Driving while intoxicated (DWI) is a preventable source of morbidity and mortality in the United States. The Ignition Interlock Device (IID) requires a driver to blow into a breathalyzer installed in a vehicle to establish sobriety and reduces drunk driving while installed. IIDs have become widespread. Most U.S. states require DWI offenders to install IIDs in their cars. However, once IIDs are removed, DWI recidivism levels return to those similar to offenders who had no IID installed.

Klein Buendel Senior Scientist, Dr. W. Gill Woodall, presented DWI intervention study results at the 47th Annual Research Society on Alcoholism Scientific Meeting on June 22-26 in Minneapolis, Minnesota. The purpose of this study was to develop and test an app (“B-SMART”) for DWI offenders and their Concerned Family Members (CFMs) to extend non-intoxicated driving beyond the IID installation period.

The B-SMART app has four modules: 1) Life with the Interlock – orientation to IIDs, 2) processes to support changes in drinking, 3) effective communication skills, and 4) family activities that don’t involve alcohol. Participants (pairs of DWI Offenders and CFMs N=76) were randomly assigned to receive the B-SMART web app (n=30) or access to an IID New Mexico Department of Transportation information page [Usual and Customary (UC) condition, n=46]. Data on failed IID tests and IID lockout events were obtained from Ignition Interlock providers and were the primary outcome variables.

IID data were collected at the end of the project period on 58% (n=71) of 123 participants, with one IID provider not providing IID data due to corporate policy restrictions. Two summary outcome variables were created: 1) the frequency of any failed test during IID installation period, and 2) IID lockout events, which occur when a driver repeatedly fails the breathalyzer test in a set time period. The mean number of failed IID tests was not significantly different for UC participants (n=45) than versus B-SMART participants (n=26). For lockout events, UC participants had significantly more lockout events than B-SMART participants.

Results indicate the B-SMART app reduced IID Lockout events, which is an important outcome as lower IID events predict reduced DWI recidivism. 

This research was supported by a grant from the National Institute on Alcohol Abuse and Alcoholism (AA022850; Dr. W. Gill Woodall, Principal Investigator). Collaborators on this conference presentation included Dr. Barbara McCrady and Dr. Vern Westerberg from the University of New Mexico; and Ms. Julia Berteletti, Ms. Marita Brooks, and Ms. Lila Martinez from Klein Buendel. The B-SMART app was developed by the Creative Team at Klein Buendel.