
Hadi Hatami, Iman Aghayan
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Safety evaluation of urban roundabouts in India: a safety performance function-based approach
Traffic Safety Research, 2022 There is a lack of comprehensive research in roundabout safety under non-lane-based traffic conditions, mainly due to the absence of relevant crash data and effective tools for safety evaluation.
V S Vinayaraj, Vedagiri Perumal
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