Iowa Code Title VIII. Transportation [Chs. 306-330B] § 321.473. Limitations on trucks by local authorities

1. Local authorities with respect to highways under their jurisdiction may also, by ordinance or resolution, prohibit the operation of trucks or other commercial vehicles, or may impose limitations as to the weight thereof, on designated highways, which prohibitions and limitations shall be designated by appropriate signs placed on such highways.

2. Local authorities may issue special permits, during periods such restrictions are in effect, to permit limited operation of vehicles upon specified routes with loads in excess of any restrictions imposed under this section, but not in excess of load restrictions imposed by any other provision of this chapter, and such authorities shall issue such permits upon a showing that there is a need to move to market farm produce or to move to any farm, feeds or fuel for home heating purposes.