321E.25 Use of interstate road system. Use of the national system of interstate and defense highways under the provisions of this chapter shall be restricted by regulation and other appropriate action of the department in such a manner as to not be in conflict with the applicable provisions of 23 U.S.C. §127. [C71, 73, 75, 77, 79, 81, §321E.25] 2013 Acts, ch 49, §20
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