Turbo Roundabouts: A Brief Safety, Efficiency and Geometry Design Review

Conference paper
Part of the Lecture Notes in Networks and Systems book series (LNNS, volume 52)


The application popularity of various roundabout types around the world has driven substantial efforts to optimize their geometry design. Implementing effective roundabouts requires optimizing traffic safety (TS) and traffic (operational) efficiency (TE) while considering various geometry and other factors. In multi-lane roundabouts driver indecision and misunderstanding of the driving rules and situations can lead to weaving conflicts and accidents. These accidents are frequent and often affect TS and TE. The turbo roundabout concept has emerged as a possible alternative to conventional multi-lane roundabouts, aiming to improve exclusively TS. However, some studies do not allow definitive conclusions about their TE (capacity) influence. To capture a relationship between turbo roundabout design, TS and TE parameters brief overview of the latest guidelines and studies is presented here.


Turbo roundabout Traffic safety Traffic (operational) efficiency Guidelines Geometry design 



The research described in this paper was conducted within the scope of the research project Technical Review of Traffic Accident Locations with Killed Persons in the Function of Hazard Identification, funded by the Ministry of the Interior, Republic of Croatia in the scope of the National Road Safety Program 2011–2020.


  1. 1.
    Pilko, H., Mandžuka, S., Barić, D.: Urban single-lane roundabouts: a new analytical approach using multi-criteria and simultaneous multi-objective optimization of geometry design, efficiency and safety. Transp. Res. Part C Emerg. Technol. 80, 257–271 (2017)CrossRefGoogle Scholar
  2. 2.
    Hatami, H., Aghayan, I.: Traffic efficiency evaluation of elliptical roundabout compared with modern and turbo roundabouts considering traffic signal control. Promet 29(1), 1–11 (2017)CrossRefGoogle Scholar
  3. 3.
    Fernandes, P., Pereira, S.R., Bandeira, J.M., Vasconcelos, L., Silva, A.B., Coelho, M.C.: Driving around turbo-roundabouts vs. conventional roundabouts: are there advantages regarding pollutant emissions? Int. J. Sustain. Transp. 10(9), 847–860 (2016)CrossRefGoogle Scholar
  4. 4.
    Silva, A.B., Vasconcelos, L., Santos, S.: Moving from conventional roundabouts to turbo-roundabouts. Procedia - Soc. Behav. Sci. 111, 137–146 (2014)CrossRefGoogle Scholar
  5. 5.
    Fortuijn, L.G.H.: Turbo roundabouts. Transp. Res. Rec. 2130, 83–92 (2010)CrossRefGoogle Scholar
  6. 6.
    Džambas, T., Ahac, S., Dragčević, V.: Geometric design of turbo roundabouts. Teh. Vjesn. Tech. Gaz. 24, 309–318 (2017)Google Scholar
  7. 7.
    CROW: Turborotondes, Publication No. 257. CROW, Netherland (2008)Google Scholar
  8. 8.
    Ministarstvo Za Infrastrukturo in Prostor DRS Za Ceste: Krožna Križišča - TSC 03.341: 2011. Ministarstvo Za Infrastrukturo in Prostor DRS Za Ceste, Ljubljana (2011)Google Scholar
  9. 9.
    FGSV: Handbuch für die Bemessung von Strassenverkehrsanlagen. FGSV, Köln (2015)Google Scholar
  10. 10.
    Serbian Authority for Roads: Priručnik za Projektovanje Puteva u Republici Srbiji, Dio 5.3 Kružne Raskrsnice. Serbian Authority for Roads, Beograd (2012)Google Scholar
  11. 11.
    Deluka-Tibljaš, A., Tollazzi, T., Barišić, I., Babić, S., Šurdonja, S., Renčelj, M., Pranjić, I.: Smjernice Za Projektiranje Kružnih Raskrižja Na Državnim Cestama. Hrvatske Ceste, Zagreb, Rijeka (2014)Google Scholar
  12. 12.
    Institute of Transport and Communications: Smjernice Za Projektiranje i Opremanje Raskrižja Kružnog Oblika - Rotora. Institute of Transport and Communications, Zagreb (2002)Google Scholar
  13. 13.
    Fortuijn, L.G.H.: Turbo roundabouts: design principles and safety performance. J. Transp. Res. Board 2096, 16–24 (2009)CrossRefGoogle Scholar
  14. 14.
    Džambas, T., Ahac, S., Dragčević, V.: Design of turbo roundabouts based on the rules of vehicle movement geometry. J. Transp. Eng. 143(7), 7–10 (2016)Google Scholar
  15. 15.
    Xu, H., Zhang, K., Zhang, D.: Multi-level traffic control at large four-leg roundabouts. J. Adv. Transp. 50, 988–1007 (2016)CrossRefGoogle Scholar

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

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

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