General Deterrent Evaluation of the Ignition Interlock Pilot Program in California

This study presents a general deterrence evaluation of an ignition interlock pilot program for the counties of Alameda, Los Angeles, Sacramento, and Tulare, California. The program requires convicted first and repeat DUI offenders to install an ignition interlock device (IID) on all vehicles they own or operate for a pre-specified time period in order to obtain a restricted, reissued, or reinstated driver's license. DUI conviction data indicate that the IID installation rates among all DUI offenders increased dramatically in the pilot counties from 2.1% to 42.4% during the pilot period. The results of the Auto-Regressive Integrated Moving Average (ARIMA) analyses show that the IID pilot program was not associated with a reduction in the number of first-time and repeat DUI convictions in the pilot counties. In other words, no evidence was found that the pilot program has a general deterrence effect. A follow-up study is being conducted to determine if the pilot program has any specific deterrence effects. It is recommended that any subsequent legislative action on this subject take into consideration the findings of this specific deterrence evaluation.

• Record URL:
  http://www.dmv.ca.gov/portal/wcm/connect/065e8803-83ed-4d16-9335-c67e7e23c6ea/S5-247.pdf?MOD=AJPERES&CONVERT_TO=url&CACHEID=065e8803-83ed-4d16-9335-c67e7e23c6ea
• Record URL:
  https://merritt.cdlib.org/d/ark%3A%2F13030%2Fm5hx2t1g/1/producer%2F904564662.pdf
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/904564662
• Corporate Authors:

  California Department of Motor Vehicles

  Research and Development Branch
  P.O. Box 932382
  Sacramento, CA  United States  94232-3820
• Authors:
  • Chapman, Eric A
  • Daoud, Sladjana Oulad
  • Masten, Scott V
• Publication Date: 2015-1

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; References; Tables;
• Pagination: 80p

Subject/Index Terms

• TRT Terms: Alcohol ignition interlock devices; Drunk drivers; Evaluation
• Uncontrolled Terms: Deterrence
• Geographic Terms: California
• Subject Areas: Highways; Safety and Human Factors; I80: Accident Studies;

Filing Info

• Accession Number: 01561640
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Report/Paper Numbers: CAL-DMV-RSS-14-247
• Files: BTRIS, TRIS
• Created Date: Apr 27 2015 9:54AM