00222867

Component

http://onlinepubs.trb.org.../hrbbulletin/56/56-001.pdf

THE 1950 REVISED AMERICAN STANDARD CODE FOR SAFETY GLAZING MATERIALS FOR MOTOR VEHICLES ESTABLISHES REQUIREMENTS FOR GLAZING MATERIALS INSTALLED WITHIN LEVELS REQUISITE FOR DRIVING VISIBILITY. A STUDY TO DETERMINE THE EXTENT OF GLAZED AREAS NECESSARY FOR DRIVING VISIBILITY IS REPORTED. DATA ON CURRENT PASSENGER CARS AR GIVEN SHOWING THE AREAS AVAILABLE FOR SEEING BY ALL BUT THE TALLEST 2-1/2 PERCENT AND ALL BUT THE SHORTEST 2-1/2 PERCENT OF CALIFORNIA LICENSED DRIVERS. VISIBILITY ANGLES REQUIRED FOR OBSERVANCE OF TRAFFIC SIGNALS ARE ALSO GIVEN. FROM THE ABOVE DATA AND INFORMATION ON HUMAN DIMENSIONS, A METHOD IS SUGGESTED FOR DETERMINING THE LEVELS REQUISITE FOR DRIVING VISIBILITY APPLICABLE TO ANY AUTOMOBILE FOR VARIOUS PERCENTAGES OF DRIVERS. THE DIMENSIONS AND TECHNIQUE FOR CHECKING WINDSHIELDS TO ESTABLISH A LEVEL THAT WILL INCLUDE 85 PERCENT OF THE DRIVERS ARE GIVEN. THIS PERCENTAGE WAS TENTATIVELY AGREED UPON AS A PRACTICAL VALUE BY THE ENGINEERING COMMITTEE OF THE AMERICAN ASSOCIATION OF MOTOR VEHICLE ADMINISTRATORS IN JUNE, 1951. /AUTHOR/

No 56, pp 1-16, 7 FIG, 4 TAB, 5 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

01410474

1952

Highway Research Board Bulletin

Automobile drivers; Driving; Glazing; Motor vehicles; Traffic safety; Traffic signals; Visibility; Windshields

Highways; Safety and Human Factors

TRIS, TRB

Apr 28 1994 12:00AM

• EFFECT OF EXPOSURE TO SUNLIGHT ON NIGHT-DRIVING VISIBILITY
• EFFECT OF PATTERN DISTRIBUTION ON PERCEPTION OF RELATIVE MOTION IN LOW LEVELS OF ILLUMINATION
• SPHERICAL LENS OPTICS APPLIED TO RETRODIRECTIVE REFLECTION
• Vision at Levels of Night Road Illumination