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 standardize 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.

Guidelines for Entities

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:

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

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.
  • I have a valid Technician certification, a minimum of one (1) year of proctor experience under an authorized entity, AND have conducted at least two (2) training courses prior to August 30, 2019.
  • I have a valid Flagger certification, have performed flagger duties for at least two (2) consecutive seasons (minimum of 1280 hours), AND conducted at least two (2) training courses prior to August 30, 2019.
  • I have a valid Flagger certification, a minimum of two (2) years of proctor experience under an authorized entity, AND have conducted at least four (4) training courses prior to August 30, 2019.

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