Tex. Transp. Code § 502.432
(a) The department shall provide for a monthly registration period for a truck-tractor or a commercial motor vehicle:
(d) For purposes of this section, "to transport a seasonal agricultural product" includes any transportation activity necessary for the production, harvest, or delivery of an agricultural product that is produced seasonally.
Transferred, redesignated and amended from Transportation Code, Section 502.1586 by Acts 2011, 82nd Leg., R.S., Ch. 1296 (H.B. 2357), Sec. 142, eff. January 1, 2012.