EFFECTS OF ILLUMINATION ON OPERATING CHARACTERISTICS OF FREEWAYS

IN PART I, OBSERVATIONS ON THE TRAFFIC STREAM MADE UNDER TWO INTENSITIES OF ARTIFICAL ILLUMINATION AND UNDER DAYLIGHT CONDITIONS ARE STUDIED ALONG WITH AN ANALYSIS OF THE ACCIDENT RATE UNDER DAY AND NIGHT CONDITIONS OVER A 5 YEAR PERIOD. DATA ON THE TRAFFIC STREAM WERE COLLECTED BY TIME- LAPSE PHOTOGRAPHY. PART II CENTERS UPON THE INDIVIDUAL DRIVER AND HIS PERFORMANCE IN CONTROLLING HIS VEHICLE UNDER DIFFERENT NIGHTTIME ILLUMINATION LEVELS. THE SUBJECTS DROVE AN INSTRUMENTED VEHICLE EQUIPPED WITH AN OSCILLOGRAPH RECORDER AND SENSORS FOR VELOCITY, STEERING, AND GAS PEDAL MOVEMENTS. PART III DEALS WITH THE INSTRUMENTATION OF THE VEHICLE. PART IV PERTAINS TO THE AREA OF DRIVER APPREHENSION, THE EFFECTS OF ILLUMINATION CHANGE UPON VISUAL PHENOMENA AND DRIVER RESPONSES AND THE EFFECTS UPON TRAFFIC FLOW, DRIVER BEHAVIOR, AND ACCIDENTS.

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    • 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. No 60, NchrP PROJECT 5-2 (1) 148 PP, 102 FIG, 71 TAB, 14 APP
  • Publication Date: 1968-12

Media Info

  • Media Type: Digital/other
  • Serial:
    • NCHRP Report
    • Issue Number: 60
    • Publisher: Transportation Research Board
    • ISSN: 0077-5614
  • Publication flags:

    Open Access (libre)

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Filing Info

  • Accession Number: 00225455
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 10 1994 12:00AM