(a) A person may not operate or move a vehicle on a highway if:
(1) the vehicle’s size is larger than the applicable maximum size authorized for that vehicle by this subtitle;
(2) the vehicle’s single axle weight, tandem axle weight, or gross weight is greater than the applicable weight authorized for that vehicle by this subtitle; or
(3) the vehicle is not constructed or equipped as required by this subtitle.
(b) The owner of a vehicle the size of which or the weight, axle load, or wheel load of which is greater than the applicable maximum size, weight, or load authorized for that vehicle by this subtitle or a vehicle that is not constructed or equipped as required by this chapter may not cause or allow the vehicle to be operated or moved on a highway.

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Terms Used In Texas Transportation Code 621.502

  • Person: includes corporation, organization, government or governmental subdivision or agency, business trust, estate, trust, partnership, association, and any other legal entity. See Texas Government Code 311.005

(c) A person may not transport on a vehicle a load the size or weight of which is more than the applicable maximum size, weight, or load authorized for that vehicle by this subtitle.
(d) Intent to operate a vehicle at a weight that is heavier than the weight authorized by a permit issued under § 623.011 is presumed if:
(1) the vehicle is operated at a weight that is heavier than the applicable weight plus the tolerance allowance provided by § 623.011(a); and
(2) a permit to operate at that weight has not been issued for the vehicle.