Texas Transportation Code - TRANSP § 502.434. Farm Vehicles: Excess Weight

(a) The owner of a registered commercial motor vehicle, truck-tractor, trailer, or semitrailer may obtain a short-term permit to haul loads of a weight more than that for which the vehicle is registered by paying an additional fee before the additional weight is hauled to transport:

(a-1) A permit may not be issued under this section unless the vehicle's owner provides a registration number issued by the comptroller under Section 151.1551, Tax Code. The comptroller shall allow access to the online system established under Section 151.1551(l), Tax Code, to verify a registration number provided under this subsection. This subsection does not apply to a permit issued to a retail dealer of tools or equipment that is transporting the tools or equipment from the place of purchase or storage to the customer's farm or ranch.

(b) A permit may not be issued under this section for a period that is less than one month or that:

(c) A permit issued under this section for a quarter must be for a calendar quarter.

(d) The fee for a permit under this section is a percentage of the difference between the registration fee otherwise prescribed for the vehicle and the annual fee for the desired weight, as follows:

(e) The department shall design, prescribe, and furnish a sticker, plate, or other means of indicating the additional weight and the registration period for each vehicle registered under this section.