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.

Report ID Title Section Links

Standardization of Production Rates for Comparing Field Offices

By: Dan Kadell

To develop practical examples of standardization techniques for use in DMV field offices and headquarters units.


Determining Sample Size

By: Mary K. Janke

This paper was meant to introduce people unfamiliar with sampling theory and practice to some basic information needed in order to make a valid inference from a sample to a population.


Prediction of Field Office Telephone Staffing Levels

By: Anthony DeMaio

To develop a regression model for staffing telephone operations in DMV field offices.


Driving Simulator Review

By: Leonard A. Marowitz

To review and evaluate the technology, costs, and _unresolved issues of contention related to driving simulators; to reach conclusions, based on research studies, about the validity of using driving simulators.


Accidents, Mileage, and the Exaggeration of Risk

By: Mary K. Janke

To correct a common misinterpretation of the accidents-per-mile measure. The assumption that accidents should be proportional to miles driven is shown to be invalid and to exaggerate the accident risk of lowmileage groups.


(NRN105) Nomograms for Power, Sample Size and Effect Size for Statistical Tests

By: Leonard A. Marowitz

To develop a reference which can be used to quickly determine the statistical power of a variety of widely used statistical tests.


Research Notes (Newsletter), April 1972 – March 2003- abstract (PDF)

By: California DMV, Research and Development Branch

To communicate the activities and research findings of the Research and Development Section and others to management and operational personnel.