(a) This section applies only to a truck-tractor or commercial motor vehicle with a gross weight of more than 10,000 pounds that is used or is to be used in combination with a semitrailer that has a gross weight of more than 6,000 pounds.
(b) The fee for a registration year for registration of a truck-tractor or commercial motor vehicle is calculated by gross weight according to § 502.253.

(c) The fee for registration of a semitrailer used in the manner described by Subsection (a), regardless of the date the semitrailer is registered, is $15 for a registration year.
(d) A registration made under Subsection (c) is valid only when the semitrailer is used in the manner described by Subsection (a).
(e) For registration purposes, a semitrailer converted to a trailer by means of an auxiliary axle assembly retains its status as a semitrailer.
(f) A combination of vehicles may not be registered under this section for a combined gross weight of less than 18,000 pounds.
(g) This section does not apply to:
(1) a combination of vehicles that includes a vehicle that has a distinguishing license plate under § 502.146;
(2) a truck-tractor or commercial motor vehicle registered or to be registered with $5 distinguishing license plates for which the vehicle is eligible under this chapter;
(3) a truck-tractor or commercial motor vehicle used exclusively in combination with a semitrailer of the travel trailer type; or
(4) a vehicle registered or to be registered:
(A) with a temporary registration permit;
(B) under § 502.433; or
(C) under § 502.435.
(h) The department may adopt rules to administer this section.
(i) The department shall issue a license plate for a token trailer registered under this section that does not expire or require an annual registration insignia to be valid. The alphanumeric pattern for a license plate issued under this subsection may remain on a token trailer for as long as the registration of the token trailer is renewed or until the token trailer is removed from service or sold. The registration receipt required under § 621.002 is not required for a vehicle that displays a license plate issued under this subsection.
(j) A person may register a semitrailer under this section if the person:
(1) applies to the department for registration;
(2) provides proof of the person’s eligibility to register the vehicle under this subsection as required by the department; and
(3) pays a fee of $15, plus any applicable fee under § 502.401, for each year included in the registration period.