Sensitivity of Detection Response Task (DRT) to the Driving Demand and Task Difficulty
DOI: 10.17077/drivingassessment.1468
archive: archived pipeline: cataloged verified
Abstract
University of Iowa Masthead Logo Iowa Research Online Driving Assessment Conference 2013 Driving Assessment Conference Jun 18th, 12:00 AM Sensitivity of Detection Response Task (DRT) to the Driving Demand and Task Difficulty Marie-Pierre Bruyas IFSTTAR-LESCOT, Bron, France Laëtitia Dumont IFSTTAR-LESCOT, Bron, France Follow this and additional works at: https://ir.uiowa.edu/drivingassessment Bruyas, Marie-Pierre and Dumont, Laëtitia. Sensitivity of Detection Response Task (DRT) to the Dri
Summary
Driving-simulator validation study assessing sensitivity of three Detection Response Task (DRT) variants — Head-mounted DRT (HDRT), Remote DRT (RDRT), and Tactile DRT (TDRT) — to driving demand and to secondary-task difficulty. Conducted to inform the ISO TC22/SC13/WG8 standardisation effort on DRT as a method for measuring cognitive load on driver attention. Both cognitive auditory and visual-manual secondary tasks were used at two difficulty levels.
Key finding
DRT response times increased with driving demand and with cognitive auditory task difficulty as expected, but did not differentiate visual-manual task difficulty levels — interpreted as attentional reallocation plus a ceiling effect, with implications for how DRT is used in the forthcoming ISO standard.
Methodology
Driving simulator with two driving-demand scenarios. Three DRT modalities tested: HDRT (head-mounted visual), RDRT (remote visual), and TDRT (tactile). Two secondary-task modalities — cognitive auditory and visual-manual — each at two difficulty levels. Dependent measure: DRT response time across conditions.
Sample size: Simulator study; specific N not extracted
Quality score: 5 / 5