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
68.1 1978/ 12

Executive Summary of An Evaluation of Alcohol Abuse Treatment as an Alternative to Drivers License Suspension or Revocation (Final Report to the Legislature in Accord with Senate Bill (SB) 38-Gregorio)

III
68 1978/ 12

An Evaluation of Alcohol Abuse Treatment as an Alternative to Drivers License Suspension or Revocation (Final Report to the Legislature in Accord with Senate Bill (SB) 38-Gregorio)

By: Roger E. Hagen, Rickey L. Williams, Edward J. McConnell, & Charles W. Fleming

To assess the traffic safety impact of using the alcohol abuse treatment strategy as an alternative to license suspension or revocation; to assess the impact of treatment program participation or license suspension/ revocation on a driver's life style; to develop guidelines or recommendations concerning the structure of a first-offender program based upon the results of the SB 330 evaluation and knowledge of the state-of-the-art; and to provide guidelines or recommendations concerning future program or evaluation needs.

III
62.2 1978/ 12

An Evaluation of the California Drive Test in Theme and Variation. Volume II: Final Report

By: Michael Ratz

To determine if a longer, more "comprehensive" drive test, or the standard drive test with parallel parking and a higher fail rate, would improve the subsequent driving records of previously unlicensed applicants.

II
65 1978/ 12

The Effects of Adding Safe Driving Content to Written Law Tests Administered to Original Drivers License Applicants

By: David Carpenter

A group of original California driver license applicants, composed of experienced (out-of-state) drivers and inexperienced (first-time) applicants, were administered new, expanded written licensing tests. Questions testing Vehicle Code knowledge and knowledge of non-codified safe driving principles were included in order to evaluate possible differential effects on subsequent driving record. The tests were also administered using different passing scores.

II
64.1 1978/ 11

An Abstract of The Effects of a Traffic Safety Film or a Drive Test with Counseling Session for Renewal Drivers Licensing Applicants with Poor Prior Records

By: Michael Ratz

To determine if an expanded "safe driving" written knowledge test and a drive test with counseling or traffic safety film would improve the records of renewal applicants with poor three-year prior records.

II
64 1978/ 11

The Effects of a Traffic Safety Film or a Drive Test with Counseling Session for Renewal Drivers Licensing Applicants with Poor Prior Records

By: Michael Ratz

To determine if an expanded "safe driving" written knowledge test and a drive test with counseling or traffic safety film would improve the records of renewal applicants with poor three-year prior records.

II
48.2 1978/ 10

Projected Motor Vehicle Registration & Drivers Licenses Outstanding 1978-2005

By: Department Staff

To prepare a set of estimated vehicle registrations to 2005, by county, for each of the four classes of vehicles --passenger vehicles, commercial vehicles, motorcycles, and trailers.

VII
67.1 1978/ 09

Executive Summary of Medically Impaired Drivers: An Evaluation of California Policy (Senate Bill 2033 – Garcia)

By: Mary K. Janke, Raymond C. Peck, & Dell R. Dreyer

To evaluate the Department's licensing policies and practices relative to drivers with mental or physical conditions which might affect their ability to drive safely.

VI
67 1978/ 09

Medically Impaired Drivers: An Evaluation of California Policy (Senate Bill 2033 – Garcia)

By: Mary K. Janke, Raymond C. Peck, & Dell R. Dreyer

To evaluate the Department's licensing policies and practices relative to drivers with mental or physical conditions which might affect their ability to drive safely.

VI
62.1 1978/ 08

An Evaluation of the California Drive Test in Theme and Variation. Volume I: Treatment Development and Preliminary Evaluation

By: Michael Ratz

To develop two modifications of the standard California drive test--the first to make the test more difficult, the second to make the test more comprehensive and more difficult. In addition, the relationships between scores on the standard and new, more comprehensive, test and biographical and driver record data were to be obtained.

II