t.  Added by Acts 0000, 00th Leg., R.S., Ch. 000 (S.B. 0), Sec. 0, eff. June 0, 0000.   Sec. 000.000.  LIMITATION ON PARTICIPATION BY TEXAS DEPARTMENT OF TRANSPORTATION.  Notwithstanding Section 000.000(b), the Texas Department of Transportation is not required to use any existing system of dynamic message signs in a statewide alert system created under this subchapter if th