Study indicates widespread drug abuse in trucking industry
A study looking at drug abuse in the trucking industry resulted a hair test failure rate of 14.2 times greater than urine test rates, leading to the conclusion that drug abuse among drivers is a significant issue.
The University of Central Arkansas study paired the results from a survey of 151,662 truck drivers' paired urine and hair drug screenings. Based on the results of the study, it was determined that 310,250 truck drivers would fail a hair test for illicit drugs and opioids use.
Test results showed a significant discrepancy between drivers failing a urinalysis (949, or 0.6 percent) and those prospective drivers who either failed or refused to submit a hair test (12,824, or 8.5 percent).
The study stemmed from a Trucking Alliance survey of 15 trucking companies that utilize a pre-employment hair test when hiring commercial truck drivers, along with the federally required urine test.
The most widely detected drugs were (in order) cocaine, opioids (including heroin), and marijuana. Positive tests for all these drugs automatically disqualify drivers with commercial driver's licenses from operating a commercial truck.
Among the conclusions from the study:
- 1. The sample size was large enough to draw inferences to the national driver population, with a 99 percent confidence level and a margin of error of less than 1 percent;
- 2. The sample is representative of the national truck driver population; and
- 3. The urine vs. hair tests can be generalized across the national driver population.