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Title:

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

Accession Number:

00222676

Record Type:

Component

Abstract:

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.

Supplemental Notes:

Paper sponsored by Committee on Road User Characteristics and presented at the 45th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

Monograph Accession #:

01410111

Authors:

Gantzer, Donald
Rockwell, T H

Pagination:

pp 36-46

Publication Date:

1967

Serial:

Highway Research Record

Issue Number: 159
Publisher: Highway Research Board

Media Type:

Digital/other

Features:

Figures (9) ; References (5) ; Tables (3)

Old TRIS Terms:

Subject Areas:

Data and Information Technology; Highways; Safety and Human Factors

Files:

TRIS, TRB

Created Date:

Apr 20 1994 12:00AM

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