Texas Health and Safety Code - HEALTH & SAFETY § 382.204. Remote Sensing Program Component

(a) The commission and the Department of Public Safety of the State of Texas jointly shall develop a program component for enforcing vehicle emissions testing and standards by use of remote or automatic emissions detection and analysis equipment.

(b) The program component may be employed in any county designated as a nonattainment area within the meaning of Section 107(d) of the Clean Air Act (42 U.S.C. Section 7407) and its subsequent amendments, in any affected county, or in any county adjacent to an affected county.

(c) If a vehicle registered in a county adjacent to an affected county is detected under the program component authorized by this section as operating and exceeding acceptable emissions limitations in an affected county, the department shall provide notice of the violation under Section 548.306, Transportation Code.