Color Block Task

With the increasing use of in-vehicle information system (IVIS), driver distraction, especially visual distraction, has increased dramatically. Evaluating the impact of IVIS on traffic safety is important. Previous studies have used various standard secondary-task methods in place of real IVIS interactions to obtain quantitative and scalable results. However, traditional visual secondary tasks, such as the Surrogate Reference Task (SuRT) and the Arrow Task, are insufficient to simulate incrementally increased workload with fine details or contrast difference. This study designed a new form of visual secondary task (Color Block Task, CoBT) that could provide appropriate difficulty, incremental complexity, and contrast option for visual distraction assessment. The validity of this method was tested in a driving simulator by analyzing the reaction time and accuracy of the CoBTs, the reaction time and accuracy of a Tactile Detection Response Task (TDRT), and drivers’ vehicle control performance. Results showed that CoBT is a valid tool to mock drivers’ in-vehicle visual demand. CoBT and TDRT performance can effectively distinguish the difficulty levels of CoBT and explain drivers’ attention allocation pattern to some extent.

Language

  • English

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Filing Info

  • Accession Number: 01711034
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 24 2019 4:10PM