Bill to Expand Ignition Interlock Program for DUIs Statewide Signed by Governor

September 28, 2016

Governor Signs Bill to Expand Ignition Interlock Program for DUIs Statewide

Senator Hill, MADD Hail New Law to Combat Drunk Driving

SACRAMENTO – Governor Jerry Brown today signed into law Senator Jerry Hill’s legislation to extend and expand statewide a pilot program that requires drunk driving offenders to use ignition interlocks – devices that prevent cars from starting if their drivers are not sober.

“SB 1046 will lead to safer roadways for all Californians,” said Hill, D-San Mateo and Santa Clara Counties. “We’ve already seen this to be true in the four counties conducting the pilot program: Ignition interlock devices (IIDs) have saved lives by preventing more than 1 million attempts to drink and drive since 2010.”

“Today’s signing would not have been possible without the volunteers and families of Mothers Against Drunk Driving who have worked with me on IID legislation for the past four years,” Hill added, “especially parents like Mary and Tom Klotzbach who have been at the forefront of these tireless efforts in memory of their son, Matthew.”

The Klotzbachs were riding home from a family dinner when a drunk driving on a suspended license slammed into their car, killing 22-year-old Matthew in 2001.

“No parent should have to lose their child to the criminal negligence of a drunk driver – especially when technology exists to prevent such a tragedy,” said Mary Klotzbach, a member of MADD’s national board. “IIDs are an effective weapon against drinking and driving. Today I want to thank Governor Brown, Senator Jerry Hill and the California Legislature for taking a positive step toward addressing California’s drunk driving problem by making all California roadways safer and moving the pendulum toward #nomorevictims.”

“MADD is so grateful to Senator Hill, Governor Brown and the entire California Legislature for recognizing that ignition interlocks save lives,” said MADD National President Colleen Sheehey-Church. “All too often, drunk driving offenders ignore license suspensions and drive anyway. All drunk driving offenders should be required to blow into an ignition interlock to prove they are sober before starting their vehicles.”

About 1,000 people die and more than 20,000 are injured each year in California because of drunk drivers.

Under the IID pilot program now in place Alameda, Los Angeles, Sacramento and Tulare counties, individuals convicted of driving under the influence are required to install and maintain an ignition interlock device.

The new law enables the pilot program to run for another two years. Then, starting January 1, 2019, the pilot expands statewide with minor modifications so that with:

  • A first DUI offense that also involves an injury, an IID would be required for six months
  • A first DUI offense that involves no injuries, an offender may choose a six-month IID requirement with full driving privileges, or a one-year restricted license that would allow only driving to and from work if the offender also participates in a treatment program
  • A second DUI offense, an IID would be required for one year
  • A third DUI offense, the IID requirement is two years
  • A fourth or subsequent DUI offense, the IID requirement is three years

The statewide pilot includes an incentive to DUI offenders who choose to install an IID soon after their arrest: They are allowed full driving privileges with installation and use of an IID, and their ultimate IID time requirement is to be reduced based on their early installation of the device prior to conviction.

An IID costs less than $3 a day – approximately $60 to $80 – per month for monitoring and calibration. It costs $70 to $150 for installation. The new law contains provisions to help low-income offenders, who would pay 10 percent, 25 percent or 50 percent of the IID costs depending on income. The IID provider would pay the rest.

The new law also requires the California Transportation Agency to conduct a study of the statewide pilot program and submit a report to the Legislature by January 1, 2025. The expanded pilot program sunsets on January 1, 2026, unless the Legislature extends or modifies it.

A DMV report issued in June found that for:

  • First offenders: IIDs are 74 percent more effective than license suspension in preventing repeat offenses
  • Second offenders: IIDs are 70 percent more effective than license suspension in preventing repeat offenses
  • Third and subsequent offenders: Pilot program IID drivers have a significantly lower odds or hazards of a subsequent DUI conviction and DUI incidents

With the governor’s signature on SB 1046, California joins more than two dozen states with strong IID laws on the books, though California’s law is not identical to the other measures. Twenty-eight other states and the District of Columbia require IIDs for all DUI offenders.



Fact Sheet for Senate Bill 1046:

Senator Hill’s Letter to Governor Brown

MADD’s Letter to Governor Brown

MADD Study on Effectiveness of California Ignition Interlock Devices

DMV Report, “Specific Deterrent Evaluation of Ignition Interlock Pilot Program in California


Leslie Guevarra for Senator Hill, 415-298-3404 cell or

Becky Iannotta for MADD, 202-600-2032 or