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CityMobil: Human factors issues regarding highly-automated vehicles on an eLane

Toffetti, Antonella and Wilschut, Ellen and Martens, Marieke and Schieben, Anna and Rambaldini, Amon and Merat, Natasha and Flemisch, Frank (2009) CityMobil: Human factors issues regarding highly-automated vehicles on an eLane. Transportation Research Record: Journal of the Transportation Research Board. ISSN 0361-1981.

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In the European project ‘CityMobil’ the human factors aspects of (semi) autonomous driving are investigated. Systems in the car and in the driving environment enable the driver to drive (semi) automatically in a driving lane (eLane). One of the issues is the optimal interface for the change from automated to manual control and vice versa. Therefore, we conducted a driving simulator experiment with the aim to design and test the difference between a vocal and acoustic user interface, for a vehicle driven both manually and automatically. In the experiment the behaviour of 24 drivers was observed, focusing on the transition of control and the occurrence of system errors. The performance of the transition of control was adequate for both interfaces at the beginning and ending of an eLane. In case of system failure, 15% of drivers failed to take timely control of the car for both interfaces. However if drivers regained control, they had a shorter response time to initiated the transfer of control to a manual mode with the vocal interface. Moreover, a subjective questionnaire showed that the vocal interface had a higher acceptance and perceived usability, than the acoustic interface. This study suggests that the vocal interface was preferred by the participants and can be recommended for the HMI of (semi) automated vehicles, especially when providing warnings about the system’s malfunctioning.

Document Type:Article
Title:CityMobil: Human factors issues regarding highly-automated vehicles on an eLane
AuthorsInstitution or Email of Authors
Toffetti, AntonellaCRF
Wilschut, EllenTNO
Martens, MariekeTNO
Schieben, AnnaDLR
Rambaldini, AmonCRF
Merat, NatashaITS Leeds
Flemisch, FrankDLR
Date:October 2009
Journal or Publication Title:Transportation Research Record: Journal of the Transportation Research Board
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Keywords:automated driving, highly-automated driving, CityMobil, eLane, vocal user interface, acoustic user interface
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Fahrerassistenz (old)
Location: Braunschweig
Institutes and Institutions:Institute of Transportation Systems > Automotive
Deposited By: Anna Maria Schieben
Deposited On:22 Dec 2009 10:22
Last Modified:26 Mar 2013 13:13

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