Maintaining Retroreflectivity at Required Levels (road show)

Meets: W from 9:00 AM to 12 N

Registration is not allowed at this time.
Please contact our office for more information.

Support Person: Tech Transfer Registrar  Phone: 510-643-4393  Email:


This course will provide agencies and/or officials with the information and tools necessary to comply with the National Sign Retroreflectivity Standard of the California Manual on Uniform Traffic Control Devices, Section 2A.09.

Topics Include

  • The basic science of sign retroreflectivity
  • How the minimum levels of sign retroreflectivity were established
  • Identifying the existing signs in the field and documenting maintenance
  • Develop of a simple plan to meet the new inspection requirements

What You Will Learn

Students will learn how to comply with the State and Federal Mandate on Traffic Sign Retroreflectivity.

Who Should Attend

  • Engineering administrators
  • Traffic Engineers
  • Sign Maintenance Management
  • Personnel responsible for funding sign maintenance

David Royer

TE, CE, Consulting Traffic and Highway Engineer, Retired Principal Engineer, LADOT

David Royer is a licensed Civil Engineer and Traffic Engineer. He's been a valued instructor and course developer at Tech Transfer for 40 years. His teaching and development include the Work Zone Safety Program, Roadside Safety & Barrier Systems, and the Maintaining Retroreflectivity at Required Levels course. Mr. Royer also served as an LTAP Field Agent during the period that Tech Transfer served as the California LTAP Center. In 2018, he was the first to receive the Technology Transfer Program's Instructor of the Year award. He retired at the position of Principal Transportation Engineer from LADOT after 32 years of service, and for the past 23 years, he has been a consulting traffic and highway engineer. Because of his extensive experience and teaching in the field of work zone safety, he voluntarily represents Tech Transfer on the WATCH Manual Committee and on the National Committee on Uniform Traffic Control Devices (Part 6 of the MUTCD).


Email Information to Friend Print

powered by ACEweb from ACEware Systems, Inc.