The load upon any vehicle operated alone, or the load upon the front vehicle of a combination of vehicles, shall not extend more than three feet beyond the front wheels of such vehicle or the front bumper of such vehicle if it is equipped with such a bumper.
Iowa Code § 321.458
Referred to in §321E.2, 805.8A(12)(c)
For applicable scheduled fine, see §805.8A, subsection 12, paragraph c