Texas Transportation Code - TRANSP § 201.619. Cooperative Planning With Counties

(a) In this section, “corridor” means a geographical band that follows a general directional flow connecting major sources of trips.

(b) The department and a county may enter into an agreement that identifies future transportation corridors within the county in accordance with this subsection.  The corridors identified in the agreement must be derived from existing transportation plans adopted by the department or commission, the county, or a metropolitan planning organization.

(c) The department shall publish in the Texas Register and in a newspaper of general circulation in the county with which the department has entered into an agreement under Subsection (b) a notice that states that the department and the county have entered into the agreement and that copies of the agreement and all plans referred to by the agreement are available at one or more designated department offices.