This bill amends the speed limit regulations for unpaved secondary roads under county jurisdiction in Iowa. It reduces the maximum speed limit from 55 miles per hour to 45 miles per hour for these roads, regardless of the time of day. The bill also updates the process by which county boards of supervisors can determine and declare reasonable speed limits based on engineering and traffic investigations, ensuring that appropriate signage is posted to inform drivers of any changes.

Additionally, the bill allows counties to use nonpermanent overlays or stickers, approved by the department of transportation, on existing speed limit signs to reflect the new speed limits until the signs can be replaced according to the county's replacement schedule. The penalties for exceeding the speed limit remain unchanged, with fines ranging from $30 for minor infractions to $135 plus additional charges for more significant violations, particularly in road work zones.

Statutes affected:
Introduced: 321.285