In this chapter:
(1) “Commercial motor vehicle” means:
(A) a commercial motor vehicle as defined by 49 C.F.R. § 390.5, if operated interstate; or
(B) a commercial motor vehicle as defined by § 548.001, if operated intrastate.
(2) “Department” means the Department of Public Safety.
(3) “Director” means the public safety director.
(4) “Federal hazardous material regulation” means a federal regulation in 49 C.F.R. Parts 101-199.
(5) “Federal motor carrier safety regulation” means a federal regulation in Subtitle A, Title 49, or Subchapter B, Chapter III, Subtitle B, Title 49, Code of Federal Regulations.
(6) “Federal safety regulation” means a federal hazardous material regulation or a federal motor carrier safety regulation.
(7) “Port of entry” has the meaning assigned by § 621.001.