(a) Purpose. The purpose of this section is to implement requirements relating to transportation control measures (TCMs). These requirements address the roles and responsibilities of the metropolitan planning organizations (MPOs) and implementing transportation agencies in nonattainment and maintenance areas.(b) Applicability. This section applies to MPOs and agencies that implement TCMs in designated nonattainment or maintenance areas. The affected nonattainment and maintenance areas are listed in §101.1 of this title (relating to Definitions).(c) General. All TCMs shall be developed, coordinated, funded, approved, implemented, tracked, evaluated, and monitored in accordance with §114.260 of this title (relating to Transportation Conformity);