A SAFETY EVALUATION OF CURRENT DESIGN CRITERIA FOR STOPPING SIGHT DISTANCE
A REVIEW IS PRESENTED OF THE CURRENT AASHO DESIGN STANDARDS AND AN EVALUATION OF THESE STANDARDS BASED ON EXISTING PRACTICES. THE EVALUATION CONSIDERED THE CRITERIA THAT WERE EMPLOYED IN DEVELOPING THE STANDARDS AND THAT INCLUDE DRIVER PERCEPTION-REACTION TIME, DESIGN FRICTION FACTORS, ASSUMED SPEEDS FOR DESIGN, DRIVER'S EYE HEIGHT, AND OBJECT HEIGHT. IN ADDITION, THE REPORT PROPOSES A NEW PHILOSOPHY FOR SIGHT DISTANCE DESIGN, A PHILOSOPHY THAT CONSIDERES THE VISUAL REQUIREMENTS FOR SAFETY DEPENDING ON OPERATIONAL CONDITIONS. /AUTHOR/
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Supplemental Notes:
- Paper sponsored by Committee on Operational Effects of Geometrics and presented at the 49th 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
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Authors:
- Glennon, John C
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Discussers:
- Loutzenheiser, D W
- Publication Date: 1970
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 33-54
- Monograph Title: Relationships of highway geometry to traffic accidents
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Serial:
- Highway Research Record
- Issue Number: 312
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Days; Design; Drivers; Dryness; Eye; Fatalities; Height; Highway safety; Injuries; Mathematical models; Moisture content; Night; Reaction time; Regression analysis; Stopping sight distance; Visual perception
- Identifier Terms: AASHO Road Test
- Uncontrolled Terms: Design criteria; Driver reaction; Dry conditions; Wet conditions
- Subject Areas: Data and Information Technology; Design; Highways; Safety and Human Factors;
Filing Info
- Accession Number: 00221080
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Oct 26 1970 12:00AM