Amend CSHB 2912 by adding new sections to the bill, numbered appropriately, to read as follows: SECTION __. Subchapter B, Chapter 382, Health and Safety Code, is amended by adding Section 382.0125 to read as follows: Sec. 382.0125. LIMITATIONS ON CONTENT OF FEDERAL AIR QUALITY IMPLEMENTATION PLAN. The commission may not include in an implementation plan approved or adopted or to be approved or adopted by rule of the United States Environmental Protection Agency under Title I of the federal Clean Air Act (42 U.S.C. Sections 7401-7515), as amended: (1) the imposition of a speed limit on a state or federal highway of less than 65 miles per hour; or (2) the reduction of the speed limit on any other road. SECTION __. The changes in law made by Section 382.0125, Health and Safety Code, as added by this Act, apply to any implementation plan for purposes of compliance with Title I of the federal Clean Air Act (42 U.S.C. Sections 7401-7515), as amended. If, at the time that section takes effect, the Texas Natural Resource Conservation Commission has a proposed or approved implementation plan, the commission as soon as is practicable shall take any steps necessary to conform the plan to the requirements of Section 382.0125, Health and Safety Code, as added by this Act.