Sign Retroreflectivity Toolkit

New National Standard

Know Your Retro

For small local agencies

• New Traffic Sign Maintenance Requirements
• Steps to Implementation
• Funding
• Technical Resources
• Educational Resources
• Sample Forms and Letters
• More Info

Retroreflectivity Maintenance

Assessment Methods

The assessment methods require evaluation of individual signs within an agency’s jurisdiction. There are two basic assessment methods:

• Visual Nighttime Inspection Method
  • Calibration Signs Procedure (with checklist)
  • Consistent Parameters Procedure (with checklist)
  • Comparison Panels Procedure (with checklist)
• Measured Retroreflectivity Method