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 closed book examination with a score of 85% or better.

Certification is valid until the noted expiration date on the Colorado Flagger Card. 

If you have a Flagger certification from another state, your certification is valid for use in Colorado if

However, it is highly recommended that you obtain a Colorado Flagger certification.

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

Guidelines for Entities

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

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 trainer or renew an authorization, a person or company shall:

  • Possess a valid Secretary of State ID Number,
  • Submit an Application Request to Become an Authorized Flagger Certification Training Entity to CDOT, AND
    (Note: Please be sure to submit all proctor qualifications with the application to avoid additional delays.)
  • If requesting for renewal, submit all requirements prior to the Entity Expiration date.
  • All applications, annual quality assurance documentation, and recertification applications must include a primary mailing address, working email address, and working business phone number.
  • All submitted documentation must be in a PDF format.

In addition, authorized entities must complete an annual quality assurance to maintain eligibility. A copy of the quality assurance shall be submitted to CDOT.

Guidelines for Proctors

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

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

In order to become a qualified Flagger certification training proctor, you must complete training with an authorized entity1 and meet one of the following requirements:

  • 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 a proctor 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 a proctor 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 proctor certification expiration.

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