Case Records

Cover Page Technical Report Technical Summary Acknowledgements List of Tables Introduction Study Sites Observational Study Focus Group Research Conclusions References

Protocol Selection of Subjects Identification of Eligible Subjects Case Records Description of Subjects Subjects' Prior Driving Records Description of Current DWI/OWI Offense License Reinstatement and Subsequent Driving Record Results of Observations Travel During Suspension Period Travel During vs. After Suspension Factors Affecting Driving While Suspended Circumstances of Observed Travel' Case Examples Each subject was assigned a unique case number, and a detailed computer record was created. The record contained information on the characteristics of the offender (for example, date of birth); driver history prior to the DWI/OWI violation (for example, number of moving violations); current DWI/OWI violation and the associated license suspension; and violations, license actions, or crashes occurring after the DWI/OWI arrest. The record for each subject also contained the median annual household income associated with the zip code of the subject's residence based on the 2000 U.S. Census data. The record included information about each observation, including the date and times and whether the subject was observed traveling. If the subject was observed traveling, the following information was coded: method of travel (driving, walking, riding as a passenger) destination of travel, if known if driving, whether there were passengers and, if so, whether adult, child, or both All case records were anonymous and organized around a case number assigned to each subject. Observation reports and driver abstracts were tracked by case number, rather than name or address. Any documents containing the subject's name or any other identifying information were destroyed. No documents with the subject's name or other identifying information were viewed at any time by representatives of NHTSA or local law enforcement agencies.