| 11. |
- Adell, Emeli, et al.
(författare)
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Development of HMI components for a driver assistance system for safe speed and safe distance
- 2006
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Ingår i: [Host publication title missing].
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Konferensbidrag (refereegranskat)abstract
- A pre-screening procedure with a number of candidate Human-Machine-Interaction solutions (visual, auditory and haptic) for the concept of Safe Speed and Safe Distance was carried out. Two groups of about 30 test persons participated in the two-phase test procedure. Eleven candidate visual displays for speed information and ten alternatives for distance warning as well as twelve auditory warning sounds were screened by a standard procedure. Two alternatives of haptic feed-back via the accelerator pedal were tested in a mock-up driving seat. The activity resulted in recommendations for visual, auditory and haptic feedback alternatives to build the “warning package”.
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| 12. |
- Adell, Emeli, et al.
(författare)
-
Driver comprehension and acceptance of the active accelerator pedal after long-term use
- 2008
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Ingår i: Transportation Research. Part F: Traffic Psychology and Behaviour. - : Elsevier BV. - 1369-8478. ; 11:1, s. 37-51
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Tidskriftsartikel (refereegranskat)abstract
- Driver comprehension and acceptance of the active accelerator pedal (AAP) after long-term use were evaluated in a large-scale Swedish trial held in 2000-2002. The system was installed in the cars of 281 test drivers who then used it for between six months and a year. The participants' responses, elicited by questionnaires in the end of the trial, showed a positive rating of the concept of the AAP, while the willingness to pay for it was lower than for other driver-assistance systems studied elsewhere. The typically skeptical driver was a young, male, company car driver with initially negative attitude and a faulty AAP. The typically enthusiastic driver was an older, female, private driver with initially positive attitude and a fault-free AAP. The drivers found that the system, if not satisfactory, was useful but added to the emotional pressure felt by the driver. However, they did think it had positive impacts on performance and safety. Still, the largest perceived effect was a decrease in the risk of being fined for speeding. The gap between the concept of the AAP and willingness to keep and pay for the system puts a clear focus on the importance to define acceptance and developing a tool to ensure reliable assessments of it.
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| 13. |
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| 14. |
- Adell, Emeli, et al.
(författare)
-
Field trials with ISA in Hungary
- 2004
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Ingår i: [Host publication title missing].
-
Konferensbidrag (refereegranskat)abstract
- Field experiments with ISA (Intelligent Speed Adaptation) has been carried out in the city of Debrecen, Hungary. Twenty vehicles were equipped with two kinds of ISA systems: 1) support via an active accelerator pedal and 2) warning via beep signals and flashing red light when exceeding the speed limit. Speed was continually logged in all vehicles and the test drivers were interviewed. The results show that they had a positive attitude towards ISA generally, but they reported some negative changes in workload factors. They liked the warning beep signal more than support via the gas pedal.
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| 15. |
- Adell, Emeli, et al.
(författare)
-
Field trials with ISA in Hungary and Spain
- 2004
-
Ingår i: [Host publication title missing].
-
Konferensbidrag (refereegranskat)abstract
- Within the framework of the European project, PROSPER, field experiments with ISA (Intelligent Speed Adaptation) were carried out in Hungary and Spain. Twenty vehicles in each country were equipped with two kinds of ISA systems: 1) warning via an active accelerator pedal and 2) warning via beep signals and flashing red light when exceeding the speed limit. Both systems are based on a GPS receiver and a digital map with speed limits. Speed was continually logged in all vehicles and the test drivers were interviewed. The effects of the systems will be presented at the congress.
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| 16. |
- Adell, Emeli, et al.
(författare)
-
How Is Acceptance Measured? : Overview of Measurement Issues, Methods and Tools
- 2014
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Ingår i: Driver Acceptance of New Technology. - Farnham, Surrey, England : Ashgate. - 9781409439844 ; , s. 74-88
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Bokkapitel (refereegranskat)abstract
- This chapter describes how acceptance has been measured and identifies various measurement categories. The relationship between these measurement methods and the different definitions of acceptance appearing in the literature is described and the lack of correspondence between definition and measurement is highlighted. The chapter illustrates the different outcomes of acceptance measurements depending on choice of assessment method and gives some guidance that could be used depending on the purpose of the assessment.
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| 17. |
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| 18. |
- Adell, Emeli, et al.
(författare)
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Modelling Acceptance of Driver Assistance Systems : Application of the Unified Theory of Acceptance and Use of Technology
- 2014
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Ingår i: Driver Acceptance of new technology. - Farnham, Surrey, England : Ashgate. - 9781409439844 ; , s. 23-34
-
Bokkapitel (refereegranskat)abstract
- This chapter provides a brief overview of acceptance models used within the area of information technology. One particular model, the Unified Theory of Acceptance and Use of Technology (UTAUT), is then discussed, and a study is reported in which the model was used to assess driver acceptance of a particular driver assistance system. The key findings of that study are reported, and suggestions are made for refining UTAUT to make it more suitable for assessing acceptance of driver assistance systems.
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| 19. |
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| 20. |
- Adell, Emeli, et al.
(författare)
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Test of HMI Alternatives for Driver Support to Keep Safe Speed and Safe Distance - A Simulator Study
- 2008
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Ingår i: The Open Transportation Journal. - : Bentham Science Publishers Ltd.. - 1874-4478. ; 2, s. 53-64
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Tidskriftsartikel (refereegranskat)abstract
- This paper describes a driving simulator trial to evaluate driver reactions to a number of alternative information/ warning modes of a multi-modal system for the “safe speed and safe distance” concept. In 2006, eight Human Machine Interaction alternatives, consisting of a combination of visual, haptic and auditory modes were used alternatively to give information/warning to the driver on safe speed, safe distance and the prevailing speed limit. Thirty-four test drivers drove once without the SASPENCE system and twice with the system. The system did not affect the speed behaviour of the driver in either normal conditions or sharp curves. The average number of alarms was slightly larger when driving with the system. The haptic HMI alternative - the combination of force feedback in the accelerator pedal and vibration of the seat belt for speed warning and pulsation in the accelerator pedal for distance warning - gave the lowest proportion of time of being in an unsafe situation, and improved driver-reaction time most. This haptic alternative also resulted in the most positive driver ratings/experiences of the system. The visual alternatives used were positively rated by the drivers, but no clear differences between them could be found according to opinions. The auditory feedback was not appreciated by the drivers. All the drivers stated they would accept the SASPENCE system if the system was installed in their cars free of charge. The majority would accept a system that was both informative and advisory, while some of them also stated they would accept an intervening system.
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