Tex. Transp. Code § 622.901
(b) The width limitation provided by Section 621.201 does not apply to:
(1) highway building or maintenance machinery that is traveling:
(2) a vehicle traveling during daylight on a public highway other than a highway that is part of the national system of interstate and defense highways or traveling for not more than 50 miles on a highway that is part of the national system of interstate and defense highways if the vehicle is:
(B) a vehicle on which a farm tractor, implement of husbandry, or equipment used in the harvesting and production of timber, other than a tractor, implement, or equipment being transported from one dealer to another, is being moved by the owner of the tractor, implement, or equipment or by an agent or employee of the owner:
(3) machinery that is used solely for drilling water wells, including machinery that is a unit or a unit mounted on a conventional vehicle or chassis, and that is traveling:
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.
Amended by Acts 2003, 78th Leg., ch. 491, Sec. 1, eff. Sept. 1, 2003.
Acts 2013, 83rd Leg., R.S., Ch. 161 (S.B. 1093), Sec. 20.025, eff. September 1, 2013.
Acts 2013, 83rd Leg., R.S., Ch. 1135 (H.B. 2741), Sec. 106, eff. September 1, 2013.
Acts 2015, 84th Leg., R.S., Ch. 78 (S.B. 971), Sec. 2, eff. September 1, 2015.
Acts 2015, 84th Leg., R.S., Ch. 1184 (S.B. 1171), Sec. 3, eff. June 19, 2015.