GHSA maintains data on state laws surrounding a number of highway safety issues. Below is information regarding laws in the state of Iowa. For more information, consult the State Highway Safety Office.

  • Alcohol Impaired Driving


    Increased Penalty for High BAC Administrative License Suspension on First Offense Limited Driving Privileges During Suspension Vehicle and License Plate Sanctions
    .15 180 days After 30 days  

    Ignition Interlocks

    Mandatory for all convictions.


    Open Container Laws Repeat Offender Laws Alcohol Exclusion Laws Limiting Treatment
    Yes Yes No


  • Child Passenger Safety

    Child Restraint Required

    Under 1 yrs and under 20 lbs in rear-facing child seat

    1-5 yrs in child restraint

    Adult Safety Belt Permissible

    6-17 yrs

    Maximum Fine for 1st Offense

    $195 (including court costs)

  • Distracted Driving

    Hand-Held Ban?


    All Cell Phone Ban?

    School Bus Drivers


    Novice Drivers

    Drivers with restricted or intermediate license. Primary law.

    Text Messaging Ban?

    All drivers. Primary law.

  • Drug Impaired Driving

    DUID Zero Tolerance or Per se Laws for Some Drugs

    • Zero tolerance for some drugs

    Marijuana-Specific Laws

    • Possession and Use: Illegal
    • Impaired Driving: Zero tolerance for THC
  • Mature Drivers

    Length of Regular Renewal Cycle

    5 years

    Provisions for Mature Drivers

    70 and over: renewal every 2 years


  • Motorcyclists

    Universal helmet law repealed 1976.

  • Seat Belts

    Type of Law


    Who Is Covered?

    All riders

    In What Seat?


    Maximum Fine for 1st Offense

    $127.50 (including court costs)

  • Sobriety Checkpoints

    Checkpoints are not conducted. They are not permitted; a statute authorizing roadblock controls does not authorize sobriety checkpoints.

  • Speed and Red Light Cameras

    Speed Cameras

    No state law, but programs operating under local ordinance

    Red Light Cameras

    No state law, but programs operating under local ordinance

  • Speeding and Aggressive Driving

    Rural Interstates

    Cars (MPH) Trucks (MPH)
    70 70

    Urban Interstates

    Cars (MPH) Trucks (MPH)
    55 55

    Other Limited Access Roads

    Cars (MPH) Trucks (MPH)
    65 65
  • Teen and Novice Drivers

    Full Privilege Minimum Age

    17 years

    Learner Stage

    Minimum Age (Years/Months)

    Minimum Duration (Months)

    Required Supervised Driving Hours (Night Hours)

    14 12

    20 (2) during Learner Stage

    10 (2) during Intermediate Stage

    Intermediate Stage

    Minimum Age (Years/Months)

    Nighttime Driving Restriction

    Passenger Restriction (except family, unless noted)

    16 12:30 a.m. - 5 a.m. First 6 months: no more than 1 under 18, parents may waive
  • Work Zones

    Violations Affected

    All moving vehicle violations

    Enhanced Penalties

    Double original fine (up to $1,000)

    Workers Must Be Present?


    Signs Must Be Present?