(1) No person, whether operating under a permit or otherwise, shall operate a vehicle in violation of special weight limitations imposed by state or local authorities on particular highways, highway structures or portions of highways when signs have been erected as required by s. 349.16 (2) giving notice of such weight limitations, except when the vehicle is being operated under a permit expressly authorizing such weight limitations to be exceeded.
(2) Whenever the operator of a vehicle is ordered by the officer or agency in charge of maintenance or by a traffic officer to suspend operation of such vehicle because of the damage such vehicle is causing or likely to cause to the highway or the public investment therein, the operator shall forthwith comply with such order.
(3) During an energy emergency, after consultation with the department of administration, the department may waive the divisible load limitation of s. 348.25 (4) and authorize for a period not to exceed 30 days the operation of overweight vehicles having a registered gross weight of 50,000 pounds or more and carrying energy resources or fuel or milk commodities designated by the governor or a designee, regardless of the highways involved, to conserve energy. Such authorization may only allow weights not more than 10% greater than the gross axle and axle combination weight limitations, and not more than 15% greater than the gross vehicle weight limitations under ss. 348.15 and 348.16 . Nothing in this subsection shall be construed to permit the department to waive the requirements of ss. 348.05 to 348.07 . This subsection does not apply to vehicles on highways designated as parts of the national system of interstate and defense highways, except for that portion of USH 51 between Wausau and STH 78 and that portion of STH 78 between USH 51 and the I 90/94 interchange near Portage upon their federal designation as I 39.
(4)
(a) If the secretary of agriculture, trade and consumer protection determines that an agricultural emergency exists with respect to the harvest of a particular crop, the secretary of transportation may authorize the movement of vehicles or combinations of vehicles that exceed the weight limitations under s. 348.15 or 348.16 by not more than 15% of the applicable weight limitations. The authorization is limited to vehicles or combinations of vehicles that are transporting crops from field to storage or processing facilities and that have a registered gross weight of 50,000 pounds or more or are described in s. 340.01 (24) (b) . This paragraph does not apply to vehicles or combinations of vehicles on highways designated as parts of the national system of interstate and defense highways, except for that portion of USH 51 between Wausau and STH 78 and that portion of STH 78 between USH 51 and the I 90/94 interchange near Portage upon their federal designation as I 39, and to implements of husbandry.
(b) The secretary of agriculture, trade and consumer protection shall specify in writing the factors which resulted in the determination under par. (a) that an agricultural emergency exists. The factors shall include but not be limited to:
1. The extent of the uncompleted harvest of the crop involved.
2. The lateness of the harvest season for the crops involved.
3. The weather.
(c) Nothing in this subsection shall be construed to permit the department to waive the requirements of ss. 348.05 to 348.07 .
(d) The secretary of transportation may limit the application of authorizations under this subsection to specific areas of the state, to specific crops, or to specific highways. An authorization under this subsection is valid for up to 90 days, as determined by the secretary of transportation.