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Minimum Retroreflectivity Levels for Blue and Brown Traffic Signs

Vincent D. Reynolds, MBA, PE

Signs along our nation’s highways and streets provide valuable information such as wayfinding, warnings, regulations, street names and other information. These signs have to be developed so that they may be recognized by all drivers at the proper distance along the highway.

This course covers the research performed in order to determine the minimum reflectivity for overhead guide signs and street name signs. The research emphasizes signs with blue and brown sheeting with white lettering.

The research in the text uses participants of various ages from age 55 and older and from varying demographics. Symbol size, roadway glare and roadway lighting will be considered in each study to determine the minimum reflectivity required for various signages.

The student will be directed to study the document “Minimum Retroreflectivity Levels for Blue and Brown Traffic Signs,” as published on the website of the Federal Highway Administration (FHWA).

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.

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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.