Abstract:
DURING 1957, 1958, AND 1959, LATERAL PLACEMENT OBSERVATIONS WERE MADE BY THE IDAHO DEPARTMENT OF HIGHWAYS ON BITUMINOUS-PAVED 2- AND 4-LANE RURAL HIGHWAYS HAVING DIFFERENT SHOULDER DESIGNS. PLACEMENT DATA WERE RECORDED FOR 7,777 FREE-MOVING PASSENGER AND COMMERCIAL VEHICLES AT EIGHT LOCATIONS THROUGHOUT IDAHO. THE STUDY WAS MADE TO EVALUATE THE INFLUENCE OF SHOULDER DESIGN ON VEHICLE PAVEMENT. BEFORE-AND-AFTER DATA WERE RECORDED TO MEASURE THE EFFECT OF SHOULDER STRIPING AND CONTRASTING SHOULDERS. EFFECTS FROM OTHER FACTORS HAVE BEEN KEPT TO A MINIMUM BY RATIONAL SELECTION OF STUDY LOCATIONS. LATERAL PLACEMENT ON THE ROADWAY WAS RECORDED FROM VISUAL OBSERVATIONS OF THE VEHICLE IN RELATION TO 1-FT MARKINGS ON THE PAVEMENT. /HRB/
Supplemental Notes:
Vol 41, pp 415-432, 16 FIG, 4 TAB. 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.
