Ohio Rev. Code Ann. § 5577.043
(A) Notwithstanding sections 5577.02 and 5577.04 of the Revised Code, the following vehicles under the described conditions may exceed by no more than seven and one-half per cent the weight provisions of sections 5577.01 to 5577.09 of the Revised Code and no penalty prescribed in section 5577.99 of the Revised Code shall be imposed:
(1) A surface mining truck transporting minerals from the place where the minerals are loaded to any of the following:
(C) If any of the vehicles listed in division (A) of this section and operated under the conditions described in that division exceed the weight provisions of sections 5577.01 to 5577.09 of the Revised Code by more than the percentage allowance of either division (A) or (B) of this section, both of the following apply without regard to the allowance provided by division (A) or (B) of this section:
(D) Divisions (A) and (B) of this section do not apply to the operation of a vehicle listed in division (A) of this section on either of the following: