Development of a model performance-based sign sheeting specification based on the evaluation of nighttime traffic signs using legibility and eye-tracker data.

Details

• Alternative Title:
  Project title: Determining nighttime driver signing needs
• Creators:
  Carlson, Paul ; Miles, Jeff ; Park, Eun Sug ; Young, Sarah ; Chrysler, Susan ; Clark, Jerremy
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Traffic control devices
  • Traffic signs
  • Traffic signals
  • Road markings
  • Safety
  • Evaluation Traffic signs and signals--Texas--Evaluation
  • Road markings--Texas--Evaluation
  • Roads--Texas--Safety measures
• Publication/ Report Number:
  FHWA/TX-10/0-5235-1-VOL1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  technical report; Sept. 2005¿Feb. 2009.
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  This project focused on the evaluation of traffic sign sheeting performance in terms of meeting the nighttime ; driver needs. The goal was to develop a nighttime driver needs specification for traffic signs. The ; researchers used nighttime sign legibility and eye-tracker data to assess the performance needs of nighttime ; drivers on a closed-course facility as well as on the open road. The researchers also used internally ; illuminated signs during the research to control the sign luminance (rather than being constrained to the ; luminance curves provided by the retroreflective sheeting materials on the market). Using the results of the ; nighttime legibility and eye-tracker studies, the researchers developed a classification scheme for ; retroreflective sheeting materials based on luminance requirements derived from the study. Then the ; researchers modeled the retroreflective geometries resulting from common roadway scenarios (sign position, ; roadway type and cross-section, vehicle size, etc). Using the luminance requirements derived from the study ; and market-weighted headlamp flux matrices, the researchers developed an approach to sign sheeting ; specification that is based on nighttime driver needs.
  More +
• Format:
  PDF
• Funding:
  0-5235
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/6141/dot_6141_DS1.pdf
• File Type:
  [PDF - 2.64 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:8cf281117823ce477188d74f9983bd56add229ac04005ef4f2a43e3021c5df6c2c4a5c57abb322565386c49d8137581b9ff5ba8dd726b2290a05d1bfda92b15b