Tax Law, § 502
In the event that the maximum gross weight set forth in the permit is in excess of the legal limits provided in the Vehicle and Traffic Law, nevertheless the issuance of such a permit does not authorize a vehicle to carry weights in excess of those permitted by the Vehicle and Traffic Law. Accordingly, an operator of a motor vehicle may be guilty of a violation of the weight provisions of the Vehicle and Traffic Law and subject to the penalties therein imposed even though the highway use permit issued for such vehicle sets forth a maximum gross weight in excess of the legal limits.
N.Y. Comp. Codes R. & Regs. Tit. 20 § 472.5