TRAC operates on an annual application cycle. At the completion of the application process TRAC members vote on the approval of the Major New Construction Program List of funding commitments for preliminary engineering, detailed design, right-of-way and project construction. Projects receiving funding commitments are placed into three "tiers" based upon the level of project development:
Tier I - The group of projects recommended for construction during the upcoming four-year construction period.
Tier II - The group of projects recommended for additional environmental, design or right-of-way development activities necessary before the projects would be available for construction.
Tier III - The group of projects with previous phases funded for construction in Tier I. Projects placed in Tier III status are part of a long range funding plan to advance multiple phase projects.