FASTEST PATH VEHICLE SPEED ANALYSIS AT STANDARD TURBOROUNDABOUTS WITH VARIOUS APPROACH LEG POSITIONS

In previous studies, a new (improved) turboroundabout design approach based on the rules of the design vehicle movement geometry was proposed, and the optimal design of elements of standard turboroundabouts for various design vehicle scenarios, circulatory roadway radii, and approach leg positions w...

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Main Authors: Tamara Džambas, Vesna Dragčević
Format: Article
Language:English
Published: Faculty of Civil Engineering Osijek 2022-01-01
Series:e-GFOS
Subjects:
Online Access:http://e-gfos.gfos.hr/egfos/egfospdf/23589
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author Tamara Džambas
Vesna Dragčević
author_facet Tamara Džambas
Vesna Dragčević
author_sort Tamara Džambas
collection DOAJ
description In previous studies, a new (improved) turboroundabout design approach based on the rules of the design vehicle movement geometry was proposed, and the optimal design of elements of standard turboroundabouts for various design vehicle scenarios, circulatory roadway radii, and approach leg positions was defined. Within the scope of this research, the applicability of the current Dutch calculation model for fastest-path vehicle speed analyses at standard turboroundabout schemes designed by a previously described procedure was examined. Research results have shown that this Dutch calculation model does not apply to standard turboroundabouts whose approach legs are aligned under various angles and translatory shifted regarding the roundabout geometric center, and therefore, should not be used for speed analyses at this roundabout type until a new calculation model, which corresponds to the real traffic situation, is developed.
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spelling doaj.art-4ba6781f2c8b4996b2a91f8e09e690002022-12-22T03:38:33ZengFaculty of Civil Engineering Osijeke-GFOS1847-89482022-01-011324111https://doi.org/10.13167/2022.24.1207FASTEST PATH VEHICLE SPEED ANALYSIS AT STANDARD TURBOROUNDABOUTS WITH VARIOUS APPROACH LEG POSITIONSTamara Džambas0Vesna Dragčević1University of Zagreb, Faculty of Civil Engineering, CroatiaUniversity of Zagreb, Faculty of Civil Engineering, CroatiaIn previous studies, a new (improved) turboroundabout design approach based on the rules of the design vehicle movement geometry was proposed, and the optimal design of elements of standard turboroundabouts for various design vehicle scenarios, circulatory roadway radii, and approach leg positions was defined. Within the scope of this research, the applicability of the current Dutch calculation model for fastest-path vehicle speed analyses at standard turboroundabout schemes designed by a previously described procedure was examined. Research results have shown that this Dutch calculation model does not apply to standard turboroundabouts whose approach legs are aligned under various angles and translatory shifted regarding the roundabout geometric center, and therefore, should not be used for speed analyses at this roundabout type until a new calculation model, which corresponds to the real traffic situation, is developed.http://e-gfos.gfos.hr/egfos/egfospdf/23589standard turboroundaboutsvehicle movement geometryfastest pathspeed analysisdutch calculation model
spellingShingle Tamara Džambas
Vesna Dragčević
FASTEST PATH VEHICLE SPEED ANALYSIS AT STANDARD TURBOROUNDABOUTS WITH VARIOUS APPROACH LEG POSITIONS
e-GFOS
standard turboroundabouts
vehicle movement geometry
fastest path
speed analysis
dutch calculation model
title FASTEST PATH VEHICLE SPEED ANALYSIS AT STANDARD TURBOROUNDABOUTS WITH VARIOUS APPROACH LEG POSITIONS
title_full FASTEST PATH VEHICLE SPEED ANALYSIS AT STANDARD TURBOROUNDABOUTS WITH VARIOUS APPROACH LEG POSITIONS
title_fullStr FASTEST PATH VEHICLE SPEED ANALYSIS AT STANDARD TURBOROUNDABOUTS WITH VARIOUS APPROACH LEG POSITIONS
title_full_unstemmed FASTEST PATH VEHICLE SPEED ANALYSIS AT STANDARD TURBOROUNDABOUTS WITH VARIOUS APPROACH LEG POSITIONS
title_short FASTEST PATH VEHICLE SPEED ANALYSIS AT STANDARD TURBOROUNDABOUTS WITH VARIOUS APPROACH LEG POSITIONS
title_sort fastest path vehicle speed analysis at standard turboroundabouts with various approach leg positions
topic standard turboroundabouts
vehicle movement geometry
fastest path
speed analysis
dutch calculation model
url http://e-gfos.gfos.hr/egfos/egfospdf/23589
work_keys_str_mv AT tamaradzambas fastestpathvehiclespeedanalysisatstandardturboroundaboutswithvariousapproachlegpositions
AT vesnadragcevic fastestpathvehiclespeedanalysisatstandardturboroundaboutswithvariousapproachlegpositions