Minimum Retroreflectivity Levels for Blue and Brown Traffic Signs
This online engineering PDH course describes the research activities and consequent findings related to the development of recommendations for maintained retroreflectivity (MR) levels for white-on-blue signs and white-on-brown signs. It also includes an investigation related to MR levels needed for complex visual conditions that include glare from oncoming headlamps and fixed roadway lighting.
In 2003, the Federal Highway Administration published research recommendations for minimum MR levels for traffic signs. The recommendations included most sign types but not white-on-blue signs or white-on-brown signs. In addition, the 2003 MR levels were based on conditions representing dark rural environments.
This 4 PDH online course is applicable to all traffic engineers, transportation planners, sign manufacturers and all personnel interested in learning about or who are involved in the planning and determination of minimum retroreflectivity levels for traffic signs.
This PE continuing education course is intended to provide you with the following specific knowledge and skills:
- Understanding research objectives and activities
- Learning about minimum retroreflectivity, glare and surround complexity
- Understanding the experimental variables, luminance levels and environmental conditions
- Evaluating experimental results of white-on-blue signs vs. white-on-brown signs
- Learning about the luminance threshold levels and minimum retroreflectivity levels
In this professional engineering CEU course, you need to review the Federal Highway Administration (FHWA) no. FHWA-HRT-08-029, "Minimum Retroreflectivity Levels for Blue and Brown Traffic Signs", April 2008.
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