Citation

Al-Suleiman T, Gharaybeh FA. Indian Highw. 1997; 25(12): 29-37.

Copyright

(Copyright © 1997, Indian Roads Congress)

DOI

unavailable

PMID

unavailable

Abstract

Properly designed highway shoulders improve the safety and engineering properties of roads in important ways. A study of three important aspects of road shoulder performance is presented. An investigation was made of a subjective procedure for rating shoulder condition, used in Jordan. A panel of five raters, representing local road users, evaluated the same road sections independently on a numerical rating scale from 1 (bad) to 5 (excellent). The condition of paved and unpaved roads was compared. Four regression models were used to study the relationship between shoulder defects or damage and the condition of the shoulder as rated subjectively. The results of the regression analyses and analyses of variance are tabulated. The regression models were applied to investigate the effect of road class and shoulder type on shoulder condition rating. It was found that the slopes of paved and unpaved shoulders had more effect on shoulder condition for primary than secondary roads. The build-up of unpaved shoulders affected it more for secondary than primary roads. The drop-off of paved and unpaved shoulders affected it more for primary than secondary roads. The deterioration of paved shoulders affected it more for primary than secondary roads.