Geometric factors influencing entry capacity of roundabouts under heterogeneous traffic conditions

• Autorzy: Zacharia Arun Baby , Madhavan Harikrishna , Anjaneyulu M. V. L. R.

Identyfikatory

DOI

10.5604/01.3001.0013.2778

• Języki publikacji: EN

Abstrakty

EN

Roundabout entry capacity is influenced by geometric features of the roundabout, traffic flow characteristics, vehicle are checked. In comparison with the existing empirical models such as the LR942 regression model and German empirical model, the proposed regression model produced better estimates and much lower RMSE values. Approach width is found to have the highest impact on entry capacity. The entry capacity is found to be negatively influenced by entry angle. Circulating flow is considered in terms of per metre width against the usual convention. This modification incorporates the effect of circulatory roadway width also into consideration. The circulatory roadway width has a diverse effect on entry capacity at different levels of circulating flow. Modification of inscribed circle diameter and circulatory roadway width is suggested as a potential solution for improving entry capacity. Sensitivity analysis is carried out to quantify the effect of variation of entry angle, circulatory roadway width, inscribed circle diameter and approach width on entry capacity based on the non-linear model. The sensitivity plots can be used to make subtle geometric modifications to improve capacity at congested roundabouts.

Słowa kluczowe

EN

roundabout; entry capacity; geometry; heterogeneous traffic; traffic conditions; regression

PL

rondo; najazd; geometria ronda; ruch heterogeniczny; warunki drogowe

• Wydawca: Warsaw University of Technology, Faculty of Transport
• Czasopismo: Archives of Transport
• Rocznik: 2019
• Tom: Vol. 49, iss. 1
• Strony: 87--101
• Opis fizyczny: Bibliogr. 41 poz., rys., tab., wykr., wzory

Twórcy

autor

Zacharia Arun Baby

• National Institute of Technology Calicut, Department of Civil Engineering, Kerala, India

autor

Madhavan Harikrishna

• National Institute of Technology Calicut, Department of Civil Engineering, Kerala, India

autor

Anjaneyulu M. V. L. R.

• National Institute of Technology Calicut, Department of Civil Engineering, Kerala, India

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).