AbstractThe paper demonstrates the influence of the multi-channelpedestrian flow on the actual capacity of a one-lane roundabout,using micro-simulation and discrete functions. The proposedmodel is based on the theory of the expected time gap betweenthe units of pedestrian traffic flow, which have the prioritywhen crossing the arm of the roundabout. The proposedmodel represents an upgrade of the previous research in thefield of modelling traffic flows in the one-lane roundabout.Apart from the multi-channel pedestrian flow the disturbancescaused by the circular traffic flow of motorised vehicles at theroundabout are also considered. In this way the model canbetter illustrate the real conditions in traffic. A simulation analysishas been performed on the roundabout arm at KoroskaStreet in Maribor. The results of the analysis have indicated arelatively high reserve of the actual throughput capacity for themain motorized traffic flow in the analysed roundabout arm.The presented model represents a practicable and adaptabletool for planning the roundabout capacity in practice and forthe sensitivity analysis of individual variables on the throughputcapacity of the roundabout.
Centre for Transportation Research & Training: Traffic
Engineering and Signals- How a roundabout works',
Kansas State University, 2007.
0. Hagring: '~further generalization of Tanner's formula
', Transportation Research Part B: Methodological,
Vol. 32 b, No.6, 1998.
N. Wu: 'A universal procedure for capacity determination
at unsignalized priority controlled intersections',
Transportation Research Part B: Methodological, Vol.
b, No. 6, 2001.
T. Oketch, M. Delsey, D. Robertson: 'Evaluation of
performance of modem roundabout using Paramics
micro-simulation model', TAC Conference 2004.
R. Ak~elik: 'Roundabout Mode/ Calibration Issues and a
Case Study', TRB National Roundabout Conference,
R. Ak~elik, M. Besley: 'Microsimulation and analytical
methods for modelling urban traffic', Conference of Advanced
Modelling Techniques and Quality of Service in
HCA, California, USA, July 2001.
R. Ak~elik: 'Operating cost, fuel consumption and pollutant emission savings at a roundabout with metering
signals', 7th Congress on Advanced in Civil Eng. (ACE
, Turkey 2006.
Brooks Automation: '~utoMod-User manual V 12.0',
Utah, Decembre 2005.
T. Tollazzi, B. Kralj, S. Destovnik: '~nalysis of the
influence of pedestrian flow on roundabout capacity by
using the simulation method', Suvremeni promet, Vol
T. Tollazzi, T. Lerher, M. Sraml: '~n analysis of the
influence of pedestrians' traffic flow on the capacity of a
roundabout using the discrete simulation method', Journal
of Mechanical Engineering, Vol. 52, 2006, pp. 359-
T. Tollazzi, T. Lerher, M. Sraml: 'Simulation of the
pedestrians' influence to the capacity of motorised vehicles
in a roundabout', American Journal of Applied
Science, Vol. 5, No.1, 2007, pp. 34-41. Elect. publication:
T. Tollazzi, T. Lerher, M. Sraml: 'The use of micro-
simulation in determining the capacity of a roundabout
with a multi-channel pedestrian flow', Journal of Mechanical
Engineering, to be published!
M. Bogataj: 'Zastoji s cakajocimi vrstami in riziko odpovedi celic aktivnosti v logisticnih verigah', FPF, Ljubljana,
J. R. Stone, K. Chae: 'Roundabouts and Pedestrian Capacity: A Simulation Analysis, Transportation Research
Board', Annual Meeting CD-ROM, 2003.
Bundesministerium fur wirtschaftliche Angelegenheiten:
'Dienstanweisung 'Einsatzbereiche und Ausbildung
von Kreisverkehrsanlagen an Bundesstrassen ', Abteilung
Centrum voor Regelgeving en Onderzoek in de
Grond-, Water- en Wegenbouw en de Verkeerstechniek:
Rotondes, publikatie 79, 1993.
R. Wiedermann, U. Reiter: 'Microscopic Traffic Simulation', The Simulation System Mission, 1970.
Fellendorf, Vortisch: 'IntegratedModellingofTransport
Demand, Route Choice, Traffic Flow and Traffic Emissions',
Dowling Associates, Inc.: 'Guidelines for Applying Traffic
Microsimulation Modelling Software', Federal Highway
Administration, August 2003.
I. Potrc, T. Lerher, J. Kramberger, M. Sraml: 'Simulation
model of multi-shuttle automated storage and retrieval
systems', Journal of material processing technology,
Vol. 157/158, 2004, pp. 236-244.