1. An axle may be divided into two or more parts, except that all parts in the same vertical transverse plane shall be considered as one axle.
2. The gross weight on any one axle of a vehicle, or of a combination of vehicles, operated on the highways of this state, shall not exceed twenty thousand pounds on an axle equipped with pneumatic tires, and shall not exceed fourteen thousand pounds on an axle equipped with solid rubber tires. The gross weight on any tandem axle of a vehicle, or any combination of vehicles, shall not exceed thirty-four thousand pounds on an axle equipped with pneumatic tires. This subsection does not apply to implements of husbandry.
3. Notwithstanding other provisions of this chapter to the contrary, indivisible loads operating under the permit requirements of sections 321E.7, 321E.8, 321E.9, and 321E.29A shall be allowed a maximum of twenty thousand pounds per axle.
4. Machinery defined in section 321.1, subsection 32, paragraph "f", shall be operated in compliance with this section. However, machinery used exclusively for mixing and dispensing nutrients to bovine animals at feedlots is not required to comply with this section until July 1, 1999.
[C24, 27, 31, 35, § 5065; C39, § 5035.12; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, § 321.463; 81 Acts, ch 110, § 1, ch 111]
89 Acts, ch 200, § 1, 2; 92 Acts, ch 1238, § 35; 94 Acts, ch 1199, §79; 95 Acts, ch 118, §26; 96 Acts, ch 1089, § 4; 97 Acts, ch 100, §5, 12; 97 Acts, ch 104, §22; 98 Acts, ch 1103, §2; 98 Acts, ch 1178, §6, 7
Referred to in § 312.2, 321.1, 321.452, 321.459, 321.473, 321E.1, 321E.7, 321E.8, 321E.9, 321E.9A, 321E.16, 321E.17, 321E.29, 321E.29A, 805.8(2v)
Applicability of 1997 maximum weight amendments to vehicles on urban and secondary roads; 97 Acts, ch 100, §12
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