Iowa Code § 321.328: Crossing at other than crosswalk.

1. Every pedestrian crossing a roadway at any point other than within a marked crosswalk or within an unmarked crosswalk at an intersection shall yield the right-of-way to all vehicles upon the roadway except that cities may restrict such a crossing by ordinance.

2. Any pedestrian crossing a roadway at a point where a pedestrian tunnel or overhead pedestrian crossing has been provided shall yield the right-of-way to all vehicles upon the roadway.

3. Where traffic-control signals are in operation at any place not an intersection pedestrians shall not cross at any place except in a marked crosswalk.