VARIABLE PERCEPTION TIME IN CAR FOLLOWING AND ITS EFFECT ON MODEL STABILITY

THE FUNCTIONAL VARIATION OF PERCEPTION TIME (T) IN CAR FOLLOWING WAS STUDIED TO INTRODUCE A VARIABLE TIME DELAY INTO A PREVIOUSLY PROPOSED NONLINEAR MODEL. IT IS HYPOTHESIZED THAT THE RATIO OF A JUST NOTICEABLE DIFFERENCE IN VISUAL ANGLE TO THE VISUAL ANGLE IS A CONSTANT. THIS HYPOTHESIS LEADS TO A MODEL IN WHICH T IS PROPORTIONAL TO RELATIVE SPACING AND INVERSELY PROPORTIONAL TO RELATIVE SPEED. RESULTS AGREE WITH THE MODEL FOR NEGATIVE RELATIVE SPEEDS 3-18FT /SEC. A BRIEF DISCUSSION OF IDEAL FOLLOWING DISTANCE CLARIFIES THE STABILITY ANALYSIS. THE INTRODUCTION OF A VARIABLE TIME DELAY AND IDEAL FOLLOWING DISTANCE INTO THE PROPOSED CAR-FOLLOWING MODEL CHANGES THE SIZE OF THE MINIMUM ASYMPTOTIC STABILITY REGION BUT NOT THE BASIC PROPERTIES OF THE MODEL. /AUTHOR/

• Supplemental Notes:
  • Vol Mms-11, NO 3, PP 149-156
• Corporate Authors:

  Ieee Trans Man-machine Systems

  ,    
• Authors:
  • Duckstein, L
  • Unwin, E A
  • Boyd, E T
• Publication Date: 1970-9

Subject/Index Terms

• TRT Terms: Car following; Mathematical models; Perception
• Uncontrolled Terms: Models; Perception time
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00223461
• Record Type: Publication
• Files: TRIS
• Created Date: May 16 1971 12:00AM