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
2570 24th Street, Mail Station: H-126
Sacramento, CA 95818
(916) 657-5805

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

407 Results

Report ID Date Published Title Section Links
258 2021/ 08

AB 2499: A Traffic Safety Evaluation of California’s Traffic Violator School Masked Conviction Program

By: Michael A. Gebers, Bayliss J. Camp

The negative traffic safety impact of California’s prior traffic violator school (TVS) citation dismissal policy is well documented in past departmental TVS evaluations. Using advanced inferential statistical techniques, the current study evaluated the substantive changes to California’s Traffic Violator School program as required by California Assembly Bill 2499 (Chapter 599, Statutes of 2010). The program changes implemented by AB 2499 appear to be associated with a specific deterrent effect as evidenced by a reliable and statistically significant reduction in subsequent traffic crashes and convictions of those receiving a masked TVS conviction as opposed to a countable conviction. Although the results suggest that this relationship exists primarily among TVS drivers with less elevated prior records, the change in status from a TVS citation dismissal to a TVS masked conviction has reduced the negative traffic safety impact of the TVS citation dismissal policy in effect prior to the implementation of AB 2499. Several recommendations are offered to enhance the positive traffic safety impact of the TVS program by further combining its educational elements with the Department’s post-license control program by way of the Negligent Operator Treatment System.

260 2020/ 06

2019 Annual Report of the California DUI Management Information System

By: Oulad Daoud, Tashima

In this twenty-eighth annual legislatively-mandated report, 2016 and 2017 driving under the influence of alcohol and/or drugs (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, postconviction sanctions, driver license suspension/revocation actions, and on drivers in alcohol- or drug-involved crashes.

s2-description 2020/ 04

Section II Reports – Address the issues of driver standards and testing

119 125 130 136 140 2020/ 04

Annual Tabulations of Mature Driver Program Driving Record Comparisons (1989-1993). Annual Report to the Legislature of the State of California.

By: Lee Stylos, Mary K. Janke, Eric Berube, Robert A. Hagge, Kevin K. Foster

To provide annual tabulations comparing the accident and conviction records of Mature Driver Improvement (MDI) course participants and of a randomly selected group of drivers of similar age (55 and above).

102 110 115 117 128 137 2020/ 04

Negligent-Operator Treatment Evaluation System (NOTES): Program Effectiveness Reports

s3-description 2020/ 04

Section III Reports

Section III reports address various issues including negligent operators, actions under the Driver Improvement Program

NRN024, NRN025, NRN026, NRN027, NRN028, NRN029, NRN030 2020/ 04

Post Licensing Control Reporting and Evaluation System (PLCRES): Negligent Operator Program Costs and Effectiveness

By: Daniel Kadell, William Howe, John Magistad, Ph.D., Raymond C. Peck, William Epperson, Steve Fong, William C. Marsh, David W. Carpenter, Philip Wootton

To implement and maintain an automated on-line evaluation system tor monitoring the effectiveness of negligent-operator programs.

s4-description 2020/ 04

Section IV Reports – Various issues including research into the causes of accidents, the development of improved statistical techniques and research methods, and the maintenance of a driver record file.

s5-description 2020/ 04

Driver Licensing/Control Systems and Safety Management Studies

s6-description 2020/ 04

Studies on Special Driver Populations