Mandatory alcohol testing programs for truck and bus drivers have contributed to a significant reduction in alcohol involvement in fatal crashes, according to a new study by researchers at the US Mailman School of Public Health and the Johns Hopkins Bloomberg School of Public Health.
Based on a study sample of nearly 70,000 heavy truck and bus drivers and over 83,000 car drivers, the estimated net effect attributed to the mandatory alcohol testing programs for drivers of heavy trucks and buses was a 23% reduced risk of alcohol involvement in fatal crashes.
This is the first study to comprehensively evaluate the Omnibus Transportation Employee Testing Act of 1991, which made alcohol testing mandatory for transportation employees with safety sensitive functions. Findings from the study are published online in the American Journal of Epidemiology.
In the U.S., there are approximately 4,000 fatal crashes involving heavy trucks and buses each year, and nearly 80% of these fatal crashes are collisions between a motor carrier and a passenger car. About 3% of the motor carrier drivers and 27% of car drivers in these fatal crashes are under the influence of alcohol.
“The mandatory alcohol testing programs for transportation employees with safety-sensitive functions are a major policy intervention,” says Guohua Li, senior author of the report. “However, this policy remains a controversial one, because of legal and ethical concerns and little empirical data about its safety benefit. Our study provides compelling evidence that implementation of the mandatory alcohol testing programs has significantly reduced alcohol involvement in fatal motor carrier crashes.”
The authors also report that the estimated safety benefit of the mandatory alcohol testing programs is consistent across age groups and between sexes. Moreover, implementation of these programs has reduced alcohol involvement by motor carrier drivers in daytime and night time fatal crashes to a similar degree.
Free cross-border trade by motor carriers is a major component of the North America Free Trade Agreement but has been hindered by issues around safety. One of the differences in regulations is mandatory drug and alcohol testing, which is required of drivers in the U.S. but not in Canada and Mexico. According to Mailman School of Public Health’s Joanne Brady, “results from this new study suggest that implementation of the mandatory alcohol testing programs in the U.S. has substantially reduced alcohol-impaired driving by motor carrier drivers.”
More at the; Mailman School of Public Health
- See also;
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