A DEVICE FOR ESTABLISHING A SAFE STOPPING DISTANCE AT NIGHT

A METHOD WAS DEVISED TO ESTABLISH A SAFE STOPPING DISTANCE AT NIGHT AND ITS CONVERSION INTO MILES PER HOUR CONSIDERING THE EXISTING LIGHT CONDITIONS AS DEVISED FOR PURPOSES OF ENFORCEMENT OF THE BASIC SPEED LIMITATION TYPE STATUTE. STOPPING DISTANCES ARE DETERMINED AS IN ACCORDANCE WITH TRAFFIC ENGINEERING. A VISUAL AID DEVICE WAS DEVELOPED TO EXPLAIN THE METHODS OF DEMONSTRATING PERCEPTUAL AND STOPPING DISTANCES AND HOW CHANGES IN ONE AFFECTED THE OTHER. THE APPARATUS CAN BE DESCRIBED AS ONE WHEREBY THE DATA FROM SCIENTIFIC EXPERIMENTS MAY BE REDUCED TO GRAPHIC REPRESENTATION IN SHOWING LAYMEN THE DANGERS OF EXCESSIVE NIGHT DRIVING SPEEDS. REFERENCES: TRAFFIC ENGINEERING, M.M. MATSON, S.S. SMITH, F.W. HURD, P. 259, MCGRAW-HILL BOOK CO., NEW YORK, 1955

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/163/163-003.pdf
• Supplemental Notes:
  • No 163, pp 21-26, 1 FIG, 2 REF 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.
• Authors:
  • Swanson, Clifford O
• Discussers:
  • Stonex, K A
  • Skeels, P C
• Publication Date: 1957

Media Info

• Media Type: Digital/other
• Pagination: 6p
• Monograph Title: Night visibility, 1957
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 163
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Graphics; Highway safety; Laws; Light; Night; Perception; Speed; Speed limits; Stopping distances
• Uncontrolled Terms: Speed laws
• Old TRIS Terms: Graphic methods; Thresholds (Perception)
• Subject Areas: Highways; Law; Safety and Human Factors;

Filing Info

• Accession Number: 00220320
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Apr 21 1994 12:00AM