Flagger Program

New, exciting changes for CDOT's Flagger Program
C.R.S. 43-5-308 (2)(b)

The purpose of The Flagger Program is to provide certification to Local and Private Entities throughout Colorado to train any individual to become a Flagger. Flaggers are part of the line of defense between the traveling public and individuals working in work zones; they provide safety to all involved parties.

CDOT's Traffic and Safety Engineering Branch has been managing the program since September 2012. We're thankful for your cooperation as we were able to roll out this program to meet the standard of care we believe exists at the CDOT.

Please email us at [email protected] for more information.

Please send all COMPLIMENTS of Individual Flaggers and Certified Entities to the [email protected]

We WELCOME and WANT these compliments!! Click this link for Awesome Pictures 

In the unfortunate situation that you have a complaint, please contact us and we will do what is possible to rectify the issue.

Thank you to the many entities who have collaborated with us to make this program the best it can be!

If you are an Entity and need to change your status, contact us and we will discuss your case.  The lists provided are updated per records that have been submitted.  All care has been taken to make sure these are correct, but please reach out to us if there is an error. 

Information for your use

In order to become a certified Flagger, a person must contact a Certified Entity to take the required course, meeting all requirements, and pass the exam with an 85% or better.  Each Entity has their own policy for cost of training, scheduling, hiring, etc. Contact information is below, and is not necessarily indicative of exact location. Contact each Entity individually to discuss your case.

Online Training is accepted through Professional Traffic Graphics for certification and recertification. 

Flaggers INC is hosting online training for recertification. Please contact Flaggers INC. for policies on certification.

CIRSA is hosting online training. Please Contact them for more information.

Links to Certified Entity: Local and Private

  1. Do not send Certifying Entity Flagger applications with the Quality Assurance (QA). Email or mail the application separately.

  2. Wet signatures are required on all documentation requiring a signature. No electronic signatures will be accepted.
  3. Quality Assurance paperwork is the property of the Certified Entity. Original records shall stay with the Entity at any time of Proctor turnover. It is the Entity's responsibility to maintain paperwork if the Proctor or Designated Contact leave the position. The CDOT has a right to suspend or revoke authorization for failure to comply with requirements or submit the QA at the CDOT's request.

  4. Any Certified Entity can train any external Customers seeking Flagger training; including Temporaries, Non-Employees, and other Proctors. A Certified Entity cannot train it's own Proctors.  Test three is no longer allowed to be used for in-house testing, however should be used in circulation with test one and two.  All Flagger certification cards for Proctors and Individuals are to be issued within twenty-four (24) hours of passing the test. 

The most updated information will be communicated on this page. Please contact us if there are discrepancies, or if this information is unclear. These links are updated periodically. If a link is not working, please wait a few moments or email us to obtain the information.

CDOT Flagger examinations for Individuals and Proctors are closed book exams only—no exceptions. The passing score is 85% for both Individuals and Proctors. CDOT will be releasing the updated manual very soon which highlights this change.

To qualify as a Traffic Control Supervisor (TCS) within Colorado, a Person must have 2,000 verifiable hours of field experience. This does not have to be solely as a Flagger.  

If you need to obtain your Flagger certification or re-new your certification, Certified Entity information is available. Contact the branch to obtain a complete list of Certified Entities. This list is continuously being updated. If the links are not working, please contact us.

Crossing Guard Training is not the same as Flagger training and certification. Learn more on CDOT's  Safe Routes to School information page.

For Individuals & Entities

In order to become a certified Flagger, a person must contact a Certified Entity and take the required course and pass the exam. Flagger Certification cards are to be issued within 24 hours after passing the exam. Feel free to familiarize yourself with the manual; however, you shall take the course to get certified.

Guidelines for Entities

Email or mail original application only.

  • All applications must be accompanied by the Proctor's Flagger or TCS certification.
  • All Flagger Certifying Entities must use this application.
  • Re-apply for certification a minimum of 45 days before the current expiration date.
  • QA is due yearly on your expiration anniversary month.
  • All QA documents requiring a signature need be wet signatures. No electronic signatures will be accepted.


  • All Proctors must be certified as Flaggers or TCSs before training an individual.
  • All applications must be accompanied by proof that the Proctor has been trained. Without this, the application will not be considered.
  • If your Entity has an application on file with the CDOT, please complete the Entity Change Form to highlight any changes.
  • To obtain testing materials, your Entity must be on file, with current authorization.

Contact the branch if you are in need of updated Flagger cards. We only use the October 2014 version.


Certification cards are the sole property of the CDOT, and are not to be duplicated or used as a template. This is grounds for revocation. If your entity is in need of more certification cards, contact the branch via email or phone.

All certification cards issued to Flaggers are valid until the noted expiration date on the card—even if the Flagger is no longer working with or for the issuing entity. The card is transferable between Entities and must be recognized as valid.

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