These studies were concerned with the improvement of lane occupancy and parking signs. New designs were developed and tested. Experimentl subjects viewed slides of the signs and judged whether the sign permitted certain lane occupancy or parking maneuvers. The effectiveness of each sign type was determined by the speed and accuracy of the subject's responses. Fixed schedule lane occupancy signs were found to be ineffective, and perhaps dangerous. They gave an unacceptably high error rate, and subjects required over twice as long to interpret these signs as equivalent changeable message signs. The most successful lane occupancy signs showed occupancy status below the notation "right", "center" or "left" lane. The concept was tested that drivers would be better able to understand complex parking signs if information was arranged by time. On the average, time-referenced signs showed three-fourths the errors of the equivalent conventional signs now on the road. Rules were suggested for the improvement of parking-standing signs. /FHWA/

  • Corporate Authors:

    Federal Highway Administration

    Traffic Systems Division, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Gordon, D A
  • Publication Date: 1978-6

Media Info

  • Pagination: 75 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00188983
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-78-689 Final Rpt.
  • Files: TRIS, ATRI, USDOT
  • Created Date: Apr 12 1979 12:00AM