Iowa transportation laws

What Iowa has enacted on transportation, what each law requires, and what the bills still moving would do. Iowa is one of 41 states that enacted a transportation law in the 2025 and 2026 sessions.

Bills in scope
34bills in scope
Past committee
21past committee
Most recent action
27 May 2026most recent action

Transportation laws enacted in Iowa

4 transportation laws enacted in the Iowa Legislature in the 2025 and 2026 sessions, newest first. Each links to the legislature's own page.

  • SF 2426A bill for an act relating to sufficient English language proficiency requirements for commercial drivers, providing penalties, and including applicability provisions.Enacted 27 May 2026

    What it requires: The department of transportation must examine English language proficiency of applicants for commercial driver's licenses and commercial learner's permits and deny issuance or renewal unless applicants demonstrate proficiency meeting 49 C.F.R. §391.11(b)(2). Persons must not operate commercial motor vehicles without sufficient English proficiency. Commercial motor carriers must not employ commercial drivers lacking sufficient English proficiency.

    Motor carriers and commercial drivers

  • HF 979A bill for an act relating to vehicles operating with a permit for excessive size or weight, and providing fees.Enacted 6 June 2025

    Truck size, weight and road use

  • SF 153A bill for an act relating to driver age qualifications for certain commercial motor vehicle drivers operating solely intrastate to transport hazardous material.Took effect 1 July 2025

    What it requires: Drivers for private and for-hire motor carriers operating solely intrastate must be at least eighteen years of age, except when transporting hazardous material in quantities requiring placarding, which remains subject to other age requirements. Retail dealers of fertilizers, petroleum products, and pesticides and their employees are exempt from age requirements while delivering these products to farm customers within one hundred miles of their retail place of business.

    Motor carriers and commercial drivers, Hazardous materials transport

  • SF 377A bill for an act prohibiting the consideration of the deployment, implementation, or use of a motor carrier safety improvement when determining a person’s employment status.Enacted 28 March 2025

    Motor carriers and commercial drivers

Transportation in Iowa, by topic

Transportation bills in Iowa

The bills not yet law, furthest along first, with what each would do.

4Enacted

17Past committee

13Introduced or inactive

34 bills in scope

Past committee

17

HSB 598A bill for an act relating to the operation of driverless-capable vehicles, including associated civil and criminal liability, and making penalties applicable.Passed committee

What it would do: Prohibits driverless-capable vehicles transporting hazardous material from operating without a conventional human driver. Makes vehicle owners liable for personal injury, death, property damage, and traffic violations while the automated driving system is engaged.

HSB 699A bill for an act relating to sufficient English language proficiency requirements for commercial drivers, and providing penalties.Passed committee

What it would do: Requires the Iowa Department of Transportation to examine English language proficiency of commercial driver's license applicants and prohibits issuance unless proficiency is demonstrated. Prohibits commercial motor carriers from employing drivers lacking English proficiency and imposes civil penalties of $3,000 to $10,000 for violations.

SF 2173A bill for an act relating to sufficient English language proficiency requirements for commercial drivers, and providing penalties.Passed committee

What it would do: Requires the Iowa Department of Transportation to examine English language proficiency for commercial driver's license applicants and prohibits issuance without demonstrated proficiency. Imposes civil penalties on carriers employing non-proficient drivers and on drivers operating commercial vehicles without sufficient English proficiency.

HF 2375A bill for an act relating to conventional human drivers physically present in certain driverless-capable vehicles, and making penalties applicable. Effective date: 07/01/2026.Passed committee

What it would do: Requires a conventional human driver to be physically present in driverless-capable vehicles operating for commercial purposes, with ability to monitor and manually intervene, and holding required driver's license and endorsements.

HF 529A bill for an act relating to the maximum weight of vehicles powered primarily by natural gas or electric battery, and making penalties applicable.Passed committee

What it would do: Allows motor vehicles powered primarily by natural gas or electric battery to exceed applicable maximum gross weight limits up to 82,000 pounds, with excess weight equal to the difference between the alternative fuel system and a comparable diesel fuel tank and system.

SF 384A bill for an act relating to notices required for the closure of railway crossings for repairs or upgrades, and providing penalties.Passed chamber

What it would do: Requires railway corporations to notify the governmental entity with jurisdiction over a crossing at least 30 days before closing it for repairs or upgrades, unless the closure could not reasonably be anticipated or is an emergency, and to provide an estimated completion date and updates if delayed. Violations are subject to a schedule one penalty.

HF 494A bill for an act relating to the operation of railroad trains by a crew of two or more persons, and providing penalties.Passed committee

What it would do: Requires class I and class II rail carriers to operate locomotives and railroad trains with a crew of at least two qualified railroad employees. Establishes penalties of schedule three for first offense and schedule five for subsequent offenses within three years.

SCR 2A concurrent resolution urging the members of Congress to amend federal law to increase the maximum gross weight allowed for motor vehicles operated on the interstate road system in Iowa and bordering states.Passed committee

What it would do: Urges Congress to amend federal law to increase the maximum gross weight limit from 80,000 pounds to 96,000 pounds for commercial motor vehicles with seven axles on interstate roads in Iowa and bordering states.

SF 390A bill for an act relating to vehicles operating with a permit for excessive size or weight, and providing fees.Passed committee

What it would do: Modifies all-systems permit rules for oversize/overweight vehicles to allow travel on primary and secondary roads subject to local authority review, increases allowable weight variance to 12.5 percent, removes raw forest product requirement for international containers, and establishes four dollar per ton single-trip registration fees.

HSB 169A bill for an act prohibiting the consideration of the deployment, implementation, or use of a motor carrier safety improvement when determining a person’s employment status.Passed committee

What it would do: Prohibits considering a motor carrier's deployment, implementation, or use of safety improvements when determining whether a person is an employee, independent contractor, or jointly employed employee under any state law.

HF 7A bill for an act providing for the regulation of delivery network companies and drivers, making penalties applicable, and including effective date provisions.Passed committee

What it would do: Regulates delivery network companies and drivers by requiring financial liability insurance coverage of at least $50,000/$100,000/$25,000 during delivery periods, mandating written disclosures to drivers, and allowing personal auto insurers to exclude coverage during delivery activities.

HSB 134A bill for an act relating to the maximum weight of vehicles powered primarily by natural gas or electric battery, and making penalties applicable.Passed committee

What it would do: Allows motor vehicles powered primarily by natural gas or electric battery to exceed applicable maximum gross weight limits up to 82,000 pounds, with the excess weight equal to the difference between the alternative fuel system and a comparable diesel fuel system.

HSB 136A bill for an act relating to driver age qualifications for certain commercial motor vehicle drivers operating solely intrastate to transport hazardous material.Passed committee

What it would do: Removes the age qualification exemption for drivers transporting placarded hazardous materials in intrastate commerce, making federal age requirements apply. Also removes the exemption for retail dealers of fertilizers, petroleum products, and pesticides delivering within 100 miles of their business.

SF 24A bill for an act relating to the closure of railway crossings for repairs or upgrades, and providing penalties.Passed committee

What it would do: Reduces the maximum closure period for railway crossing repairs from 30 to 20 consecutive days, requires railroad corporations to notify county boards or city councils before closure, allows extensions of up to 20 additional days with approval, and increases penalties to a schedule four penalty for each day of unauthorized closure.

SSB 1107A bill for an act prohibiting the consideration of the deployment, implementation, or use of a motor carrier safety improvement when determining a person’s employment status.Passed committee

What it would do: Prohibits considering a motor carrier's deployment, implementation, or use of safety improvements when determining whether a person is an employee, independent contractor, or jointly employed employee under Iowa state law.

SF 40A bill for an act requiring the installation and maintenance of train defect detectors on railway branch lines, and providing penalties.Passed committee

What it would do: Requires railroad companies to install and maintain at least one defect detector on every railway branch line they operate, with additional detectors every 15 miles on longer lines. Imposes schedule five penalties for non-compliance or detector failures.

SSB 1015A bill for an act relating to driver age qualifications for certain commercial motor vehicle drivers operating solely intrastate to transport hazardous material.Passed committee

What it would do: Removes the age exemption for intrastate commercial motor vehicle drivers transporting hazardous materials requiring placarding, making the minimum age 21 instead of 18 for such operations.

Introduced or inactive

8 of 13 shown

SF 2167A bill for an act relating to human trafficking prevention training for persons applying for certain commercial driver’s licenses.Dead

What it would do: Requires applicants for class A, B, or C commercial driver's licenses to certify completion of approved human trafficking prevention training. Requires commercial driver training courses to include at least 30 minutes of such training in English.

HF 2673A bill for an act relating to the operation of driverless-capable vehicles transporting hazardous materials, and making penalties applicable.In committee

What it would do: Prohibits driverless-capable vehicles transporting hazardous material from operating without a conventional human driver physically present, while allowing other driverless-capable vehicles to operate under specified conditions. Violations constitute simple misdemeanor offenses.

HF 2477A bill for an act relating to English language proficiency requirements for commercial drivers and commercial carriers, providing penalties, and making penalties applicable.In committee

What it would do: Requires commercial drivers to demonstrate English language proficiency and authorizes state patrol to conduct assessments during inspections. Imposes $100,000 civil penalties on carriers employing non-compliant drivers and creates a private right of action for persons injured by violations.

HF 2100A bill for an act prohibiting the use of a language other than English for commercial driver’s license examinations.In committee

What it would do: Prohibits the department of transportation, third-party test examiners, and third-party testers from using any language other than English to examine applicants for commercial driver's licenses.

HF 2101A bill for an act prohibiting the use of a language other than English for class C commercial driver’s license examinations.In committee

What it would do: Prohibits the department of transportation, third-party test examiners, and third-party testers from using any language other than English when examining applicants for class C commercial driver's licenses.

SF 2042A bill for an act relating to trains idling near residential zones, and making penalties applicable.In committee

What it would do: Prohibits railway corporations from leaving stationary railroad train engines running for more than one hour if the train is within one-half mile of a residential zone in a city. Violations result in fines of $500 to $5,000 per violation.

HF 545A bill for an act providing for the regulation of delivery network companies and drivers, making penalties applicable, and including effective date provisions.In committee

What it would do: Regulates delivery network companies and drivers by requiring financial liability insurance coverage of at least $50,000/$100,000/$25,000 during delivery service periods, mandating disclosure of insurance terms to drivers, and establishing that drivers are independent contractors exempt from motor carrier regulations.

HF 527A bill for an act relating to driver age qualifications for certain commercial motor vehicle drivers operating solely intrastate to transport hazardous material.Dead

What it would do: Removes the age exemption for intrastate hazardous material drivers, making DPS driver age qualification rules apply to all commercial motor vehicle drivers transporting placarded hazardous materials. Eliminates the exemption for retail fertilizer, petroleum, and pesticide dealers delivering within 100 miles of their business.

Showing the 25 furthest along of 30. Subscribers see all of them, filtered and searchable. Bill titles link to the Iowa Legislature's own page.

What LawSignals covers

What counts as transportation legislation

In scope: Motor carriers and commercial drivers; truck size, weight and road use; truck and fleet emissions; hazardous materials transport; freight rail; ports, maritime and freight corridors; warehouses and delivery; and autonomous trucks and delivery devices.

Questions

Does Iowa have a transportation law?

Yes. Iowa enacted 4 transportation laws in the 2025 and 2026 sessions, among them SF 2426, HF 979 and SF 153. Each is listed on this page with what it requires.

When do Iowa's transportation laws take effect?

SF 153 on 1 July 2025. The others have no single date in their text.

Which transportation bills are moving in Iowa?

17 bills not yet law have passed a committee or a chamber, the furthest along HSB 598 (passed committee), HSB 699 (passed committee) and SF 2173 (passed committee).

What does Iowa legislate on most in transportation?

Motor carriers and commercial drivers (14 bills), Freight rail (8 bills) and Truck size, weight and road use (7 bills).

Are these summaries reviewed by a lawyer?

No. Which bills count as Transportation bills, and the line on what each law requires or each bill would do, are drafted by software from the bill's own text and not reviewed by an attorney. Every bill links to the legislature's own record: read the text before relying on it. The list covers bills from the 2025 and 2026 sessions.

Know when Iowa's transportation law changes

An alert when a bill moves, and one report a month on what changed in every state and Congress.