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AIDE D4.1.6 Final Activity Report PU Contract N. IST-1-507674-IP 8.2.2.3 WP2.2 Workload and Distraction Assessment Methods and Tools Work package no. Work package name Objectives (from Description of Work) Work package leader Other contractors involved Deliverables generated WP2.2 Workload and Distraction Assessment Methods and Tools While WP2.1 will focus on the development of a general evaluation and assessment methodology, WP2.2 will focus on specific methods and tools for workload and distraction measurement, to be incorporated into the general methodology. VTEC BASt, BMW, CRF, DAIMLER, INRETS, KITE, PSA, REGIENOV, TNO, VTI, UnivLeeds, No. Title Dissemination level D2.2.1 Review of existing Techniques D2.2.2_1 (a) D2.2.2_1 (b) D2.2.2_1 (c) Visual Demand Measurement tool development – restricted report Visual Demand Measurement tool development – public summary Prototype version of VDM Tool D2.2.2_2 Driver visual distraction assessment by Enhanced Occlusion Technique (EOT) D2.2.3 Development of advanced secondary task methodology D2.2.5 Driving performance assessment methods and metrics D2.2.6 Subjective assessment methods for workload D2.2.7 Empirical comparison of methods for off-line workload measurement Lead contractor PU VTEC 8 CO VTEC 18 PU VTEC 18 CO VTEC 18 CO BASt 18 PU UNIV- LEEDS Delivery month 08/10/2008 44 VTEC 22 PU VTI 22 PU INRETS 22 PP DAIMLER 34
AIDE D4.1.6 Final Activity Report PU Contract N. IST-1-507674-IP 8.2.2.3.1 Work performed and key results obtained The objectives for Workpackage 2.2 were to investigate a set of specific workload and distraction measurements methods and tools and to make sure that these would be incorporated into the general methodology. The methods focused on off-line measurement in contrast to the on-line workload estimation done in SP3. The first task performed was to look into the existing methods and metrics available at the start of the AIDE project. A thorough State of the Art report was created covering driving and visual performance methods, metrics and tools, the Occlusion technique, physiological measures, secondary task methods (such as the Peripheral Detection Task), subjective assessment methods and finally situation awareness measures. A visual demand measurement tool (VDM tool) was developed in task 2.2.2 in order to allow for an improved way of speeding up the analysis of eye movement data (see below for an example view of the tool). The main ideas were to have interchangeable eye trackers and with a graphical user interface that would allow for an easy analysis with non-professional users compared to the tedious traditional way of doing this kind of analysis with manual video transcription. Figure 12 – Example view of the VDM tool In task 2.2.2 the Occlusion technique was also refined. The development of the so called Enhanced Occlusion Technique (EOT) was based on the original occlusion technique using occlusion goggles. Both the original occlusion technique and EOT can be used for the evaluation of in-vehicle information tasks in early stages of HMI development. In comparison with the original occlusion technique, EOT presents a better simulation of real driving task and driver workload. A continuous sensorimotor tracking task, which the subjects performed additionally to the IVIS task under occlusion conditions, was developed within AIDE. Furthermore, the peripheral detection task was investigated and modified in order to provide the best detection task method for the AIDE evaluation methodology. In AIDE two main research questions were tested: (i) is sensitivity to demand depending on stimuli eccentricity and (ii) is sensitivity to demand depending on stimuli modality? In order to test these questions several modifications of the stimulus devices were made where the traditional peripherally placed stimuli was compared to tactile stimuli given on arm wrist, neck and in seat as well as comparison with audio stimuli. See picture below for an example from the study performed by University of Leeds. The work in task 2.2.5 constituted a thorough investigation of a selection of driving performance and Lane Change Test (LCT) based metrics. As a result a set of control metrics were chosen and specified in terms of definition, description of use, interpretation, guidelines and limits. Primarily, 08/10/2008 45 VTEC
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