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Know Your Retroreflectivity

Agencies have until June 14, 2014 to implement an assessment or management method that is designed to maintain regulatory and warning sign retroreflectivity at or above the minimum levels in Table 2A—3 of the 2011 Minnesota Manual on Uniform Traffic Control Devices (MN MUTCD). Read more in an updated four-page document—Maintaining Traffic Sign Retroreflectivity from the Federal Highway Administration (FHWA).

More Resources:

  1. Daytime Color Appearance of Retroreflective Traffic Control Sign Materials
  2. Minnesota's Best Practices for Traffic Sign Maintenance/Management Handbook
  3. Putting Research Into Practice: Establishing a Sign Retroreflectivity Maintenance Program
  4. Full report Sign Retroreflectivity: A Minnesota Toolkit