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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4848
Title: Gap acceptance behavior and vehicle speed on roundabouts: Case study in India
Authors: Akhtar M.W.
Ahmad A.
Rastogi, Rajat
Published in: European Transport - Trasporti Europei
Abstract: Roundabouts perform better than other types of uncontrolled intersections when traffic flow is low to medium. Research works on roundabouts have proposed different methods to estimate the entry capacity of an approach leg. One such approach is based on gap acceptance behavior of the entering vehicles. This approach requires estimation of critical gap using gaps accepted and rejected by entering vehicles and measurement of follow-up time. This paper discusses the gap acceptance behavior and vehicle speeds on roundabouts under heterogeneous traffic condition. Gaps accepted and rejected by entering vehicle have been extracted by vehicle type. These are used to estimate critical gap by using maximum likelihood method. The maximum likelihood method is reported to have better efficiency and accuracy above other methods of critical gap estimation. The circulating flow has been counted for every 10 minutes interval and is correlated with critical gap and followup time. Similarly, speed at entry of an approach and in the circulating area of the roundabout is also estimated and correlated. ¬© 2018 Institute for Transport Studies in the European Economic Integration. All Rights Reserved.
Citation: European Transport - Trasporti Europei(2018), (68): -
URI: http://repository.iitr.ac.in/handle/123456789/4848
Issue Date: 2018
Publisher: Institute for Transport Studies in the European Economic Integration
Keywords: Critical gap
Follow-up time
Roundabout
Speed
ISSN: 18253997
Author Scopus IDs: 57202708400
56985078000
7202416770
Author Affiliations: Akhtar, M.W., Department of Civil Engineering, Indian Institute of Technology, Roorkee, India
Ahmad, A., Department of Civil Engineering, ZHCET, AMU, Aligarh, India
Rastogi, R., Department of Civil Engineering, Indian Institute of Technology, Roorkee, India
Corresponding Author: Ahmad, A.; Department of Civil Engineering, ZHCET, AMUIndia; email: abd.zubairi@gmail.com
Appears in Collections:Journal Publications [CE]

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