Governing Law and Regulations
Iowa Department of Transportation (Iowa DOT)
Iowa Department of Public Safety (DPS)
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Iowa has adopted the federal hazardous materials transportation regulations as they apply to motor carriers with an additional requirement that carriers declare their knowledge of federal regulations. See the national section HAZARDOUS MATERIALS TRANSPORTERS for more information.
• Administration and enforcement. Iowa DOT and DPS enforce the hazardous materials transportation regulations in Iowa.
At the time of application for authority to operate in Iowa or on receipt of their Iowa registration, operators of commercial vehicles who are subject to the regulations adopted in this rule must declare knowledge of the federal Motor Carrier Safety Regulations and federal Hazardous Materials Regulations adopted in this rule.