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COMPARISON OF SELECTED CAPACITY CALCULATIONS FOR ROUNDABOUTS
Abstract
The paper deals with comparison of selected capacity calculations for roundabouts used in the Czech Republic. Some traffic engineers use the qualitative methods based on Germany methodology HBS, but some ones still use the quantitative methods for capacity assessment of roundabouts. The quantitative methods are based on the traffic volumes on entries and circulatory roadway of roundabout and they usually use an array of coefficients which represent next roundabout parameters. The qualitative methods are also based on the traffic volumes on entries and circulatory roadway of roundabout and they minutely deal with numbers of traffic lanes, time spaces and mainly average delay times (e.g. critical gap and follow-time) and level of service for entries. The method used in the Czech Republic also deals with the capacity of the exits, including influence of pedestrians on pedestrian crossings and volume/capacity ratio for exits. Attention is also paid to the other types of roundabouts, i.e. not only single-lane and double-lane roundabouts, but also mini and turbo roundabouts. This paper presents the results of calculations by both types of methods for various types of roundabouts and shows the differences used methods.
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References11
HCM2010 Highway Capacity Manual, Washington, D.C.: Transportation Research Board, 2010, ISBN 978-0-309-16077-3.
HBS Handbuch für die Bemessung von Straßenverkehrsanlagen (in German), Köln: FGSV Verlag, 2005, ISBN 3-937356-44-4.
CSN 73 6102 Design of Intersections on Highways. Czech Office for Standards, Metrology and Testing, Czech Republic, 2012. [in Czech]
Decky M., Trojanova M., Remek L., Jaty L., Noise Polution from Roundabout Traffic in the Outer Environment of Built-Up Areas of Towns, 12th International Multidisciplinary Scientific GeoConference and EXPO - Modern Management of Mine Producing, Geology and Environmental Protection SGEM, Bulgaria, pp 927-934, 2012.
Design of Roundabouts on Roads TP 135 (technical conditions), 2005. [in Czech]
Capacity Assessment of Roundabouts TP 234 (technical conditions), 2011. ISBN 978-80-87394-02-01. [in Czech]
Krivda V., Petru J., Proposal of Capacity Calculation of Roundabout Departure with Cycle Traffic in Conditions of the Czech Republic. 17th International Multidisciplinary Scientific GeoConference, SGEM 2017: Geoinformatics, Albena, Bulgaria, Vol. 17, Iss. 62, 2017, pp 721-728. DOI: 10.5593/sgem2017/62/S27.092
TRALYS transport analysis [on-line]. Internet applications for traffic engineering calculations. http://tralys.cz/ [in Czech]
Capacity Assessment of Uncontrolled Intersection TP 188 (technical conditions), 2007. ISBN 978-80-902527-6-9. [in Czech]
Capacity Assessment of Intersections and Roads (upcoming technical conditions). [in Czech]
Gavulova A., Drliciak M., 2013 Capacity Evaluation of Roundabouts in Slovakia, Transport and Telecommunication, issue 13, pp 1-10, 2013.
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