Cost-benefit analysis of an alcohol ignition interlock for installation in all newly registered vehicles

Traffic Injury Prevention
Julie A Lahausse, Brian N Fildes

Abstract

This study conducted a cost-benefit analysis of an alcohol ignition interlock device in preventing alcohol-related fatalities and serious injuries when installed in all newly registered vehicles in Australia. Benefit-cost ratios (BCRs) were calculated by comparing the benefits associated with the number of road injuries the interlock was predicted to save with the costs associated with installing the device in all newly registered vehicles. Four effectiveness levels were assumed for the interlock, given that the device was not expected to prevent 100 percent of alcohol-impaired driving. Unit benefits were computed for 4, 5, and 7 percent discount rates, and for fleet life periods of 15 and 25 years. The BCRs ranged from 3.4:1 at best to 0.6:1, depending on the interlock effectiveness level, the discount rate, and the fleet life figure applied. It was estimated that the interlock could prevent between 97 (at the lowest effectiveness level of 23.8%) and 388 (at the highest effectiveness level of 95%) road fatalities per annum, with the corresponding range for serious injuries being 603 to 2414 casualties. It was recommended that the installation of interlock devices in all newly registered vehicles in Australia could be an effect...Continue Reading

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Citations

Mar 18, 2016·American Journal of Public Health·Elinore J Kaufman, Douglas J Wiebe
Jan 23, 2013·Value in Health : the Journal of the International Society for Pharmacoeconomics and Outcomes Research·Vallop DitsuwanTheo Vos
Mar 20, 2015·American Journal of Public Health·Patrick M CarterJonathan D Rupp
Jan 25, 2012·Accident; Analysis and Prevention·Suzanne PolinderEd F van Beeck
Jan 30, 2014·Traffic Injury Prevention·Igor RadunTimo Lajunen
Jan 10, 2017·American Journal of Preventive Medicine·Emma E McGintyJon S Vernick
Nov 19, 2020·Traffic Injury Prevention·Susan A Ferguson, Natalie A Draisin

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