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Act normal: Using uncertainty about driver intentions as a warning criterion
Örebro University, School of Science and Technology. (Centre for Research on Embedded Systems (CERES))
Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad . (Embedded and Intelligent Systems Research (EIS), Inbyggda system (CERES), Örebro universitet)
2009 (English)In: Proc. 16th World Congress on Intelligent Transportation Systems, 2009, 8- p.Conference paper, Published paper (Other academic)
Abstract [en]

Cooperative safety using vehicle-to-vehicle and vehicle-to-infrastructure communication enables warning systems to take into account more detailed and longer range information than previously possible. Due to the increased prediction horizon factors that influence driver behaviour, such as traffic rules and driver intentions, must be modelled in addition to short term kinematics traditionally used in driver alert systems.We propose a cooperative warning system that models such factors using artificial potential fields taking into account multiple hypotheses regarding driver intentions. A prototype has been implemented and has been used to experimentally evaluate the feasibility of using the history of driver intention estimates as an indicator of unpredictable driver behavior.

Place, publisher, year, edition, pages
2009. 8- p.
National Category
Computer Science
Research subject
Computer and Systems Science
Identifiers
URN: urn:nbn:se:oru:diva-21426OAI: oai:DiVA.org:oru-21426DiVA: diva2:487219
Conference
16th World Congress on Intelligent Transportation Systems (ITS WC), 21-25 September, 2009, Stockholm, Sweden
Available from: 2012-01-31 Created: 2012-01-31 Last updated: 2017-10-17Bibliographically approved
In thesis
1. Situation-aware vehicles: supporting the next generation of cooperative traffic systems
Open this publication in new window or tab >>Situation-aware vehicles: supporting the next generation of cooperative traffic systems
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Wireless communication between road vehicles enables a range of cooperative traffic applications including safety, efficiency and comfort functions. A common characteristic of the envisioned applications is that they act on environmental information to intepret traffic situations in order to provide the driver with warnings or recommendations. In this thesis we explore both the detection of hazardous traffic situations in order to provide driver warnings but also the detection of situations in which the cooperative system itself may fail.

The first theme of this thesis investigates how traffic safety functions that incorporate cooperatively exchanged information can be constructed so that they become resilient to failures in wireless communication. Inspired by how human drivers coordinate with limited information exchange, the use of pre-defined models of normative driver behavior is investigated by successfully predicting driver turning intent at an intersection using mobility traces extracted from video recordings. Furthermore a hazardous driving warning criterion based on model switching behavior is proposed and evaluated through test drives. Maneuvers classified as hazardous in the tests, such as swerving between lanes and not braking for traffic lights, are shown to be correctly detected using the criterion. Whereas robust coordination mechanisms may mask communication faults to some degree, severe degradations in communication are still expected to occur in non-line-of-sight conditions when using wireless communication at 5.9 GHz.

The second theme of the thesis explores how communication performance can be efficiently logged, gathered and aggregated into maps of communication quality. Both in-network aggregation as well as centralized aggregation is investigated using vehicles in the network as measurement probes and the feasibility of the approach in terms of bandwidth and storage requirements is shown analytically. In conjunction with a proposed communication quality requirements format, tailored specifically for vehicle-to-vehicle applications, such maps can be used to enable application-level adaptation in response to situations where quality requirements likely cannot be met.

Place, publisher, year, edition, pages
Örebro: Örebro universitet, 2012. 47 p.
Series
Örebro Studies in Technology, ISSN 1650-8580 ; 52
National Category
Natural Sciences Computer Science
Research subject
Computer Science
Identifiers
urn:nbn:se:oru:diva-21338 (URN)978-91-7668-846-5 (ISBN)
Public defence
2012-02-12, Högskolan i Halmstad, Hörsal Wigfors, Halmstad, 13:15
Opponent
Supervisors
Available from: 2012-01-30 Created: 2012-01-26 Last updated: 2017-10-17Bibliographically approved

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