Existing standards and guidelines for the application of signs and markings are unsuited and inefficient for use on low-volume rural roads (less than 400 ADT). To alleviate this inadequacy, several potentially hazardous situations were evaluated to ascertain actual needs for signs and markings as they relate to economy and safety. These evaluations were based on recent research and on probability of conflict analyses regarding the needs for signing and marking of intersections, horizontal curves, and sections of inadequate passing sight distance. The research revealed that more efficient intersection control can be attained from the careful application of STOP signs and CROSS ROAD warning signs based on approach speed, sight distance, and combined intersecting volumes. It was found that the treatment of horizontal curves can be made more efficient through the application of more stringent guidelines without adversely affecting safety. Striping of no-passing zones was found to be very inefficient in most instances, as the probability of conflict in these situations is virtually nil; guidelines for alternative treatments are presented. Overall, it was the opinion of the authors that application of guidelines suited to the rural context would result in savings in time, money, and frustration on the part of responsible agencies. /Author/

  • Supplemental Notes:
    • This article appeared in Purdue University Engineering Bulletin No. 147, which contains the proceedings of 62nd Annual Road School held at Purdue University, March 9-11, 1976.
  • Corporate Authors:

    Purdue University

    Road School
    Lafayette, Indiana,   United States  47907
  • Authors:
    • Walton, N E
    • Mounce, J M
    • Stockton, W R
  • Publication Date: 1976-3

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 19-35

Subject/Index Terms

Filing Info

  • Accession Number: 00182542
  • Record Type: Publication
  • Report/Paper Numbers: Report No. 147 Proceeding
  • Files: TRIS
  • Created Date: Sep 27 1978 12:00AM