Flagger Program

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About the Program

CDOT is always striving to improve work zone safety. The safe and effective use of flaggers plays a vital role in protecting the traveling public and workers from the dangers and hazards that are present on roadway construction and maintenance projects. The purpose of the Flagger Program, in accordance with C.R.S. 43-5-308(2)(b), is to provide standardized training and certification to all persons flagging in State of Colorado.

CDOT Flagger Materials

How do I become a certified Flagger?

In order to obtain or renew your Colorado Flagger certification, you must fulfill the following requirements:

  1. In accordance with C.R.S. 43-5-308(3)(a), a Flagger must be eighteen (18) years of age or older;
  2. In accordance with C.R.S. 43-5-308(2)(a) and 43-5-308(3)(b), a Flagger must be trained by an entity authorized by CDOT prior to providing temporary traffic control or direction within any highway, road, or street maintenance or construction work area; and
    Find a CDOT authorized Flagger certification entity near me!
  3. Must pass a practical and written examination with a score of 85% or better. The written exam can be open-book and open-notes.

Flagger certifications in and for Colorado are valid for two years. Flagger certifications from ATSSA and NSC are valid in Colorado but are only valid for two years from date of issuance.

As of September 20, 2018, flagger training instructors cannot train and certify themselves as a flagger.

Guidelines for Entities

CDOT Not Certifying New Entities until Spring 2022 - Exception per Industry Memo - January 2022

In accordance with C.R.S. 43-5-308(2)(b), the Colorado Department of Transportation shall authorize public and private entities to conduct Flagger certification training and shall develop and provide, at cost, examination and training materials that authorized entities must use in conducting Flagger certification.

All Flagger certification training courses shall:

All authorized entities, with the exception of of the Department of Corrections, shall issue Flagger certification cards within 24 hours to all individuals who have passed the written examination.

Please contact us for Flagger examinations and certification cards.

Certification cards are the sole property of CDOT and shall not be duplicated or used as a template. Violation is grounds for revocation. 

How do I become an authorized Flagger certification training entity?

In order to become an authorized Flagger certification training entity or renew an authorization, a government agency, person, or company shall:

Guidelines for Flagger Instructors

CDOT Not Certifying New Instructors until Spring 2022 - Exception per Industry Memo

What are the requirements to become a qualified Flagger certification training Instructor?

In order to become a qualified Flagger certification training Instructor, you must complete training with an authorized entity1 and meet one of the following requirements, until current certification expires. All current certifications expiring in 2022 are extended to 12/31/2022. Beginning on 1/1/2023, all expiring Flagger Instructor certifications will require CDOT-approved Flagger Instructor Certification Training, per 1/24/2022 Industry Memo.

  • I have a valid Traffic Control Supervisor (TCS) certification from either Colorado Contractor's Association (CCA), American Traffic Safety Services Association (ATSSA), National Safety Council (NSC), or the Western Colorado Contractor's Association (WCCA).
  • A valid Flagger Instructor Trainer/Flagger Trainer certification from any CDOT Certified Entity listed here:
  • A valid ATSSA or NSC Traffic Control Technician Certification and a valid CDOT, ATSSA, or NSC Flagger Certification.
    • They have been an instructor for a Certified Entity for at least one (1) year and have conducted two (2) training courses prior to 8/30/2019.
  • A valid Colorado Flagger certification with the following requirements:
    • They have flagged for two (2) consecutive seasons (March - October at 20 hours per week) and have conducted two (2) training courses prior to 8/30/2019. Flagging experience must be verified at 1,280 hours.
    • Documented experience as an instructor for a Certified Entity for at least two (2) years and have conducted four (4) training courses prior to 8/30/2019.
  • Re-certification criteria must also be met and submitted prior to the instructor certification expiration.

As of September 20, 2018, authorized entities are no longer allowed to train and certify their own instructors. Find a CDOT authorized training entity.