Is an alcohol ignition interlock programme(AIIP) a useful tool for changing the alcohol and driving habits of drink-drivers? - PowerPoint PPT Presentation

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Is an alcohol ignition interlock programme(AIIP) a useful tool for changing the alcohol and driving habits of drink-drivers?

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Is an alcohol ignition interlock programme(AIIP) a useful tool for changing the alcohol and driving habits of drink-drivers? Bo Bjerre Associate Professor, Swedish ... – PowerPoint PPT presentation

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Title: Is an alcohol ignition interlock programme(AIIP) a useful tool for changing the alcohol and driving habits of drink-drivers?


1
Is an alcohol ignition interlock programme(AIIP)
a useful tool for changing the alcohol and
driving habits of drink-drivers?
  • Bo BjerreAssociate Professor, Swedish Road
    Administration, Borlänge, Sweden
  • Ulf Thorsson
  • Statistics Sweden, Stockholm, Sweden    

2
Questions and objectives
  • Does participation in an AIIP result in lasting
    treatment effects?
  • The effect of a two-year AIIP is compared to
    conventional licence revocation

3
Conclusions
  • Yes, an AIIP seems to be a useful tool for
    changing the alcohol and driving habits of
    drink-drivers
  • A successfully completed two-year AIIP produces
    lasting effects
  • A 60 reduction in drink-driving recidivism
  • Approximately an 80 reduction in the number of
    police-reported traffic accidents compared to the
    situation during the pre-treatment period.

4
The design of the AIIP
  • Interlock device checked bimonthly
  • Every third month compulsory medical examination
    biological markers, toxicological urine analysis,
    AUDIT
  • From the 5th examination (12 months in the
    program) biological markers must verify sober
    living
  • Expensive The full cost borne by the offender
    (about 5 500 )

5
The design..
  • If passing the 2-year program
  • - reissued full driving licence
  • - regarded as rehabilitated from alcohol abuse or
    dependency (from a traffic safety point of view)

6
Conventional licence revocation
  • Those not participating in the AIIP (controls)
    regain their licence after 12-24 months of
    revocation and
  • An approved doctors certificate including
  • At least 2 normal series of alcohol markers
    during 3-6 months and
  • Passing a new driving test

7
Method
  • The AIIP group1.266 persons between the ages of
    24 and 65. 11 of the drink-drivers elected to
    participate. 10 of the participants are women.
  • Control group K1 DWI offenders (454 persons) in
    other counties that had answered they would have
    applied for an AIIP had they been given the
    opportunity
  • Control group K2 DWI offenders (8.094 persons)
    who chose not to participate in the AIIP

8
Treatment effects are measured through
  • Self-assessed alcohol habits (AUDIT)
  • The individuals ability to retake a driving
    licence
  • The frequency of DWI offences
  • The number of police-reported traffic accidents
  • Sick leave records

9
Percentage of participants remaining on the AIIP
each month during the two-year trial period
10
Reasons for exclusion from the AIIP
  • A total of 48 of the original participants drop
    out
  • Of these 45 are excluded due to repeated
    attempts to start a vehicle with alcohol in their
    breath
  • Another 38 are excluded as they have been unable
    to verify sobriety during the second trial year
  • The remaining 17 of the drop-out are due to
    voluntary exclusion

11
How many people have regained their drivers
licence 2 and 3 years respectively after the DWI
offence
12
Alcohol habits according to AUDIT, among those
who have regained their licence
13
DWI recidivismamong those who have regained
their licence
14
Police-reported traffic accidents involving
human injury,among those who have regained their
licence
15
Number of days of sick leave, among those who
have regained their licence
16
Summary
  • Completion of an AIIP has favourable effects
    compared to conventional licence revocation and
    is a more useful tool for attaining lasting
    changes in the alcohol and driving habits of DWI
    offenders
  • A mandatory AIIP is now suggested for all Swedish
    DWI offenders
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