Research Studies & Reports

DMV’s Research & Development Branch has been conducting research and producing studies and reports since the 1950s. Research & Development reports help DMV to measure the impact of new laws on making drivers safer. We also identify areas where we can improve our processes, explore new approaches to solving existing problems, and branch out into new opportunities to serve you better. 

Request printed copies of studies and reports by mail at:

Department of Motor Vehicles
Research and Development Branch
2415 1st Ave. Mail Station: F-126
Sacramento, CA 95818
(916) 914-8125

Please include the report number, the number of copies requested, and your name, address, and phone number.

393 Results

Report ID Date Published Title Section Links
191 2002/ 01

2002 ANNUAL REPORT OF THE CALIFORNIA DUI MANAGEMENT INFORMATION SYSTEM

By: Helen N. Tashima and Clifford J. Helander

In this eleventh annual legislatively mandated report, 1999 and 2000 DUI data from diverse sources were compiled and cross-referenced for the purpose of developing a single comprehensive DUI data reference and monitoring system. This report presents crosstabulated information on DUI arrests, convictions, court sanctions, administrative actions and alcoholinvolved accidents. In addition, this report provides an evaluation of the effectiveness of alternative court and administrative sanctions (including alcohol treatment programs and license actions) upon the 1-year postconviction records of first and second DUI offenders over a time period of ten years. The postconviction driving records of second DUI offenders arrested in 1997 and 1999 were evaluated for 3- and 1-year periods, respectively. An additional analysis was conducted on the effectiveness of alcohol education programs upon the 1-year post conviction records of those convicted of the reduced charge of alcohol-related reckless driving.

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198 2003/ 01

2003 ANNUAL REPORT OF THE CALIFORNIA DUI MANAGEMENT INFORMATION SYSTEM

By: Helen N. Tashima and Clifford J. Helander

In this twelfth annual legislatively mandated report, 2000 and 2001 DUI data from diverse sources were compiled and cross-referenced for the purpose of developing a single comprehensive DUI data reference and monitoring system. This report presents crosstabulated information on DUI arrests, convictions, court sanctions, administrative actions and alcoholinvolved accidents. In addition, this report provides an evaluation of the effectiveness of alternative court and administrative sanctions (including alcohol treatment programs and license actions) upon the 1-year postconviction records of first and second DUI offenders over a time period of eleven years. The postconviction driving records of second DUI offenders arrested in 1998 and 2000 were evaluated for 3- and 1-year periods, respectively. Additional analyses were conducted on the effectiveness of alcohol education programs upon the 1-year post conviction records of those convicted of the reduced charge of alcohol-related reckless driving, and on the effectiveness of the 3-month versus 6-month alcohol education programs on the 1-year post conviction records of first offenders.

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206 2004/ 01

2004 ANNUAL REPORT OF THE CALIFORNIA DUI MANAGEMENT INFORMATION SYSTEM

By: Helen N. Tashima and Clifford J. Helander

In this thirteenth annual legislatively mandated report, 2001 and 2002 DUI data from diverse sources were compiled and cross-referenced for the purpose of developing a single comprehensive DUI data reference and monitoring system. This report presents crosstabulated information on DUI arrests, convictions, court sanctions, administrative actions and alcoholinvolved accidents. In addition, this report provides 1-year proportions of DUI recidivism and accident rates for first and second DUI offenders arrested in each year over a time period of twelve years. Also, the long-term recidivism curves of the cumulative proportions of DUI reoffenses are shown for all DUI offenders arrested in 1994. Analyses were conducted on the effectiveness of alcohol education programs upon the 1-year postconviction records of those convicted of the reduced charge of alcohol-related reckless driving, and on the effectiveness of the 3-month versus 6-month alcohol education programs on the 1-year postconviction records of first offenders.

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211 2005/ 01

2005 ANNUAL REPORT OF THE CALIFORNIA DUI MANAGEMENT INFORMATION SYSTEM

By: Helen N. Tashima and Clifford J. Helander

In this fourteenth annual legislatively mandated report, 2002 and 2003 DUI data from diverse sources were compiled and cross-referenced for the purpose of developing a single comprehensive DUI data reference and monitoring system. This report presents crosstabulated information on DUI arrests, convictions, court sanctions, administrative actions and alcoholinvolved accidents. In addition, this report provides 1-year proportions of DUI recidivism and accident rates for first and second DUI offenders arrested in each year over a time period of thirteen years. Also, the long-term recidivism curves of the cumulative proportions of DUI reoffenses are shown for all DUI offenders arrested in 1994. Analyses were conducted on the effectiveness of alcohol education programs upon the 1-year postconviction records of those convicted of the reduced charge of alcohol-related reckless driving, and on the effectiveness of the 3-month versus 6-month alcohol education programs on the 1-year postconviction records of first offenders. The proportions of 2002 convicted first and second offenders who completed their alcohol education/treatment program requirement are also presented.

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220 2006/ 01

2006 ANNUAL REPORT OF THE CALIFORNIA DUI MANAGEMENT INFORMATION SYSTEM

By: Helen N. Tashima and Sladjana Oulad Daoud

In this fifteenth annual legislatively mandated report, 2003 and 2004 DUI data from diverse sources were compiled and cross-referenced for the purpose of developing a single comprehensive DUI data reference and monitoring system. This report presents crosstabulated information on DUI arrests, convictions, court sanctions, administrative actions and alcohol-involved crashes. In addition, this report provides 1-year proportions of DUI recidivism and crash rates for first and second DUI offenders arrested in each year over a time period of fourteen years. Also, the long- term recidivism curves of the cumulative proportions of DUI reoffenses are shown for all DUI offenders arrested in 1994. Analyses were conducted on the effectiveness of alcohol education programs upon the 1-year postconviction records of those convicted of the reduced charge of alcohol-related reckless driving, and on the effectiveness of the 3-month versus 6-month alcohol education programs on the 1-year postconviction records of first offenders. Two additional subanalyses were conducted to determine if differences on the outcome measures were related to BAC level (below .20 and .20 and above). The proportions of 2003 convicted first and second offenders who completed their alcohol education/treatment program requirement are also presented.

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222 2007/ 01

2007 ANNUAL REPORT OF THE CALIFORNIA DUI MANAGEMENT INFORMATION SYSTEM

By: Helen N. Tashima and Sladjana Oulad Daoud

In this sixteenth annual legislatively-mandated report, 2004 and 2005 DUI data from diverse sources were compiled and cross-referenced for the purpose of developing a single comprehensive DUI data reference and monitoring system. This report presents crosstabulated information on DUI arrests, convictions, court sanctions, administrative actions and alcohol-involved crashes. In addition, this report provides 1-year proportions of DUI recidivism and crash rates for first and second DUI offenders arrested in each year over a time period of fifteen years. Also, the long-term recidivism curves of the cumulative proportions of DUI reoffenses are shown for all DUI offenders arrested in 1994. Analyses were conducted on the effectiveness of alcohol education programs upon the 1-year postconviction records of those convicted of the reduced charge of alcohol-related reckless driving, and on the effectiveness of the 3-month versus 6-month alcohol education programs on the 1-year postconviction records of first offenders. Two additional subanalyses were conducted to determine if differences on the outcome measures were related to BAC level (below .20 and .20 and above). The proportions of 2004 convicted first and second offenders who completed their alcohol education/treatment program requirement are also presented.

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224 2008/ 01

2008 ANNUAL REPORT OF THE CALIFORNIA DUI MANAGEMENT INFORMATION SYSTEM

By: Helen N. Tashima and Sladjana Oulad Daoud

In this seventeenth annual legislatively-mandated report, 2005 and 2006 DUI data from diverse sources were compiled and cross-referenced for the purpose of developing a single comprehensive DUI data reference and monitoring system. This report presents cross tabulated information on DUI arrests, convictions, court sanctions, administrative actions and alcohol-involved crashes. In addition, this report provides 1-year proportions of DUI recidivism and crash rates for first and second DUI offenders arrested in each year over a time period of sixteen years. Also, the longterm recidivism curves of the cumulative proportions of DUI reoffenses are shown for all DUI offenders arrested in 1994. Analyses were conducted on the effectiveness of alcohol education programs upon the 1-year postconviction records of those convicted of the reduced charge of alcohol-related reckless driving, and on the effectiveness of the 3-month versus 6-month alcohol education programs on the 1-year postconviction records of first offenders. Two additional subanalyses were conducted to determine if differences on the outcome measures were related to BAC level (below 0.20% and 0.20% and above). The proportions of 2005 convicted first and second offenders who were referred to alcohol education/treatment programs are also presented.

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228 2009/ 01

2009 ANNUAL REPORT OF THE CALIFORNIA DUI MANAGEMENT INFORMATION SYSTEM

By: Sladjana Oulad Daoud and Helen N. Tashima

In this eighteenth annual legislatively-mandated report, 2006 and 2007 DUI data from diverse sources were compiled and cross-referenced for the purpose of developing a single comprehensive DUI data reference and monitoring system. This report presents crosstabulated information on DUI arrests, convictions, court sanctions, administrative actions and alcohol-involved crashes. In addition, this report provides 1-year proportions of DUI recidivism and crash rates for first and second DUI offenders arrested in each year over a time period of seventeen years. Also, the longterm recidivism curves of the cumulative proportions of DUI reoffenses are shown for all DUI offenders arrested in 1994. Analyses were conducted on the effectiveness of DUI programs on the 1-year postconviction records of those convicted of the reduced charge of alcohol-related reckless driving, and on the effectiveness of the 3-month versus 9-month DUI programs on the 1-year postconviction records of first offenders. Two additional subanalyses were conducted to determine if differences in the outcome measures were related to BAC level (below 0.20% and 0.20% and above). The proportions of 2006 convicted first and second offenders who were referred, enrolled, and completed DUI programs are also presented.

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231 2010/ 01

2010 ANNUAL REPORT OF THE CALIFORNIA DUI MANAGEMENT INFORMATION SYSTEM

By: Sladjana Oulad Daoud and Helen N. Tashima

In this nineteenth annual legislatively-mandated report, 2007 and 2008 DUI data from diverse sources were compiled and cross-referenced for the purpose of developing a single comprehensive DUI data reference and monitoring system. This report presents crosstabulated information on DUI arrests, convictions, court sanctions, administrative actions and alcohol-involved crashes. In addition, this report provides 1-year proportions of DUI recidivism and crash rates for first and second DUI offenders arrested in each year over a time period of 18 years. Also, the long-term recidivism curves of the cumulative proportions of DUI reoffenses are shown for all DUI offenders arrested in 1994. Analyses were conducted on the effectiveness of DUI programs in reducing 1-year subsequent violations and crashes of those convicted of the reduced charge of alcohol-related reckless driving, and on the effectiveness of the 3-month versus 9-month DUI programs for first offenders. Two additional subanalyses were conducted to determine if differences in the outcome measures were related to BAC level (below 0.20% and 0.20% and above). The proportions of 2007 convicted first and second offenders who were referred, enrolled, and completed DUI programs are also presented.

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233 2011/ 01

2011 ANNUAL REPORT OF THE CALIFORNIA DUI MANAGEMENT INFORMATION SYSTEM

By: Sladjana Oulad Daoud and Helen N. Tashima

In this twentieth annual legislatively-mandated report, 2008 and 2009 DUI data from diverse sources were compiled and cross-referenced for the purpose of developing a single comprehensive DUI data reference and monitoring system. This report presents crosstabulated information on DUI arrests, convictions, court sanctions, administrative actions and alcohol-involved crashes. In addition, this report provides 1-year proportions of DUI recidivism and crash rates for first and second DUI offenders arrested in each year over a time period of 19 years. Also, the long-term recidivism curves of the cumulative proportions of DUI reoffenses are shown for all DUI offenders arrested in 1994. Two analyses were conducted to evaluate if referrals to DUI programs were associated with reductions in 1-year subsequent violations and crashes among those convicted of the reduced charge of alcohol-related reckless driving, and if referrals to the 9-month DUI program were associated with reductions in 1-year subsequent violations and crashes when compared to referrals to the 3-month DUI program among first DUI offenders. The proportions of 2008 convicted first and second offenders who were referred, enrolled, and completed DUI programs are also presented.

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