TCS stands for Traffic Control Supervisor.

The TCS ensures that the traffic control measures shown on the approved traffic control plans are properly implemented, operating, and documented on the project. The contractor’s TCS may not be required full time on a given project, but is required to perform all duties required by the specifications. The TCS is responsible to be on the project whenever traffic control labor is being utilized, or less frequently if authorized by the engineer.

TCT is a Traffic Control Technician.

The TCT is an apprentice position, indicating an individual who has not obtained enough hours and/or experience to be a TCS but has passed the Traffic Control Supervisors Course. The TCT can perform some of the duties of the TCS under the TCS’s supervision. (Note: The TCT is not a recognized certification in Washington; Idaho offers a separate course for a TCT.)

Washington only accepts a Washington State card at this time. Oregon only accepts an Oregon State card at this time.

Idaho will accept both Washington and Oregon TCS cards; however, the TCS is responsible for reviewing Idaho standards and laws.

Washington and Idaho certifications are valid for four years. Oregon certification is valid for three years.

Recertification is accomplished by successfully completing a one-day class and a score of 80% or better on the recertification exam. Evergreen Safety Council regularly offers one-day recertification classes.

To qualify for the recertification course you must submit the following information:

1. A current state-approved Flagger Certification card.

2. A copy of your current TCS or TCT certificate.

If your Oregon or Idaho TCS card expires, you have 60 days to take the one-day recertification. If your Washington TCS card expires, you have 180 days to take the one-day recertification. If your card is expired, you cannot work as a Traffic Control Supervisor.