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Evaluation of Safety Effects of Driver Assistance Systems Through Traffic Simulation
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology. (Trafiksystem)
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology. (Trafiksystem)ORCID iD: 0000-0001-9635-5233
2006 (English)In: Transportation Research Record, ISSN 0361-1981, E-ISSN 2169-4052, no 1953, 81-88 p.Article in journal (Refereed) Published
Abstract [en]

Road safety is a major concern in all countries, and large effortsare constantly dedicated to create safer traffic environments. Todayincreasing attention is turned toward active safety improvingcountermeasures that improve road safety by reducing accidentrisks. Such active countermeasures include advanced driver assistancesystems (ADAS). To ensure that these new applicationsresult in real safety improvements, a priori estimations of safetyeffects are needed. This paper considers estimation of the safetyeffects of ADAS through traffic simulation. Requirements imposedon a traffic simulation model to be used for ADAS evaluation arepresented, and a car-following model to be used in simulations thatinclude ADAS-equipped vehicles is proposed. ADAS have an impacton traffic through the functionalities of ADAS and throughchanges in driver behavior for ADAS-equipped vehicles. Driverbehavior for ADAS-equipped vehicles has usually not been consideredin previous simulation studies, including those for ADASequippedvehicles. Simulation runs of rural road traffic that usedthe proposed car-following model did, however, indicate that behavioralchanges caused by the ADAS were important factors forthe safety impact. Modeling of the behavior of drivers in ADASequippedvehicles is therefore essential for reliable conclusions onthe road safety effects of ADAS.

Place, publisher, year, edition, pages
2006. no 1953, 81-88 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-12422DOI: 10.3141/1953-10OAI: oai:DiVA.org:liu-12422DiVA: diva2:56
Available from: 2008-09-04 Created: 2008-09-04 Last updated: 2017-12-07Bibliographically approved
In thesis
1. Traffic Simulation Modelling of Rural Roads and Driver Assistance Systems
Open this publication in new window or tab >>Traffic Simulation Modelling of Rural Roads and Driver Assistance Systems
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Microscopic traffic simulation has proven to be a useful tool for analysis of varioustraffic systems. This thesis consider microscopic traffic simulation of rural roads andthe use of traffic simulation for evaluation of driver assistance systems.

A traffic simulation modelling framework for rural roads, the Rural Traffic Simulator(RuTSim), is developed. RuTSim is designed for simulation of traffic on singlecarriageway two-lane rural roads and on rural roads with separated oncoming trafficlanes. The simulated traffic may be interrupted by vehicles entering and leaving themodelled road at intersections or roundabouts.

The RuTSim model is applied for analysis of rural road design alternatives.Quality-of-service effects of three alternatives for oncoming lane separation of anexisting Swedish two-lane road are analysed. In another model application, RuTSimis used to simulate traffic on a Dutch two-lane rural road. This application illustratesthat the high level of model detail of traffic micro-simulation may call for use of differentmodelling assumptions regarding driver behaviour for different applications,e. g. for simulation of traffic in different cultural regions.

The use of traffic simulation for studies of driver assistance systems facilitateimpact analyses already at early stages of the system development. New and additionalrequirements are however then placed on the traffic simulation model. It isnecessary to model both the system functionality of the considered driver assistancesystem and the driver behaviour in system equipped vehicles. Such requirements canbe analysed using RuTSim.

In this thesis, requirements on a traffic simulation model to be used for analysisof road safety effects of driver assistance systems are formulated and investigatedusing RuTSim. RuTSim is also applied for analyses of centre line rumble stripson two-lane roads, of an overtaking assistant and of adaptive cruise control. Thesestudies establish that the assumptions made regarding driver behaviour are crucialfor traffic simulation based analyses of driver assistance systems.

Place, publisher, year, edition, pages
Norrköping: Linköping University Electronic Press, 2008. 33 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1211
Keyword
Microscopic traffic simulation, Rural Traffic Simulator(RuTSim)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-12428 (URN)978-91-7393-806-8 (ISBN)
Public defence
2008-10-03, TP1, Täppan, Campus Norrköping, Linköpings universitet, Norrköping, 13:15 (English)
Opponent
Supervisors
Available from: 2008-09-25 Created: 2008-09-04 Last updated: 2014-11-28Bibliographically approved

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Lundgren, JanTapani, Andreas

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