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Standards Development
This document defines key terms and parameters applied in the analysis of cognitive and visualmanual workload induced by transport information and control systems (TICS). It provides guidelines and minimum requirements on equipment and procedures for analysing cognitive and visual-manual load including assessment of TICS to:
— plan evaluation trials;
— specify (and install) data capture equipment; and
— validate, analyse, interpret and report metrics indicating cognitive and visual-manual demand (standards of measurement).
The described parameters and definitions provide a common source of reference for cognitive and visual-manual workload induced by TICS. It is applicable to standardized trials in laboratory-based settings. The procedures described in this document can also apply to more general assessments of cognitive and visual-manual workload while driving. Data collected and analysed according to this document will allow comparisons to be performed across different TICS applications.
The evaluation of the distraction potential of secondary task activities while driving has traditionally been focused on visual-manual tasks. In previous years, different test protocols have been developed and standardized to evaluate the distraction effects of in-vehicle information systems while driving. However, the assessment of cognitive distraction has not received much attention in this context. A new method is proposed, that combines a two-dimensional tracking task (the so called ‘Box Task’) with the Detection Response Task (ISO 17488: Road vehicles — Transport information and control systems — Detection-response task (DRT) for assessing attentional effects of cognitive load in driving). Applying this methodology visual-manual as well as cognitive distraction effects can be assessed.
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