Using a Driving Simulator to Determine Most Effective Installation Locations for Illuminated Delineators on Expressways Under Snowstorm Conditions

This study investigated how the location of illuminated delineators affected the following, for drivers running under snowstorm conditions: driver subjective mental workload (SMWL), fluctuation of vehicle lateral position, and variation of driving speed. The experiment was conducted on a driving simulator. Thirty-six participants, aged 22 to 77 years, participated. The participants were exposed to four delineation conditions as the main independent variables: (1) no illuminated delineators (no delineation), (2) illuminated delineators at the shoulder (left-side delineation), (3) illuminated delineators at the median strip (right-side delineation), and (4) illuminated delineators on the left and right sides (both-sides delineation). The subjects drove in the simulator on a 4-km section of a four-lane expressway under snow-induced low-visibility for each run. SMWL was lower (i.e., less mental workload) for both-sides delineation than for left-side delineation or right-side delineation Fluctuation of vehicle lateral position and variation of driving speed were significantly better for both-sides delineation than for any of the other three delineation conditions.


  • English

Media Info

  • Media Type: DVD
  • Features: Figures; Photos; References; Tables;
  • Pagination: 14p
  • Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

Filing Info

  • Accession Number: 01153438
  • Record Type: Publication
  • Report/Paper Numbers: 10-1798
  • Files: TRIS, TRB
  • Created Date: Jan 25 2010 10:49AM