Field Evaluations and Driver Comprehension Studies of Horizontal Signing

This report presents field studies in response to horizontal signing applications and a driver comprehension study of route guidance pavement markings. Speed reduction treatments included simple transverse lines, CURVE AHEAD text, CURVE text with advisory speed, and curve arrows with advisory speed. Research showed that warnings with advisory speeds were more effective than those that simply warned of an upcoming curve. Directional arrows on two-way frontage roads to reduce wrong-way movements were also evaluated. One site was evaluated in a before-after study and showed a great reduction of wrong-way movements after installation of directional arrows at the terminus of the freeway exit ramp. Researchers also assessed driver comprehension of an assortment of route guidance shields, text, and curve warnings. Drivers preferred route shields to text for exit lane assignment. Drivers demonstrated good comprehension of curve warning treatments.

  • Supplemental Notes:
    • Project Title: Evaluation of Horizontal Signing Applications.
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 3135 TAMU
    College Station, TX  United States  77843-3135

    Texas Department of Transportation

    Research and Technology Implementation Office, P.O. Box 5080
    Austin, TX  United States  78763-5080

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Chrysler, Susan T
    • Schrock, Steven D
  • Publication Date: 2005-2


  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: 86p

Subject/Index Terms

Filing Info

  • Accession Number: 01001557
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/TX-05/0-4471-2, Technical Report 0-4471-2
  • Contract Numbers: Project 0-4471
  • Created Date: Jul 7 2005 9:27AM