U.S. Department of Transportation
Federal Highway Administration
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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
This report is an archived publication and may contain dated technical, contact, and link information |
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Publication Number: FHWA-HRT-04-144
Date: December 2005 |
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Enhanced Night Visibility Series, Volume XIII: Phase III—Study 1: Comparison of Near Infrared, Far Infrared, High Intensity Discharge, and Halogen Headlamps on Object Detection in Nighttime Clear WeatherPDF Version (1.01 MB)
PDF files can be viewed with the Acrobat® Reader® APPENDIX E—VISION TEST RESULTSFigure 77. Bar graph. Percentage of contrast for left eye (PCLE) and percentage of contrast for right eye (PCRE) at 1.5 cycles per degree (cpd) per age group.
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