Flagger Program

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 instructors cannot be trained or certified by their own entity.

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, unless exempted by CDOT, shall issue Flagger certification cards within 48 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 a certified Flagger Training Entity?

In order to become a certified Flagger Training Entity or renew an authorization, a government agency, person, or company shall:

Guidelines for Flagger Instructors

Updated 9/15/2022

What are the requirements to become a CDOT approved Flagger Instructor?

In order to become a CDOT approved Flagger Instructor, you must obtain a CDOT approved Flagger Instructor Certification. At this time, the Flagger Instructor Training (FIT) course and certification provided by the American Traffic Safety Services Association (ATSSA) is the only CDOT approved Flagger Instructor Certification. A CDOT Flagger Instructor Training course and certification are in development, with anticipated completion in the first quarter of 2023.

See the 9-15-2022 Industry Memo above for additional information regarding flagger instructor requirements.