Douglas j beirness ian r marples
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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


Douglas j beirness ian r marples

The End

Doug Beirness

Canadian Centre on Substance Abuse

Ottawa Canada

Email:

[email protected]

or [email protected]


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