Rural Roadway Signage: When Brighter Is Not Always Better

This article reports on findings of a Texas A& M Transportation Institute (TTI) research project on the impact of rural roadway signage brightness. Performing nighttime visibility studies on a a closed-course facility, the researchers evaluated how different levels of Speed Limit sign brightness impacted drivers' ability to read the signs and to detect potentially hazardous objects along the road. The studies revealed that the signs were too bright, actually reducing the nighttime detection distance of obstacles near or on the roadway. The researchers suggested the development of maximum retroreflective standards to accompany existing minimum retroreflectivity levels.


  • English

Media Info

  • Media Type: Print
  • Features: Photos;
  • Pagination: pp 44-45
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01538468
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 1 2014 12:19AM