SF 506: Relating to raw farm products for purposes of increased gross weight for motor vehicles transporting such products on this state’s public highways

What it does

BACKGROUND. Current law prohibits a person from operating a motor truck, trailer, truck tractor, road tractor, or semitrailer having a gross weight that exceeds the vehicle’s registered gross weight by percent. An exception allows such a vehicle transporting certain loads associated with farming to operate on the public highways so long as the gross weight does not exceed the vehicle’s registered gross weight by percent. Loads subject to this exemption include raw farm products, fertilizers, raw dairy products, livestock, live poultry, and eggs.

Senate subcommittee · named January 15, 2026

• Sen. Dan Zumbach (R) · dan.zumbach@legis.iowa.gov
• Sen. Tom Shipley (R) · tom.shipley@legis.iowa.gov
• Sen. Thomas Townsend (D) · thomas.townsend@legis.iowa.gov

Lobbying · 9 for, 0 against

For: Agribusiness Association of Iowa; Iowa Cattlemen's Association; Iowa Corn Growers Association; Iowa Institute for Cooperatives; Iowa Pork Producers Association; Iowa Soybean Association; Iowa State Dairy Association; Iowa Turkey Federation; North Central Poultry Association

In plain words

1. February 11, 2025Filed in the Senate and sent to the Transportation committee · as SSB 1109
2. February 24, 2025Senate subcommittee named: Gruenhagen, Townsend and Zumbach · as SSB 1109
3. March 3, 2025Subcommittee recommended passing it with changes · as SSB 1109
4. March 3, 2025Approved by the Senate committee, and given a new number: SF 506 · as SSB 1109
5. March 4, 2025Filed in the Senate
6. March 4, 2025Approved by the Senate committee
7. June 16, 2025Sent to the Senate Transportation committee
8. January 15, 2026Senate subcommittee named: Zumbach, Shipley and Townsend
9. January 20, 2026Subcommittee recommended passing it
10. January 21, 2026Approved by the Senate committee