This study set out to examine whether a more aggressive seat belt reminder would be cost-beneficial for Australia. Benefits were computed for three device options (simple, simple-2 and complex) and three introduction scenarios {driver-only, front seat occupants and all occupants). Four levels of effectiveness were assumed, from 10 percent to 40 percent, depending on the type of device fitted. Unit benefits were computed for 4 percent, 5 percent and 7 percent discount rates, and for fleet life periods of 15 and 25 years. Costs were derived from data provided by industry experts. The findings from this study show that benefit-cost-ratios ranged from 5.1:1 at best (simple device for the driver only) to 0.7:1 (simple device for all passengers) depending on the type of device fitted, its assumed effectiveness, the discount rate, and the fleet life figure applied. It is not clear if a simple device (consistent flashing light and warning tone) would suffice given the high level of seat belt wearing rates that currently exist in Australia, and hence a more aggressive unit that embarrasses non-wearers may be required. (Author/publisher)
Abstract