The Technical Advisory Committee (TAC) is a cross section of individuals with knowledge and expertise in various transportation fields. The TAC's purpose is to provide professional opinions and technical expertise to the Policy Committee for the MPO's activities. All official action of adopting policies, endorsing the UPWP, approving the MTP, and adopting the TIP resides with the Policy Committee. The Policy Committee may direct the TAC to present alternatives for its consideration, with accompanying recommendations and supporting rationale.