Sec.
A548.052.VEHICLES NOT SUBJECT TO INSPECTION.A This
chapter does not apply to:
(1)a trailer, semitrailer, pole trailer, or mobile
home moving under or bearing a current factory-delivery license
plate or current in-transit license plate;
(2)a vehicle moving under or bearing a paper dealer
in-transit tag, machinery license, disaster license, parade
license, prorate tab, one-trip permit, antique license, temporary
24-hour permit, or permit license;
(3)a trailer, semitrailer, pole trailer, or mobile
home having an actual gross weight or registered gross weight of
4,500 pounds or less;
(4)farm machinery, road-building equipment, a farm
trailer, or a vehicle required to display a slow-moving-vehicle
emblem under Section 547.703;
(5)a former military vehicle, as defined by Section
502.275;
(6)a vehicle qualified for a tax exemption under
Section 152.092, Tax Code; or
(7)a vehicle for which a certificate of title has been
issued but that is not required to be registered.
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995. Amended
by Acts 1997, 75th Leg., ch. 165, Sec. 30.121(a), eff. Sept. 1,
1997; Acts 1999, 76th Leg., ch. 963, Sec. 1, eff. June 18, 1999;
Acts 1999, 76th Leg., ch. 1423, Sec. 7, eff. Sept. 1, 1999; Acts
2001, 77th Leg., ch. 1420, Sec. 19.006, eff. Sept. 1, 2001.
From the code, but I'm with others, I've never seen it inforced.