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On the interaction between driver assistance systems and drivers in situations of system failure

Josef Nilsson (Institutionen för signaler och system, Mekatronik ; Extern ; SAFER - Fordons- och Trafiksäkerhetscentrum )
Göteborg : Chalmers University of Technology, 2011. - 88 s.

The level of automation is increasing in road vehicles as driver assistance systems take control of both speed and steering. Benefits of this development are expected in the form of improved safety, driver comfort, traffic efficiency, etc. However, with increased technical complexity, software content, and electro-mechanical interfaces, there are also increased risks from failures.

The objective of this thesis is first to investigate driver performance in situations where assistance systems fail, and second to propose strategies to improve these situations by optimizing driver controllability. In this work, an adaptive cruise control system, a system that automates speed keeping of the vehicle, was chosen as a representative example of a driver assistance system for analysis. One driver interview study and one experimental driving simulator study was conducted. Results indicate that drivers' use of assistance systems change after time of usage and that their interpretation of the functionality of the systems can be rudimentary even after several months of usage. Because an adequate and correct understanding of the systems is important to control failures, it is proposed that drivers are informed and educated about system capabilities and limitations. Furthermore, a moving-base driving simulator was developed and used in an experimental study to investigate drivers' performance when an adaptive cruise control system fails. Findings suggest that patterns can be identified for the strategies that drivers apply to control failures. It was also found that certain failures are more difficult for drivers to control than others.

Nyckelord: automotive safety, driver assistance systems, functional safety, controllability, Chalmers driving simulator, adaptive cruise control, dependability, fault injection, brake failure

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Denna post skapades 2011-11-23. Senast ändrad 2011-11-23.
CPL Pubid: 148876


Institutioner (Chalmers)

Institutionen för signaler och system, Mekatronik
SAFER - Fordons- och Trafiksäkerhetscentrum



Chalmers infrastruktur

Relaterade publikationer

Inkluderade delarbeten:

A brief paper on improving active safety systems via HMI and dependability analysis

Exploring end-user experiences: self-perceived notions on use of adaptive cruise control systems


Datum: 2011-12-16
Tid: 13:00
Lokal: room EA, floor 4, Hörsalsvägen 11, Göteborg
Opponent: Professor Tony Larsson

Ingår i serie

R - Department of Signals and Systems, Chalmers University of Technology R017/2011