DRIVING PERFORMANCE UNDER NIGHTTIME CONDITIONS OF VISUAL DEGRADATION

NIGHTTIME DRIVING PERFORMANCE WAS STUDIED IN RELATION TO FOUR DIFFERENT DRIVING TASKS AND FOUR LEVELS OF VISUAL DEGRADATION. FOUR MATCHED BUT TASK-DIFFERENTIATED GROUPS OF FOUR SUBJECTS EACH DROVE AN INSTRUMENTED VEHICLE AT NIGHT ON A SUPERHIGHWAY. THE FOUR LEVELS OF VISUAL DEGRADATION PRESENTED THE ROADWAY TO THE DRIVER AT OVERALL LUMINANCE LEVELS OF 5.228ML, 2.688ML, 0.755ML, AND 0.168ML. THE TWO DEPENDENT VARIABLES WERE VEHICLE SPEED AND VEHICLE DISTANCE FROM THE WHITE SHOULDER LINE. THE VISUAL DEGRADATION CAUSED THE SUBJECTS TO SLOW DOWN AND POSITION THE VEHICLE SLIGHTLY FARTHER AWAY FROM THE SHOULDER. IT WAS FOUND THAT A DRIVER ALSO IS CAPABLE OF DRIVING AT A CONSTANT SPEED AND OF MAINTAINING A CONSTANT LANE POSITION AT VERY HIGH DEGREES OF VISUAL DEGRADATION. THESE RESULTS WERE EXPLAINED BY THE DIFFERENT INSTRUCTIONS GIVEN TO EACH TASK GROUP. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1329271
• Supplemental Notes:
  • Vol 9, No 5, PP 427-432
• Authors:
  • Matanzo, F
  • Rockwell, T H
• Publication Date: 1967-10

Media Info

• Serial:
  • Human Factors
  • Publisher: Sage Publications, Incorporated
  • ISSN: 0018-7208
  • EISSN: 1547-8181
  • Serial URL: http://hfs.sagepub.com/

Subject/Index Terms

• TRT Terms: Brightness; Distance; Driver performance; Drivers; Edge lines; Highways; Night visibility; Personnel performance; Reaction time; Studies; Traffic speed; Visual perception
• Uncontrolled Terms: Degradation; Driver reaction
• Old TRIS Terms: Speed studies
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00219953
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 12 1994 12:00AM