Analyses of maximum-speed path definition at single-lane roundabouts

Šurdonja, Sanja; Dragčević, Vesna; Deluka-Tibljaš, Aleksandra

doi:10.1016/j.jtte.2017.06.006

Cited by 10 publications

(11 citation statements)

References 12 publications

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“…According to [2], roundabouts have been used for years to reduce traffic hazards [3][4][5] and to ensure a proper capacity [6]. In the most frequently applied models of roundabout design, such as the Dutch (Dutch Information and Technology Platform, CROW model) and American models (FHWA, Federal Highway Administration model) [2], it is important that a vehicle's turn through a roundabout consists of several interconnected radii. Turning radius, computed based on methods presented in relevant research, is developed with reference to the parameters of roundabout design.…”

Section: Literature Reviewmentioning

confidence: 99%

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Calculation of an Average Vehicle’s Sideways Acceleration on Small Roundabouts

Jagelčák

Gnap

Kostrzewski

et al. 2022

Sensors

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The calculation of the average sideways acceleration, based on speed and angular velocity on small roundabouts for a vehicle of up to 3.5 t gross vehicle mass, is described in this paper. Calculations of the turning radius are derived from angular velocity and an automatic selection of events, based on the lateral acceleration of the coefficient of variation within a defined time window. The calculation of the turning radius based on speed and angular velocity yields almost identical results to the calculation of the turning radius by the three-point method using GPS coordinates, as described in previous research. This means that the calculation of the turning radius, derived from the speed of GNSS/INS dual-antenna sensor and gyroscope data, yields similar results to those from the computation of the turning radius derived from the coordinates of a GNSS/INS dual-antenna sensor. The research results can be used in the development of sensors to improve road safety.

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Section: Literature Reviewmentioning

confidence: 99%

“…The authors of [2] investigated maximum speed definition on single-lane roundabouts. They applied a precise GNSS (global movement navigation trajectory satellite in an urban system) device to obtain data during rides.…”

Section: Literature Reviewmentioning

confidence: 99%

Calculation of an Average Vehicle’s Sideways Acceleration on Small Roundabouts

Jagelčák

Gnap

Kostrzewski

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…Experimental vehicle-path tests shown in [13] were conducted to determine applicability of the existing manners of defining the vehicle path in local conditions at roundabouts designed according to Croatian guidelines [6]. The paper presents results obtained at two roundabouts in Croatia ( Figure 6).…”

Section: Experimental Testing Of Vehicle Pathmentioning

confidence: 99%

“…In addition, the recommended distances, based on which vehicle paths used in speed calculations are formed, differ significantly from the distances determined in field studies. This particularly applies to the central part of vehicle path in roundabouts [13]. The actual vehicle path through roundabouts should therefore be determined with greater accuracy, which would in turn enable a more accurate calculation of transit speeds.…”

Section: Introductionmentioning

confidence: 99%

Model of vehicle path radius at roundabout centre

Šurdonja¹,

Dragčević²,

Deluka-Tibljaš³

et al. 2019

JCE

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Model of vehicle path radius at roundabout centre Field investigations of real-life vehicle paths at single lane rural roundabouts, conducted on a sample of 22 straight directions through roundabouts of varying properties, are presented in this paper. Statistically significant correlations of some roundabout elements and vehicle path radii at roundabout centre were determined and used as a basis for developing a model of vehicle path radius at roundabout centre, for the case of vehicles moving straight through the roundabout.

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“…Šurdonja et al [5] recently gave a detailed analysis of the most frequently applied mathematical methods comparing their results to measurements of several benchmark roundabouts. In [6] Akcelik summarized the optimal (negotiating) speed values in table as a function of the diameter of the central circle and the lane-widths and introduced a geometric delay model that considers also the ratio of the stopped and non-stopped vehicles at the approaching roads.…”

Section: Introductionmentioning

confidence: 99%

Computer simulation of roundabouts

Kovács¹

2020

Gradus

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Inthe last decades numerous traffic lamp controlled intersectionshave beenchanged to roundabouts on Hungarian traffic roads, hoping that this helps diminish the usual traffic jams in these traffic contexts.The most characteristic parameter of a roundabout is the capacity that is the number of vehicles can pass through the intersection in 1 hour. The capacity calculation of the new roundabouts, beyond a formula basedcalculation, often involves computer simulation as well, so as to get more reliable results. In the present paper we introduce a development of our traffic simulator so that it is able to determine the capacitiesof a roundabout. The simulation is tested by capacity calculation of a real roundabout and the dependency of the capacity on some key parameters is examined as well.

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Analyses of maximum-speed path definition at single-lane roundabouts

Cited by 10 publications

References 12 publications

Calculation of an Average Vehicle’s Sideways Acceleration on Small Roundabouts

Calculation of an Average Vehicle’s Sideways Acceleration on Small Roundabouts

Model of vehicle path radius at roundabout centre

Computer simulation of roundabouts

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