Vehicle Speed Impact on the Design of Efficient Urban Single-Lane Roundabouts

  • Hrvoje PilkoEmail author
  • Šime Šarić
Conference paper
Part of the Lecture Notes in Networks and Systems book series (LNNS, volume 21)


Implementing effective roundabouts in urban areas is a highly demanding task and requires optimizing traffic (operational) efficiency (TE) and traffic safety (TS) while considering geometric factors, traffic characteristics and local constraints. To capture a relationship between roundabout design elements, traffic demand flow and vehicle path speed through the roundabout, we studied American and Australian method on four urban single-lane roundabouts located in the Croatian capital of Zagreb. Comparison between design speed and measured vehicle speed show bigger deviations than previous studies. Preliminary validation of the used methods enables better understanding of its application for Croatian conditions. These preliminary results suggest that the used methods can capture the correlation between geometry, traffic flow demand and vehicle speed of urban single-lane roundabouts but with needed calibration for local conditions.


Urban single-lane roundabout Geometry design Traffic (operational) efficiency Traffic safety Vehicle movement trajectory Vehicle speed 



The research described in this paper was conducted within the scope of the research project “Correlation between Design and Safety at Roundabouts” (135-0000000-3313), funded by the Ministry of Science, Education and Sports of the Republic of Croatia. The in situ studies and data analysis was conducted by the student Šime Šarić within the scope of his master thesis “A Study of the Impact of Roundabouts on Functional Efficiency of Intersections and Business” at University of Zagreb, Faculty of Transport and Traffic Safety, Croatia.


  1. 1.
    Vasconcelos, A., Seco, A., Silva, A.: Comparison of procedures to estimate critical headways at roundabouts. Promet 25, 43–53 (2013)Google Scholar
  2. 2.
    Mauro, R., Cattani, M.: Functional and economic evaluations for choosing road intersection layout. Promet 24, 441–448 (2012)CrossRefGoogle Scholar
  3. 3.
    Kim, S., Choi, J.: Safety analysis of roundabout designs based on geometric and speed characteristics. J. Civ. Eng. 17, 1446–1454 (2013)Google Scholar
  4. 4.
    Rubio-Martín, J.L., Jurado-Piña, R., Pardillo-Mayora, J.M.: Heuristic procedure for the optimization of speed consistency in the geometric design of single-lane roundabouts. Can. J. Civ. Eng. 42, 13–21 (2015)CrossRefGoogle Scholar
  5. 5.
    Vujanić, M., Savićević, M., Antić, B., Pešić, D.: Safety effectiveness of converting conventional intersections to roundabouts: case study in the city of Niš. Promet 28, 529–537 (2016)Google Scholar
  6. 6.
    Macioszek, E.: Geometrical determinants of car equivalents for heavy vehicles crossing circular intersections. In: Mikulski, J. (ed.) Telematics in the Transport Environment. CCIS, vol. 329, pp. 221–228. Springer, Heidelberg (2012)CrossRefGoogle Scholar
  7. 7.
    Zirkel, B., Park, S., McFadden, J., Angelastro, M., McFarthy, L.: Analysis of sight distance, crash rate and operating speed relationships for low-volume single lane roundabouts in the United States. J. Transp. Eng. 139, 565–573 (2013)CrossRefGoogle Scholar
  8. 8.
    Quddus, M., Washington, S.: Shortest path and vehicle trajectory aided map-matching for low frequency GPS data. Transp. Res. Part C 55, 328–339 (2015)CrossRefGoogle Scholar
  9. 9.
    Deluka-Tibljaš, A., et al.: Smjernice za Projektiranje Kružnih Raskrižja na Državnim Cestama. University of Rijeka, Faculty of Civil Engineering, Rijeka (2014)Google Scholar
  10. 10.
    BiH, Direkcija Cesta Federacije: Javno Preduzeće Putevi Republike Srpske: Smjernice za Projektovanje, Građenje. Održavanje i Nadzor nad Putevima. Knjiga I. Direkcija Cesta Federacije BiH, Sarajevo/Banja Luka (2005)Google Scholar
  11. 11.
    Ministarstvo za Infrastrukturo in Prostor DRS za Ceste: Krožna Križišča. Ministarstvo za Infrastrukturo, Ljubljana (2011)Google Scholar
  12. 12.
    FGSV: Handbuch für die Bemessung von Strassenverkehrsanlagen: HBS 2015. FGSV, Köln (2015)Google Scholar
  13. 13.
    Generalna Dyrekcja Dróg Publicznych: Wytyczne Projektowania Skrzyżowań Drogowych. Część II – Ronda. GDDP, Warszawa (2001)Google Scholar
  14. 14.
    Pilko, H., Brčić, D., Šubić, N.: Study of vehicle speed in the design of roundabouts. Građevinar 66, 407–416 (2014)Google Scholar
  15. 15.
    Pilko, H.: Optimization of Roundabout Design and Safety Component. University of Zagreb, Zagreb (2014)Google Scholar
  16. 16.
    Transportation Research Board: NCHRP Report 672. National Cooperative Highway Research Program. Roundabouts: An Informational Guide. Transportation Research Board, Washington (2010)Google Scholar
  17. 17.
    Easa, S.M., Mehmood, A.: Optimizing geometric design of single-lane roundabouts: consistency analysis. Can. J. Civ. Eng. 31, 1024–1038 (2004)CrossRefGoogle Scholar
  18. 18.
    Legac, I., et al.: Korelacija Oblikovnosti i Sigurnosti u Raskrižjima s Kružnim Tokom Prometa. Ministry of Science, Education and Sports, Zagreb (2008)Google Scholar
  19. 19.
    Sabor, Hrvatski: Pravilnik o Tehničkim Uvjetima Vozila u Prometu na Cestama, NN 85/2016. Hrvatski Sabor, Zagreb (2016)Google Scholar
  20. 20.
    Macioszek, E.: Analysis of significance of differences between psychotechnical parameters for drivers at the entries to one-lane and turbo roundabouts in poland. In: Sierpiński, G. (ed.) Intelligent Transport Systems and Travel Behaviour. AISC, vol. 505, pp. 149–161. Springer, Switzerland (2017)CrossRefGoogle Scholar
  21. 21.
    Džambas, T., Ahac, S., Dragčević, V.: Design of turbo roundabouts based on the rules of vehicle movement geometry. J. Transp. Eng. 143, 1–10 (2016)Google Scholar
  22. 22.
    Hatami, H., Aghayan, I.: Traffic efficiency evaluation of elliptical roundabout compared with modern and turbo roundabouts considering traffic signal control. Promet 29, 1–11 (2017)CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.Faculty of Transport and Traffic SciencesUniversity of ZagrebZagrebCroatia

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