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Commercial Interlocks: A Canadian Trial. Douglas J. Beirness Ian R. Marples. Overview. Rationale of Commercial Interlock Programs History A Canadian Trial Findings The way forward. Rationale. Unlike offender programs, commercial programs not based on history of DWI

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douglas j beirness ian r marples

Commercial Interlocks:

A Canadian Trial

Douglas J. Beirness

Ian R. Marples

overview
Overview
  • Rationale of Commercial Interlock Programs
  • History
  • A Canadian Trial
  • Findings
  • The way forward
rationale
Rationale
  • Unlike offender programs, commercial programs not based on history of DWI
  • Part of a risk management strategy
  • Commitment to safety
  • Strategic differentiation in the marketplace
a brief history
A Brief History
  • Sweden has had a voluntary interlock program for commercial operators
  • New regulations will require interlocks in cars and light truck used for commercial purposes
  • Proposal to require interlocks on all buses and trucks by 2010
a brief history1
A Brief History
  • Major EU research project involving commercial interlocks
  • Trucks in Germany
  • Buses in Spain and Norway
  • No major commercial interlock deployments in North America but interest is growing
canadian approach
Canadian Approach
  • Looking to add a North American dimension and demonstrate feasibility and efficacy of commercial interlock programs
  • Borrowed from the EU design
  • Qualitative field trial, focusing on reported impact in comparison with data logger records
the pioneers
The “Pioneers”
  • Requirement for a small, manageable commercial fleet
  • Fleet of vans delivering auto glass and electronics
  • Two regions of Ontario
the pioneers1
The “Pioneers”
  • 12 drivers had interlocks installed in company van for 12-month period
  • Over time, some were added, others left
  • Fortuitously, similar company acquired and were recruited for control group
agreement
Agreement
  • Guaranteed anonymity
  • If FAIL, may be negative consequences
  • Employer gave assurance participants would not be subject to disciplinary action based solely on breath test results
the interlock device
The Interlock device
  • ACS V3 -- first interlock designed specifically for commercial fleets
  • Drivers had own hand set
  • Replaced after month 1 and 6
characteristics
Characteristics
  • All male
  • 25 – 44 years old
  • Most married
  • High school graduates (35% had at least some college)
  • Household income $50K
drinking patterns
Drinking Patterns
  • Drink on 2 days per week
  • 5.4 drinks per occasion*
  • Mean AUDIT score 6.7
  • Half of Interlock group had AUDIT score of 8 or greater
  • 33% drove within 2 hours of drinking in past month
  • 11% drove after drinking “too much” in past year
perceptions of interlocks
Perceptions of Interlocks
  • Initially:
    • Believed would have no trouble using it
    • Unlikely to consider one for personal use
    • Interlock would not change drinking habits
    • Would contribute to traffic safety
    • Thought would become a habit like seat belts
    • Agreed that customers might think they had a drinking problem
perceptions of interlocks1
Perceptions of Interlocks
  • After:
    • Believed would have no trouble using it
    • Less likely to consider one for personal use
    • More certain would not change drinking habits
    • More thought it would be easy to circumvent
    • Less likely to think it would become a habit like using seat belts
    • Greater agreement that customers would think they had a drinking problem
interlock recorder
Interlock Recorder
  • Very few lockouts
  • Most were after hours and appear to be result of “testing the device”
  • One case, several instances of low BAC first thing in morning
  • Drink with lunch – one lockout at BAC=.024
conclusions
Conclusions…
  • Commercial programs differ from offender programs – e.g., no need for running retests
  • Make it easy to participate -- minimize the obstacles
  • Establish clear policies with management and workers pertaining to confidentiality, disciplinary action, rehabilitation
  • Focus on the commitment to safety, risk management, and prevention
the way forward
The Way Forward
  • Commercial interlock programs in North America in hazardous material transport, remote operators, passenger transport
  • Unions must be brought on board
slide18

The End

Doug Beirness

Canadian Centre on Substance Abuse

Ottawa Canada

Email:

[email protected]

or [email protected]

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