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Sustainability 2018, 10(4), 1060;

Introduction of Autonomous Vehicles: Roundabouts Design and Safety Performance Evaluation

Faculty of Civil Engineering, University of Rijeka, Radmile Matejčić 3, 51000 Rijeka, Croatia
Faculty of Engineering and Architecture, University of Enna Kore, Viale delle Olimpiadi, 94100 Enna, Italy
Author to whom correspondence should be addressed.
Received: 15 February 2018 / Revised: 18 March 2018 / Accepted: 31 March 2018 / Published: 3 April 2018
(This article belongs to the Section Sustainable Transportation)
PDF [4057 KB, uploaded 3 May 2018]


Driving experiences provided by the introduction of new vehicle technologies are directly impacting the criteria for road network design. New criteria should be taken into consideration by designers, researchers and car owners in order to assure traffic safety in changed conditions that will appear with, for example, introduction of Autonomous Vehicles (AVs) in everyday traffic. In this paper, roundabout safety level is analysed on the originally developed microsimulation model in circumstances where different numbers of AVs vehicles are mixed with Conventional Vehicles (CVs). Field data about speed and traffic volumes from existing roundabouts in Croatia were used for development of the model. The simulations done with the Surrogate Safety Assessment Model (SSAM) give some relevant highlights on how the introduction of AVs could change both operational and safety parameters at roundabouts. To further explore the effects on safety of roundabouts with the introduction of different shares of AVs, hypothetical safety treatments could be tested to explore whether their effects may change, leading to the estimation of a new set of Crash Modification Factors. View Full-Text
Keywords: roundabout; road safety; autonomous vehicles; microsimulation tools roundabout; road safety; autonomous vehicles; microsimulation tools

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Deluka Tibljaš, A.; Giuffrè, T.; Surdonja, S.; Trubia, S. Introduction of Autonomous Vehicles: Roundabouts Design and Safety Performance Evaluation. Sustainability 2018, 10, 1060.

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