EFFECTS OF DISCRETE HEADWAY AND RELATIVE VELOCITY INFORMATION ON CAR-FOLLOWING PERFORMANCE

STUDIES WERE MADE TO DETERMINE WHETHER A DISPLAY PRESENTING CHANGING INFORMATION BEFORE THE DRIVER CAN SENSE CHANGE MIGHT IMPROVE CAR-FOLLOWING PERFORMANCE. THIS DISPLAY WOULD PROVIDE INFORMATION WHETHER THE DRIVERS HEADWAY WERE WITHIN A BANDWIDTH OR ERROR TOLERANCE ESTABLISHED BY THE EXPERIMENTER OR ELECTED BY THE DRIVER HIMSELF. ANALYSIS OF VARIANCE WAS USED TO TEST THE DATA. SUBJECTS, BANDWIDTH, AND TYPE OF DISPLAY WERE CONSIDERED AS MAJOR INDEPENDENT VARIABLES IN THE EXPERIMENT AS WELL AS THE INITIAL TARGET HEADWAY. THE DEPENDENT VARIABLES WERE THE HEADWAY VARIANCE AND RELATIVE VELOCITY VARIANCE OVER THE TRIAL. RESEARCH INDICATES THAT A DISCRETE LIGHT DISPLAY PRESENTING HEADWAY AND RELATIVE VELOCITY INFORMATION CAN IMPROVE CAR-FOLLOWING SYSTEM PERFORMANCE. BEST DISPLAY COMBINATION WOULD APPEAR TO BE THE SMALL BANDWIDTH FOR BOTH DISPLAYS. ABSOLUTE PERFORMANCE IMPROVEMENT AT CLOSE TARGET HEADWAYS SEEMS RATHER SMALL. AT CLOSE TARGET HEADWAY CONDITIONS, THE DRIVER MAY PREFER TO USE OTHER CUES THAN THOSE PROVIDED BY THE DISPLAY.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 36-46
  • Monograph Title: Road user and vehicle characteristics
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00222676
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Apr 20 1994 12:00AM