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.
Studies & Reports Sections
Studies and reports are assigned to a Section that best describes the type of report. Click on a section title below to see a short description.
I. Driver Education & Training Studies
II. Driver Licensing Screening Studies
III. Studies on Improvement and Control of Deviant Drivers
IV. Basic Research & Methodological Studies: Driver Performance, Accident Etiology, Prediction Models, and Actuarial Applications
V. Driver Licensing / Control Systems & Safety Management Studies
VI. Studies on Special Driver Populations
VII. Miscellaneous Studies & Reports
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
Note Please include the report number, the number of copies requested, and your name, address, and phone number.
| Report ID | Date Published | Title | Section | Links |
|---|---|---|---|---|
| 230 | 2009/ 06 |
Enhanced Negligent Operator Treatment Evaluation System Program Effectiveness Report #1 (Summary Of Findings)The Enhanced Negligent Operator Treatment Evaluation System (ENOTES) provides periodic cost-effectiveness analyses of the California Negligent Operator Treatment System (NOTS). The evaluation system is based on a comparison of the driving records of negligent operators (drivers with multiple traffic conviction and/or crash points) who are randomly assigned to an intervention or to a no-contact delayed treatment comparison group. Three levels of progressively more severe negligent operator interventions were evaluated in this manner; the fourth-level intervention (the most severe) was evaluated indirectly by using data from the Level 3 intervention. Drivers at Levels 1 and 2 were eligible to receive the standard, non-alcohol letter or a letter based on the Transtheoretical Model (TTM) of behavior change. The results found NOTS to be effective in reducing subsequent total crashes and citations of treated drivers. Consistent with prior evaluations of NOTS, the largest effects were found for the probation and probation violator sanctions, and the smallest effects were associated with the Level 1 and 2 letters. Within Levels 1 and 2, the TTM letters were found to be more effective than the standard letters in reducing subsequent traffic crashes and convictions. A cost effectiveness analysis of NOTS provided positive estimates at all four levels. |
III | |
| 30 | 1969/ 08 |
Modifying Negligent Driving Behavior Through Warning LettersTo investigate the relative impact of various types of warning letters on the subsequent driving record of negligent drivers. Levels of threat and intimacy were manipulated. |
III | |
| 36.1 | 1971/ 03 |
An Abstract of Modifying Negligent Driving Behavior: Evaluation of Selected Driver Improvement TechniquesTo compare and evaluate eight different methods of dealing with negligent drivers. |
III | |
| 36.2 | 1971/ 03 |
Estimating Program Costs and Benefits, A Supplement to Modifying Negligent Driving Behavior: Evaluation of Selected Driver Improvement TechniquesTo estimate the program costs and program benefits of eight different methods of dealing with negligent drivers. |
III | |
| 66.1 | 1978/ 04 |
An Abstract of Educational Approaches to Driver Improvement: An Experimental Evaluation with Negligent DriversTo develop a group driver-improvement program that is more effective in reduction of accident/conviction rates and more cost-beneficial than the standard Group Educational Meeting (GEM). |
III | |
| 66 | 1978/ 04 |
Educational Approaches to Driver Improvement: An Experimental Evaluation with Negligent DriversTo develop a group driver-improvement program that is more effective in reduction of accident/conviction rates and more cost-beneficial than the standard Group Educational Meeting (GEM). |
III | |
| 70.1 | 1979/ 07 |
An Abstract of An Evaluation of Probation-by-Mail as an Alternative to Mandatory Hearing Attendance for Negligent OperatorsTo evaluate the feasibility and traffic safety implications of placing negligent operators on probation by letter without the subjects being scheduled for a hearing. |
III | |
| 75.1 | 1980/ 07 |
An Abstract of Suspension and Revocation Effects on the DUI Offender(1) To assess the ability of first, second, and third DUI offenders to avoid future DUI convictions or traffic accidents; (2) to survey drivers being reinstated following a DUI suspension or revocation in order to gather information concerning admission of driving during the action, transportation alternatives used while under the licensing action, and reactions of the driver to both the action and the changes in life style which resulted thereby; and (3) to assess the incidence of driving while under licensing action as reported by drivers themselves, and by the presence of any driver record update. |
III | |
| 75 | 1980/ 07 |
Suspension and Revocation Effects on the DUI Offender(1) To assess the ability of first, second, and third DUI offenders to avoid future DUI convictions or traffic accidents; (2) to survey drivers being reinstated following a DUI suspension or revocation in order to gather information concerning admission of driving during the action, transportation alternatives used while under the licensing action, and reactions of the driver to both the action and the changes in life style which resulted thereby; and (3) to assess the incidence of driving while under licensing action as reported by drivers themselves, and by the presence of any driver record update. |
III | |
| 77 | 1981/ 12 |
An Evaluation of Three Alternative Formats for Probation Violation HearingsTo develop and evaluate new formats hearings which incorporate behavior caseload-scheduling approach. for negligent operator probation violator modificatiol1 principles and a client |
III |