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Sign Retroreflectivity

Signs are considered essential to communicating regulatory, warning, and guidance information. It is critical that signs are able to fulfill this role during both daytime and nighttime periods. The ability of a sign to fulfill its role during nighttime periods is provided by a unique form of reflection known as "retroreflectivity." Various methods can be used within an agency's sign management processes to meet and maintain a minimum retroreflectivity requirement for traffic signs.

This course will review retroreflectivity requirements and the MUTCD, as well as give basic sign types and obstructions to understand retroreflectivity.

Who Should Attend

Intended for managers, decision-makers, and maintenance personnel, this course describes sign retroreflectivity concepts and summarizes new Federal requirements. After taking the course, participants will understand the methods for maintaining traffic sign retroreflectivity and which method is best for their community.



  • Establishing a method
  • Understanding the MUTCD
  • Sign Retroreflectivity Standards & Compliance Dates and Liability
  • Basics of Signs
  • Exempt Signs
  • Sign Obstructions and Sign Sheeting
  • Retroreflectivity Concepts
  • Demonstration of Retroreflectivity
  • Determining Good Signs vs Bad Signs

Dates & Locations


$95 - Local Governments

$115 - All other agencies