Predicting Performance in the Occlusion Compliance Test in NHTSA Distraction Guidelines

The National Highway Traffic Safety Administration's (NHTSA's) visual-manual guidelines specify how to determine if driver interfaces are distracting. In the visual occlusion method, subjects wear a pair of goggles that cycle between being open (seeing the interface) and closed (not seeing the interface but seeing the road) to determine the task time. That method was used in a prior project to assess a next generation Hyundai navigation radio. Occlusion task time was estimated using task element times (e.g., button press durations) from the Society of Automotive Engineers (SAE) Recommended Practice J2365 (written by the Project Director and being revised by him) and Pettitt's method, that describes what drivers do when occluded.) To improve those estimates, a frame-by-frame analysis will be carried out to determine the exact time of each hand movement, etc., in the 24 hours of video data, along with the exact times the goggles cycle. Determined will be (1) the distributions of task element times, (2) how well those means compared with the times in J2365, (3) how the measured times were affected by an interrupting occlusion, (4) which task elements begun during vision were continued through occlusion, and other issues. Conceptual and computational human performance models will guide the data analysis. The results will be summarized in a technical report and SAE J2365 will be revised. Following SAE Safety and Human Factors Committee Practice, there will be periodic presentations to the entire committee (40 members, 80 information recipients) several times per year. In addition, a summary journal article will be produced. This research will be conducted by a team highly experienced in doing studies of visual occlusion, using data that already exist, to develop a low-cost assessment method codified as an SAE Recommended Practice for a safety-related topic that is of high priority to the United States Department of Transportation (USDOT). This represents a fundamental change in driver interface evaluation.


    • English


    • Status: Completed
    • Funding: $54425.00
    • Contract Numbers:


    • Sponsor Organizations:

      Research and Innovative Technology Administration

      University Transportation Centers Program
      1200 New Jersey Avenue, SE
      Washington, DC  United States  20590
    • Principal Investigators:

      Green, Paul

    • Start Date: 20140215
    • Expected Completion Date: 0
    • Actual Completion Date: 20150214
    • Source Data: RiP Project 36086

    Subject/Index Terms

    Filing Info

    • Accession Number: 01562676
    • Record Type: Research project
    • Source Agency: Center for Advancing Transportation Leadership and Safety (ATLAS Center)
    • Contract Numbers: DTRT13-G-UTC54
    • Files: UTC, RiP
    • Created Date: May 1 2015 2:50AM